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Engine Block Heater: The Ultimate Guide

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Basic Knowledge of . Heater

In the grip of winter’s chill, the frustrating ordeal of a diesel engine refusing to start can test any driver’s patience. Cold mornings often mean standing idle, waiting for the engine to warm up enough to turn over. However, there’s a straightforward solution to bypass this inconvenience—an engine block heater. Installed either in front of or beneath the coolant flow path, this device swiftly warms up the engine’s interior, ensuring no more delays with your vehicle, a beloved companion on frosty days.

An engine block heater stands out as the most effective remedy for the wear caused by cold starts. It warms the engine oil, allowing for a “hot start” that significantly reduces the likelihood of winter-related engine troubles and lowers emissions of pollutants from your car. This not only enhances engine efficiency but also contributes to environmental protection by cutting down on harmful emissions.

The engine block heater market, both lucrative and competitive, has seen consistent growth in recent years, spurred by escalating demand. This dynamic sector offers abundant opportunities for entrepreneurs eager to dive into the fast-paced world of automotive enhancements.

In this discussion, we will explore what it takes to succeed and where to source the finest engine block heaters. These devices are not only popular among auto parts dealers and manufacturers of trucks and ATVs but are also a crucial buy for anyone looking to ensure their diesel engine operates seamlessly throughout the year. If you’ve ever contemplated venturing into an engine-related business, this article is your gateway. We provide insights into how engine block heaters function, making it simpler for budding entrepreneurs to navigate the myriad of options, from different makes and models to brands available in today’s market.

Contents of This Page

When the biting cold of winter descends upon the high latitudes of the northern United States, Canada, Northern Europe, and the Far East, various engine types often struggle with start-up difficulties, oil condensation, accelerated wear, and increased susceptibility to breakdowns. For vehicle owners in these regions, the ideal scenario involves smooth engine starts, minimized wear and tear, and a reduced likelihood of breakdowns.

Providing your customers with engine block heaters equips them with a powerful tool against the cold-weather challenges. With these heaters, your customers can avoid the common cold-induced problems, ensuring their vehicles remain reliable and efficient even in the harshest winter conditions. This not only enhances vehicle performance but also boosts customer satisfaction by delivering a seamless, worry-free winter driving experience.

However, a quick search on Google reveals a dizzying array of engine block heaters, each differing in type and style. This abundance of choices can make selecting the right product and manufacturer a daunting task. To navigate this complex landscape, it’s crucial to understand the specific needs of your vehicle and the climatic challenges it faces. By focusing on products that are renowned for their reliability and effectiveness, and choosing manufacturers with stellar reputations for quality and customer support, you can make an informed decision that ensures optimal performance and longevity for your engine in cold weather conditions.

To dispel these uncertainties, we’ve crafted this article, drawing on our 28 years of experience in manufacturing engine heaters. Designed to deepen your understanding of engine block heaters, this guide will equip you with the knowledge needed to select the right manufacturer. By detailing key considerations such as durability, efficiency, compatibility, and customer support, we aim to assist you in making a well-informed choice that enhances your vehicle’s performance and reliability in cold climates.

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General Applications Engine Block Heater

During the winter months in high-latitude regions, outdoor temperatures can plummet dramatically. This extreme cold causes engine parts to contract and engine oil to solidify, resulting in difficulty starting diesel engines. The primary function of an engine block heater is to warm the engine coolant. This warming action thaws the solidified engine oil and mitigates the contraction of engine parts, restoring them to their normal state. Consequently, this facilitates easier cold starts even at very low temperatures.

Engine block heaters are not only essential for cars, trucks, and boats but are also crucial for ATVs, UTVs, and generator sets. By maintaining optimal engine temperature, these heaters ensure that vehicles and equipment operate efficiently and reliably, regardless of the chilling weather conditions.

Below, we outline several common application scenarios for engine block heaters. While this list covers the typical uses, there are undoubtedly many unique situations where an engine block heater could enhance performance and reliability. If your specific application is not mentioned, or if you have a unique scenario where you believe an engine block heater could be beneficial, please do not hesitate to contact us. Our team is eager to discuss and explore custom solutions tailored to meet your needs.

Engine block heaters Hot Selling Products

An engine block heater is a heating device that uses electrical energy or diesel and gasoline to raise the temperature of the engine. Depending on the energy used, engine heaters can be divided into

This article focuses on electric engine block heaters
To make the diesel engine easier starts in winter, you need to keep the engine warm. And there are many devices to keep the engine warm.
Below, we have listed various engine heater data and how they compare. You can see the difference between the various block heaters from this data. This can be very helpful if you are in the engine block heaters sales business.

If you have any other questions, please feel free to contact us.

Let’s start with a comparison of the various engine block heaters.

Name of Heater Rated Voltage Rated Power Price Installation Application Scope
Engine Block Heaters 110V/230V 500W-1500W Reasonable Price Easy Wide
Engine Heaters 110V/230V 500W-2500W Reasonable Price Easy Wide
Engine Coolant Heater 110V/230V 1000W-2500W Reasonable Price Easy Wide
Block Heaters 110V/230V 500W-1500W Reasonable Price Easy Wide
Diesel Engine Heater 12V/24V DC 5000W-12000W Expensive Professional Installation Wide
bolt on external heater 110V 400W Cheap Professional Installation Must be used on engines with anti-freeze plugs
Oil Pan Heater 110V/230V 75W-2000W Reasonable Price Easy Wide
Magnetic Heater 110V 200W Reasonable Price Easy Wide
Dipstick Heater 110V 90W-120W Cheap Easy Wide
Engine warming blanket 110V 400W-2000W Expensive Easy Wide

We have prepared an article for you, detailing the differences between different engine block heaters

Estimated Cost Analysis of Engine Block Heaters

From our thorough comparison of various engine block heaters, you should now have a clear understanding of their differences.

Next, we’ll delve into a practical example of bulk ordering from the Vvkb engine block heaters series to illustrate what the costs might involve.

Based on our extensive experience, a typical order should include both a small and a large engine block heater. For instance, consider placing an order for a small 20-foot container that comprises 60% Titan-P1 small engine preheaters and 40% Titan-P3 large engine block heaters. This configuration would allow the 20-foot container to accommodate approximately 8000 sets of the Vvkb Titan-P1 and 2000 sets of the Vvkb Titan-P3. This example showcases how bulk ordering can be tailored to meet diverse needs and applications, ensuring that you have the right mix of products to serve your customers effectively.

Their detailed costs are as follows.

Heater aluminum housing

Heater aluminum housing ------10000 sets 4.8 USD per set

We utilize ADC12 aluminum ingot, known in the U.S. as A380, for the housing of our heaters. This material is chosen for its superior mechanical properties, which include excellent flowability and fillability, making it ideal for complex casting tasks. Additionally, it boasts commendable machinability and corrosion resistance, ensuring durability and longevity in various environments. The surface finish quality of ADC12/A380 aluminum also stands out, providing an aesthetically pleasing appearance alongside its functional benefits. These characteristics make it an exemplary choice for heater housings, contributing to both the performance and longevity of our products.

Electric Heating Tube for Engine Heater Titan-P3

Electric heating tube --------- -10000pcs $2.7 each

Electric heating tubes are indeed one of the pivotal components of block heaters. The quality of these tubes is crucial as it directly determines the service life and overall reliability of the heater. These tubes are designed to efficiently convert electrical energy into heat, which is then uniformly distributed to warm the engine and its components. High-quality electric heating tubes ensure consistent performance, even under extreme conditions, and reduce the risk of failures or inefficiencies. Thus, selecting a block heater with superior-grade electric heating tubes is essential for extending the durability of your heating solution and ensuring optimal functionality throughout its service life.

The Vvkb electric heating tubes are engineered for longevity, offering up to 8000 hours of service life. If used for a few hours each day during the six colder months of the year, these heating tubes can reliably function for up to seven years. This durability ensures that your investment in a Vvkb block heater is both efficient and cost-effective over the long term.

It’s important to note that different models of Vvkb block heaters are equipped with different types of electric heating tubes tailored to specific needs and applications. To find the perfect match for your requirements, please reach out to us with details about the type of block heaters you need. We will then provide you with accurate pricing for the electric heating tubes suitable for your selected model.

For most applications, our heaters feature a maximum power output of 3000W. However, for larger generator sets that require more intense heating, our heaters can accommodate power requirements of 4000-5000W. This adaptability ensures that we can cater to a broad range of heating needs, from standard vehicles to large industrial machinery.

Electric Heating Tube for Engine Heater Titan-B1

Electric Heating Tube for Engine Heater Titan-P5

Electric Heating Tube for Engine Heater Titan-P1

If your company produces large generator sets, we can customize them for you. Contact US Now.

Block heater water pump coil

Built-in pump ---------10000pcs 3.5 USD each

When designing our engine heater with an integrated water pump, we prioritized compactness to accommodate the restricted spaces commonly found within vehicle engine compartments. This thoughtful design ensures that our heaters are not only effective but also fit seamlessly and unobtrusively. The inclusion of a built-in water pump significantly enhances the efficiency of the heating process by rapidly circulating warm coolant throughout the engine, promoting even heat distribution and quicker warming times. This strategic approach reduces installation complexities and broadens the applicability of our heaters across diverse vehicle makes and models, offering a versatile solution for numerous users.

Our commitment to minimizing the block heater’s form factor reflects our understanding of the spatial challenges in many vehicle engine compartments. After extensive testing and careful selection by our engineers, we chose to use a magnetic pump. This pump features a rotor that operates on an alternating current, creating an interactive magnetic field. The rotor, embedded with rare earth magnets, spins rapidly under this magnetic field, driving an impeller at its end. As the impeller rotates, it generates centrifugal force, effectively moving the coolant through the system.

It’s crucial to note that the magnetic pump does not have self-priming capabilities. Thus, ensuring that no air is present within the block heaters or the coolant piping during installation is essential. Air in the system can lead to intermittent pump operation, adversely affecting the heating process’s efficiency.

We are currently developing block heaters for larger engines suited for heavy machinery and large generator sets. These models will be substantially larger and feature various water pump types to accommodate the greater demands.

Furthermore, if your company has specific pump requirements, we offer customization services to meet these unique specifications. This adaptability ensures that we can deliver precisely tailored solutions that align with the operational needs and conditions of your equipment.

Power cord --------- --10000 pcs $3.5 each

Engine block heaters need to be connected to 110V or 220V AC. The length of the standard heater power cord is 1 meter. The diameter of the power cord is 1.5 square millimeters (the American standard is AWG16).

Users may need additional power cords for their heaters, depending on the parking location and the distance from the power source.

Since the heater is installed within the vehicle’s engine compartment, temperatures there can rise significantly when the engine is running. To cope with these elevated temperatures, we utilize rubber power cords as a protective layer for the heater’s power cables. Rubber is capable of withstanding high temperatures, ensuring durability and safety in a heated environment.

Connection Cable

EU Standard Power Cord

Armored Power Cord

We also have the option of offering power cords with armor. You can install the heaters in the right place. One side of the wire connects to the block heaters, and the other side can be mounted at the vehicle’s entry grill, so when your users need to use the heater, they can easily connect to the power source.

Block Heater temperature controller

Thermostat --------- -20,000 units $1.90 each

Many years ago, we designed our engine block heaters to use only one thermostat. Later, we modified some models of heaters to add additional thermostats in order to allow for more precise temperature control and to make the heaters more reliable.

We use a material containing silver-nickel alloy for the thermostat contacts, and the thickness of the alloy reaches 0.25mm. our thermostats can have a life of 20,000 switching cycles. There is very little chance of thermostat failure over the entire design life of the engine block heaters.
The ceramic material used for the housing material of the Vvkb thermostat, ceramic material makes the operation of the thermostat more reliable.

Block heater water pump rotor

Other accessories ---------10000 sets 2.7 USD per set

The peripheral accessories of the heater also include various screws and nuts and connectors. We use a variety of accessories that meet TUV standards.

Engine block heater production process and duration estimation

Step 1, Raw material procurement (2-3 days)

We strategically manage our inventory by making targeted purchases based on the specific products outlined in your company’s order within our supplier system. Typically, within 2-5 days, our suppliers deliver the necessary raw materials directly to our semi-finished goods warehouse. This efficient supply chain management ensures that we have the required components on hand promptly, facilitating a swift production process while maintaining high standards of quality and timely delivery.

raw material procurement

Step 2, sampling and testing of raw materials (1-2 days)

Our testing department will test the received raw materials to make sure they are fully compliant with our standards – during the raw material testing phase, we hardly ever encounter any raw materials that do not meet our standards.

Test various performances of heaters on the vehicle

Step 3, production and testing of semi-finished products (7-10 days)

After the raw materials pass the testing, we enter the production stage of semi-finished products. Our different production workshops will make different raw materials into semi-finished products that meet our requirements, according to requirements.

Semi-finished production

During the production of the engine block heaters’ semi-finished products, our inspection department conducts simultaneous quality tests. This crucial step in the manufacturing process allows us to identify any issues or defects in the semi-finished products, ensuring that only components that meet our high standards proceed to the next stage. After completing these tests, the production process moves forward to the assembly stage of the engine block heaters. This methodical approach to quality assurance is integral to maintaining the reliability and effectiveness of our final products.

Step 4, assembly and final testing stage (20-30 days)

After preparing all the semi-finished products, our workshop will make some samples to keep in the sample room to be delivered. These samples are a reflection of the overall quality of the shipment. If your company needs, we can also send some samples to your company.

Test various performances of heaters on the vehicle

We retain samples of our heaters in our sample room for a period of nine months. During this time, if your company has any concerns regarding the quality of the heaters, we can disassemble and test these samples to address any issues.

Our skilled workers meticulously assemble the heaters according to the specific requirements of different models and the precise assembly guidelines set by our company. This ensures that the quality of the assembled heaters is entirely reliable and meets our high standards.

After assembly, our testers conduct a comprehensive evaluation of the overall performance of the heaters. The testing protocol includes:

  • Air tightness test: Ensures that the heater is completely sealed and no air leaks are present.
  • High-pressure resistance test: Verifies that the heater can withstand high pressures without failing.
  • Water pump test: Checks the functionality and efficiency of the water pump.
  • Cosmetic inspection: Assesses the external appearance of the heater to ensure there are no aesthetic defects.

Once these tests are successfully completed, the heaters are carefully packaged and stored in our warehouse, ready to be handled by our logistics department for distribution. This thorough process guarantees that the heaters delivered to you are of the highest quality and ready for use.

Step 5, book shipping warehouse (1-5 days)

Our logistics department will coordinate with you about logistics. If your company has a long term partner logistics company, we can use your logistics company to send the goods.

Book shipping warehouse

If your company does not yet have a long-term partnership with a logistics provider, or if you’re interested in comparing costs, we can request a quote from our trusted logistics service provider. This option is designed to streamline your decision-making process regarding shipping and handling.

Additionally, if your company lacks experience in importing goods or prefers not to manage the complexities of import procedures, we offer a comprehensive service package. With this service, you simply need to place your order, and we will handle everything else. We organize the production, book the necessary space for sea freight, and coordinate with our logistics partner to assist with customs clearance services. They will deliver the goods right to your doorstep.

All you need to do is cover the cost of the purchase and the customs duties. You will receive our products at your location without the need to engage in the detailed logistics typically required in international shipping. This service is designed to be as convenient and hassle-free as possible, ensuring a smooth and efficient delivery process.

Step 6, Shipping (15-35 days)

Our production factory is located in Wenzhou, Zhejiang, China, near Shanghai port and Ningbo port. The exact shipping time depends on the location of your country from our factory.

The sea freight shipping fee

Typically, the transit times for our shipments vary depending on the destination:

  • Canada and the West Coast of the United States, as well as Australia: Approximately 15-20 days.
  • Eastern United States, Eastern Canada, and Europe: Approximately 30-40 days.
  • Southern Africa and South America: Approximately 30-45 days.

These estimates provide a general guideline for planning purposes. However, actual transit times may vary based on specific factors such as customs clearance processes, logistical delays, and local delivery conditions. We strive to ensure timely delivery and keep you informed throughout the shipping process to manage expectations effectively.

Quality Control Process of Engine Block Heater

You must be very concerned about the quality of the various accessories you purchase, and you don’t want to buy products of bad quality.

Now let’s see how to control the quality of engine heater products.

Start from the selection of raw material suppliers

raw material procurement

When selecting raw material suppliers for engine heater products, ensuring consistency in the quality of materials is crucial. Here are some best practices for choosing and managing your raw material suppliers:

  1. Assess Supplier History and Reputation:

    • Prioritize suppliers with a proven track record and a strong industry reputation. Long-standing suppliers are often more reliable and have more experience in maintaining quality standards.
  2. Diversify Supplier Base:

    • It’s wise to establish relationships with multiple (2-3) suppliers for critical raw materials. This diversification strategy helps mitigate risks associated with supplier reliability. Should your primary supplier encounter issues such as production halts or supply chain disruptions, having alternative suppliers ensures continuity in your production line without compromising delivery schedules.
  3. Conduct Regular Audits:

    • Implement a system of regular audits for your suppliers to ensure ongoing compliance with quality standards. These audits can help identify potential issues before they affect production and reinforce the importance of quality in your partnerships.
  4. Negotiate Service Level Agreements (SLAs):

    • Clearly define expectations through SLAs, which detail quality requirements, delivery times, and response strategies in case of quality failures. SLAs provide a legal framework that facilitates easier resolution of disputes and ensures adherence to agreed standards.
  5. Engage in Collaborative Relationships:

    • Foster a collaborative relationship with your suppliers. Involve them in your product development processes and share feedback regularly. Collaborative relationships can lead to better innovation, improved quality, and more effective responses to market demands.
  6. Quality Control Processes:

    • Ensure that your suppliers have robust quality control processes in place. These processes should include regular testing and validation of raw materials to ensure they meet your specifications consistently.

By focusing on these aspects, you can establish a reliable and high-quality supply chain that supports your production needs efficiently and ensures the overall quality of your engine heaters.

Control of the production process of semi-finished products

Heat exchanger aluminum die-casting workshop

The manufacturing process for the housing of engine block heaters involves aluminum die casting, a technique known for its precision and ability to produce high-quality components. To ensure the quality of the heater housing, it’s crucial that the final product is free of trachoma, a type of defect characterized by small holes or porous regions that can occur in casting.

Here’s a detailed approach to achieving a trachoma-free heater housing through careful control of the aluminum die casting process:

  1. Preparation and Purity of Molten Aluminum:

    • The quality of the aluminum used is critical. Before die casting, ensure that the aluminum melt is purified and free from excessive impurities. This involves a process known as drossing, where slag (the oxidized impurities that rise to the surface of the molten metal) is carefully removed.
  2. Control of Melting Process:

    • Maintain optimal melting temperatures and conditions to prevent the introduction of new impurities and to manage the viscosity of the aluminum. This helps in filling the molds completely and uniformly without introducing air pockets or other defects.
  3. Mold Design and Maintenance:

    • The design of the molds must be precise, with smooth surfaces and proper venting channels to allow gases to escape. Regular maintenance of the molds is necessary to prevent any deterioration that could lead to defects in the cast parts.
  4. Injection Parameters:

    • The parameters of the die casting machine, such as the injection pressure and speed, need to be finely tuned. Proper settings ensure that the molten aluminum fills the mold completely and solidifies uniformly, minimizing the risk of trachoma.
  5. Post-Casting Treatments:

    • After casting, the parts may undergo various treatments such as heat treating or surface finishing to enhance strength and appearance. These processes also help in identifying any hidden defects and improving the overall quality of the housing.
  6. Quality Inspection:

    • Implement rigorous inspection procedures throughout the manufacturing process. Use techniques like X-ray inspection or ultrasonic testing to detect internal defects such as trachoma that are not visible to the naked eye.
  7. Continuous Improvement:

    • Collect data on the casting process and product defects for continuous analysis. Use this data to refine processes and reduce the occurrence of trachoma and other casting defects over time.

By adhering to these detailed steps, the integrity of the aluminum die casting process can be maintained, ensuring that the engine block heater housings are produced with high aesthetic and structural standards, free from trachoma and other defects.

Manufacture of water pump

Production of diesel heater spare parts

Ensuring the efficiency and quality of the water pump in engine block heaters involves attention to several critical components, particularly the design of the magnets and the quality of the enameled wire used in the pump’s coil. Here’s a detailed breakdown of these components and their specifications:

  1. Magnets Design:

    • The magnets used in the water pump should be formed in one piece to minimize gaps. Smaller gaps between segments reduce magnetic energy loss, enhancing the efficiency of the pump. This design ensures that the magnetic field is strong and uniform, which is crucial for the stable operation of the pump.
  2. Enameled Wire Quality:

    • The coil of the water pump is wound with enameled wire, which is vital for the performance and durability of the pump. The quality of the enameled wire is a key factor in determining the overall quality of the water pump. It must have insulation that can withstand temperatures up to 180 degrees Celsius (356 degrees Fahrenheit). This high temperature resistance ensures that the wire insulation will not degrade under normal operating temperatures, thereby preventing electrical shorts and failures.
  3. Rotor Material:

    • The rotor of the water pump is constructed from pressed rare earth material. Rare earth magnets are chosen for their superior magnetic properties compared to other materials, which allows for a more compact and efficient motor design. Additionally, the weak magnetic property of this material ensures that it will not interfere with the electrical components of the vehicle. This is important to avoid any adverse effects on the vehicle’s electronic systems.

By focusing on these aspects, manufacturers can greatly enhance the performance and reliability of water pumps used in engine block heaters. This leads to better energy efficiency, durability, and overall satisfaction with the heater’s performance, ensuring that the vehicle operates smoothly in various temperature conditions.

Overall engine heater inspection

Test the diesel heater

After the assembly of the engine block heater, a series of rigorous tests are conducted to ensure its functionality, safety, and reliability. Here’s an overview of these essential testing procedures:

  1. Airtightness Test:

    • The completed heaters undergo an airtightness test to verify that there are no water leaks. This test is critical because any leakage can lead to inefficiency and potential damage to the engine or the heater itself. The process involves pressurizing the heater system and monitoring it for any loss of pressure, which would indicate a leak.
  2. Insulation Test:

    • The insulation test is another vital assessment. This test checks the electrical insulation of the heater, ensuring that there are no potential pathways for electrical leakage, which could lead to safety hazards such as short circuits or electrical shocks. A high voltage is applied to the heater components to ensure that the insulation withstands operational stresses.
  3. Water Pump Test:

    • Testing the water pump is crucial to confirm that it operates flawlessly. The pump must consistently circulate coolant without failure under normal operating conditions. This test involves running the pump through multiple cycles to check for mechanical integrity, operational consistency, and flow rate accuracy.

These tests are designed to ensure that every engine block heater manufactured meets the highest standards of quality and safety. By thoroughly testing each heater, manufacturers can guarantee that the product is reliable and will perform effectively in keeping engines warm and ready to start in cold conditions.

The Basic Knowledge of Engine Block Heater

This section serves as a comprehensive introduction to engine block heaters, covering all the essential information you might need. It includes detailed explanations of how the heaters work, their construction, and the benefits they provide. We strongly recommend reading this section thoroughly to gain a clearer understanding of engine block heaters. This knowledge will help you appreciate the significance of these devices and how they contribute to enhancing vehicle performance in cold conditions.

What is an engine and how it work

An engine is a complex assembly of various transmission components that collaborate intricately to convert the chemical energy stored in fuel into mechanical energy. The main site of fuel combustion is within the engine’s cylinder. Here, the energy released from burning the fuel acts on key drive system components like the piston and crankshaft. These components play a crucial role in transforming the energy produced during combustion into kinetic energy, which then powers the vehicle. This conversion process is fundamental to the operation of any engine, facilitating the movement and functionality of automobiles.

Engine clearance is critical for determining efficiency, necessitating a precise fit among various engine components, which are primarily composed of metal materials like iron and aluminum alloys. These materials naturally expand and contract in response to temperature changes—a principle known as thermal expansion and contraction.

Engines are designed to operate optimally when warm, with components engineered to fit perfectly under typical operating temperatures. When the engine is cold, particularly during startup in low temperatures, metal components contract, increasing the clearance between them. This can lead to inefficiencies, as larger gaps may reduce the effectiveness of compression and other functions, potentially affecting performance.

Engine Block Heater

In the design of engine clearances, considerations are made to accommodate the typical operating temperatures of the engine, which is around 90 degrees Celsius. At this temperature, the metal components expand to their designed operational clearances. Conversely, at much lower temperatures, such as around 5 degrees Celsius, the engine components experience cold shrinkage, increasing the clearance between parts and potentially affecting engine efficiency until the parts warm up.

To mitigate friction and wear among the moving parts, the engine is lubricated with engine oil. This oil forms a thin film between components, reducing direct metal-to-metal contact and thus minimizing wear. When the engine is inactive, gravity causes most of the engine oil to settle in the oil pan. However, a residual film of oil remains on the engine components, providing initial lubrication when the engine starts again. As the engine operates, the oil pump circulates oil continuously, ensuring all moving parts are adequately lubricated for smooth and efficient function. This system is essential for reducing friction and preventing damage, particularly at startup and during operation.

Heat map of conventional cars

As temperatures drop, the viscosity of the lubricating oil increases due to the cold, becoming thicker and less fluid. This change significantly affects engine components such as pistons and cylinders, which have large contact areas and rely on a thin, fluid oil layer to reduce friction. When the oil thickens, it becomes more challenging for the vehicle’s starter to move the piston effectively, which is a common issue that makes starting engines difficult in cold weather.

Surrounding the engine cylinder are coolant lines, which play a crucial role in managing engine temperature. These lines carry coolant that absorbs heat from the engine, preventing damage that can be caused by the high temperatures of fuel combustion.

In cold conditions, the Vvkb engine block heater proves especially beneficial. It works by warming the coolant via the radiator hose, allowing the heated coolant to circulate through the coolant tubes adjacent to the cylinder. This process raises the temperature around the cylinder, helping the thickened oil to melt and flow more freely. Consequently, the engine reaches a suitable temperature for operation more quickly, facilitating easier starts and achieving the effect of a “hot start.” This not only improves start-up reliability in cold weather but also enhances overall engine performance and longevity.

What is an engine block heater and what does a block heater actually do?

An engine block heater is a device designed to pre-warm the engine of a vehicle, making it easier to start in cold weather. It functions by converting electrical energy into thermal energy, which is then used to heat the coolant within the engine’s cooling system.

The heated coolant circulates throughout the engine, effectively transferring heat to the engine block. This process raises the temperature of the engine and its components, causing the engine oil, which may have thickened due to low temperatures, to thin and flow more smoothly. As a result, the overall viscosity of the oil decreases, reducing the resistance against moving parts like pistons and cylinders.

By warming the engine in this manner, the engine block heater reduces the strain on the battery and starter system, and helps avoid wear on the engine due to cold starts. This is particularly valuable in winter when temperatures drop significantly, ensuring that the engine starts more easily and operates efficiently right from the beginning. This not only enhances comfort and convenience for the driver but also contributes to the longevity and reliability of the vehicle’s engine.

Which engine heaters are the most popular with my customers? What type of engine heater do I want to offer my customers?

The tank type engine block heater with a built-in water pump is highly favored due to its ease of installation and effective performance, particularly in addressing the challenges of cold starts during winter.

Here are the main reasons for its popularity:

    1. Reasonable Price: It offers a cost-effective solution, allowing users to solve the cold start problem in winter without a significant financial outlay.

    2. Easy Installation: This heater is designed to be directly connected in the coolant hose, making its installation straightforward and hassle-free.

    3. High Compatibility: It works with any engine that utilizes coolant, making it a versatile option suitable for a wide range of vehicles.

    4. Built-in Temperature Controller: The heater includes a temperature control mechanism that prevents it from operating too long, thereby avoiding excessively high coolant temperatures that could potentially harm the cooling system.

    5. Ease of Replacement: In the event of a heater failure, users can easily remove the old heater and install a new one without any need for modifications to the vehicle’s piping.

    6. Enhanced Efficiency with Built-in Water Pump: While tank heaters without a built-in pump rely on gravity for coolant circulation, models with an integrated pump facilitate faster and more efficient coolant flow. This shortens the heater’s working time, enhancing overall energy efficiency.

    These features make the tank type engine block heater with a built-in water pump an appealing choice for drivers looking to enhance their vehicle’s winter performance and reliability.

How do I install an engine block heater?

Installing an engine block heater with a built-in water pump, such as the Vvkb engine block heater Titan-P1, is straightforward.

Here’s a step-by-step guide to the installation process:

  1. Select and Cut the Coolant Hose:

    • Identify the appropriate coolant hose for the heater installation and carefully cut it to where the heater will be inserted.
  2. Drain the Coolant:

    • Open the tank cover to release the engine coolant. Use a container to catch the coolant as it drains.
  3. Prepare Hose Clamps:

    • Slide hose clamps onto the coolant hose before connecting it to the heater. This prepares for a secure attachment.
  4. Attach the Heater:

    • Connect the water inlet of the block heater to the cut end of the coolant hose. Secure the connection by tightening the hose clamp screw.
  5. Position the Heater:

    • Position the connected part of the engine heater approximately 10cm-20cm below the tank port to ensure proper coolant flow.
  6. Refill Coolant:

    • Slowly add coolant through the tank port until it overflows from the heater outlet. This step is crucial to ensure all air is purged from the coolant hose and heater.
  7. Complete the Circuit:

    • Attach the engine heater outlet to the other end of the coolant hose and secure it with the hose clamp.
  8. Top Off the Coolant:

    • Continue adding coolant to the system, ensuring the tank is completely filled.
  9. Check for Leaks:

    • Inspect the engine heater housing and hose connections to ensure there are no leaks and that the antifreeze is secure.
  10. Start the Engine:

    • Start the engine to activate the vehicle’s existing pump, which helps circulate the coolant through the system and expel any trapped air.
  11. Final Coolant Check:

    • Recheck the coolant level at the water tank port after the engine has run for a few minutes. Add more coolant if necessary until the tank is full.
  12. Secure the Tank Cover and Electrical Cord:

    • Tighten the water tank cover and properly position the electrical cord. Ensure it is safely away from any moving parts or heat sources.

By following these steps, you can successfully install the Vvkb engine block heater Titan-P1, enhancing your vehicle’s cold-start capabilities and ensuring it operates efficiently during colder months.

Engine Heater Dimensional Drawing

Engine block heater faults and solutions

It is possible that your users will encounter various failures in the process of using the engine heater. We have compiled a list of engine heater failures and their solutions.

The block heater casing is very hot and the water pump works intermittently.

Common Issue: Block Heater Housing Overheating
  • Symptom: The block heater housing feels much hotter than the ambient temperature.
  • Most Common Cause: This issue typically arises due to air trapped inside the heater or the coolant hose, or due to a malfunctioning or burnt-out water pump in the heater.
Engine coolant heater Titan-P5 installation diagram
Troubleshooting and Solutions
For New Block Heaters:


    • Step 1: Disconnect the block heater from the coolant hose.
    • Step 2: Reinstall the block heater, ensuring to follow the installation procedures carefully to avoid trapping air within the system.
    • Step 3: Refill the coolant slowly to minimize the chance of air entrapment. After adding the coolant, run the engine for a few minutes to help circulate the coolant and release any trapped air.
For Block Heaters in Use:

Check Water Pump Functionality:

    • Step 1: Energize the block heater for a few seconds to check for any vibrations from the water pump. A functioning water pump should emit a slight vibration indicating it is working.
    • Step 2: If there is no vibration and the heater housing is still overheating, this likely indicates that the water pump is burnt out.
    • Step 3: Replace the water pump. Ensure that the replacement is compatible with your model and correctly installed.

The engine block heater has a leakage condition.

Dealing with leakage in an engine block heater can be problematic, as it often involves electrical safety risks along with the malfunction of the heating system. Here’s a structured approach to identifying and resolving leakage issues in the engine block heater:

Engine Block Heater Accessories Diagram
Problem: Leakage in Engine Block Heater

Symptoms: Leakage could lead to electrical hazards or malfunctioning of the heater.

Possible Causes:

  • Coolant or liquid penetration into the electrical compartment of the engine block heater.
  • Burnt electrical elements, motor failure, or thermostat malfunction leading to leakage.
Troubleshooting and Solutions
  1. Inspect and Identify the Leak:

    • Step 1: Safely remove the engine block heater from the vehicle’s cooling system to prevent any further electrical risk.
    • Step 2: Open the electrical compartment of the heater to check for any presence of fluid. If fluid is found inside the electrical compartment, further investigation is needed to determine the source of the leak.
  2. Locate the Source of the Leak:

    • Possible Locations: The leak could be coming from the heater housing or due to a compromised seal within the heater.
    • Action: Thoroughly inspect the heater housing and seals for any signs of damage or wear that could contribute to leakage.
  3. Dry and Test the Electrical Components:

    • Step 1: After locating and addressing the source of the leak, dry out all electrical components thoroughly.
    • Step 2: Use a multimeter to measure the resistance at the engine block heater plug. Presence of resistance indicates that the electrical circuitry is intact and may function normally once reassembled.
  4. Inspect Specific Components:

    • Heating Element, Pump, and Thermostat: Open the heater and visually inspect these components. Look for obvious signs of damage or malfunction such as burnt parts or broken elements.
    • Faulty Part Identification: If no issues are found with the pump and thermostat, focus on the heating element which might be the culprit.
  5. Replace Faulty Parts:

    • If any components are determined to be faulty (pump, thermostat, or heating element), replace them with compatible new parts to ensure proper functioning of the heater.
  6. Reassemble and Test:

    • Once repairs and replacements are completed, reassemble the engine block heater and reinstall it in the vehicle. Test the heater to ensure it operates correctly without leaks or electrical issues.
Final Checks:
  • Safety Verification: Ensure all electrical connections are secure and insulated to prevent future leaks or hazards.
  • Operational Test: Run the heater to verify it heats efficiently and no further leaks are present.

By methodically following these steps, you can effectively resolve leakage issues in engine block heaters, restoring their functionality and ensuring safe operation within the vehicle’s cooling system.

Engine Block Heater

How to choose the right engine block heater manufacturer? Why China's engine block heaters are the most cost-effective?

Factors to Consider When Choosing a Manufacturer
  1. Manufacturing Experience: Look for manufacturers with extensive experience in producing engine block heaters. Their experience often translates into better quality control and the ability to handle complex customizations.

  2. Customization Capabilities: If your requirements are unique (e.g., high power, special mounting brackets), choose a manufacturer that offers customization. They should be able to design and manufacture heaters that fit your specific needs.

  3. Production Facilities: Ensure that the manufacturer has comprehensive production facilities, including the capability to make molds and other necessary manufacturing tools. This is essential for both customization and scalability of production.

  4. Quality Assurance: Assess the manufacturer’s quality assurance processes. Effective quality control is crucial to ensuring that the products meet your standards and are reliable.

  5. Cost-Effectiveness: Consider the overall cost-effectiveness of the manufacturer. This includes not only the unit cost of the products but also the efficiency of their production processes and the potential for long-term partnerships.

Engine Block Heater
Why Choose Chinese Engine Block Heater Manufacturers?
  • Complete Industrial Chain: China boasts a well-established and comprehensive industrial chain that supports all aspects of manufacturing, from raw materials to finished products. This integration can lead to more efficient production processes and reduced costs.

  • Skilled Labor Force: Despite rising labor costs, Chinese workers are known for their strong work ethic. Additionally, China produces over 10 million college graduates annually, many of whom enter the manufacturing sector, bringing with them new skills and knowledge that can enhance product quality.

  • Innovation and Adaptability: Chinese manufacturers are often quick to adapt to new technologies and market demands, making them capable of handling various manufacturing challenges and requirements.

  • Scale: The scale of manufacturing in China can lead to cost savings through economies of scale, which can be especially beneficial if you need large quantities of custom products.

  • Global Reach: Chinese manufacturers have extensive experience in dealing with international markets, which can facilitate easier logistics and export processes for your heaters.


When choosing a manufacturer for engine block heaters, it is important to assess their experience, facilities, and ability to customize products. Chinese manufacturers offer a compelling option due to their complete industrial ecosystem, skilled workforce, and the ability to provide cost-effective solutions without compromising on quality. These advantages make Chinese engine block heaters competitive in the global market, providing reliable and affordable options for companies looking to source these products.

The FAQS About Engine Block Heater

We have compiled a list of frequently asked questions about engine block heaters that may be helpful to you in choosing an engine block heater manufacturer and selling engine block heaters.

You may have other questions, please feel free to contact us.

The minimum order quantity for engine block heaters will vary depending on the model you choose. For our regular engine block heaters, the minimum order quantity is 500 sets. We also provide customization service, the minimum order quantity for custom engine block heater is 2000 sets.

Depending on how busy our orders are, the basic lead time is from about 30-45 days - 60 days.

Our common feedback terms are

  • T/T (Telegraphic Transfer)
  • L/C (Letter of Credit)

We have been producing engine block heaters and various other types of heaters since August 1996.
Our company has stood the test of the market and our customers.
We hope to bring your company long-term, stable engine block heaters. Our company will continue to do so for the foreseeable future.

We already have agents in some countries. However, there are many countries where there are no agents. Please contact our customer service to confirm the agent information in your country.

We have provided ODM services to more than 50 companies in the past 20 years. We are fully capable of designing a special engine block heater for your company. Please contact our customer service staff.

Our certifications include: TUV, CE, FCC, RoHS certification

Maybe you are a personal user and you may also have some questions about engine block heaters.

We have prepared some common questions and answers for you. If you don’t find the question you need, you can contact our customer service staff. We will get back to you, within 8 hours.

We think you need an engine block heater for the following reasons.
Keeps the engine oil flowing smoothly.
Reduce wear and tear on the engine from cold starts
Significantly reduce vehicle emissions of exhaust pollutants.

Even, you need oil pan heater to heat the engine oil pan.
Your engine should have freeze plug and you can also consider the option of bolt on external heater (bolt on heater).

Depending on the power of the block heater and the engine size of your vehicle, as well as the outside temperature, the heating time may vary.
We recommend that you observe the heating effect of the heater and record the heating time when you use the engine block heater for the first time. In the future, you can power up the block heater in advance.
You can also choose a timer for your block heater and you can set the timer start time.

Although Vvkb block heaters come with a temperature control system, we do not recommend leaving your block heater plugged in all night for safety reasons.
How warm does a block heater keep your engine?
The engine of an average car can be started easily at 10-20 degrees Celsius. And, it will not affect the engine.
You only need to energize the block heater for 30 to 60 minutes and the engine will be able to reach the desired temperature.

Engine block heaters warm the engine by heating the coolant in the vehicle's circulation system and allowing the heated coolant to warm the engine. The use of a block heater has only benefits for the engine, without damaging it.

You can see the price on our retail website: www.RVheater.com

According to the working principle of the block heater, the heater is connected to the cooling system of the vehicle. And the cooling system is not going to catch fire.
The block heater uses 110V or 230V voltage. And, the power of the heater varies from 500W-3000W. When the heater is working, the current intensity through the wire will be higher. And the block heater usually has to use extra extension cords. You need to take into account the cross-sectional area of the wire. If the cross-sectional area of the wire is too small, the excessive current flowing through the wire may cause the wire to get hot and there will be a fire hazard.
When the block heater with built-in water pump works, the water pump will take away the heat and the temperature of the heater housing is not particularly to.
However, there can be a situation where the water pump does not work properly. If the pump does not work properly, the heater housing temperature, may exceed 80 degrees Celsius (degrees Fahrenheit, the housing temperature of a heater without a built-in pump can also be very high). When installing the heater, we recommend that the heater be approximately 15 cm(6 in) away from the fuel line.

The normal length of wire for a cylinder heater, is 1-1.5 m. Vvkb heaters are also paired with special connecting wires that connect up to 5 m in length. However, additional extension cords may be required.
The principle of extension cord selection is based on the rated power of the heater. For the safety of electricity, try to now thicker diameter wires.

The power of the block heater varies from 500W-3000W. To choose the right power for your engine block heater, you have to take into account the size of your engine, the volume of coolant in your vehicle's cooling system and the minimum temperature in your city in winter.
Typically, for sedans and ATVs, VTUs and go-karts, we recommend choosing a 1000W block heater.
For other large vehicles, we recommend 1500W for US and Canadian customers, and 2000W or 2500W for European and Australian customers.
The same engine, choose different power cylinder heater, they have different working time. High power engine heater, working time will be shorter, low power heater, working time need longer.

If you wish to see if the engine has reached sufficient temperature, you can start the engine without unplugging it.
However, if you are pulling the vehicle out of a parked position, you will need to unplug it.

The design life of common engine block heaters generally reaches 3-5 years.
Vvkb engine block heaters have a design life of 5-8 years.

When the outdoor temperature reaches 5 degrees Celsius,(41 degrees Fahrenheit) the engine's cold shrinkage begins to appear. By starting the engine cold, it increases the wear and tear on the engine.
As an engine heater manufacturer, we recommend that you use an engine block heater when the outside temperature falls below 5 degrees Celsius(41 degrees Fahrenheit)

Depending on the design, Vvkb engine block heaters come with one thermostat or two thermostats.

Cars in high latitude areas should be equipped with a block heater in order to reduce the cost of using the vehicle.
While in tropical areas, the block heater may not be used.

At low temperatures, engine oil can solidify in the oil pan. You can use an oil pan heater to heat the sump and allow the engine oil indirectly to be heated. You can also use a magnetic heater to allow the engine oil to melt.
The oil pan of iron material when magnetic heater. And aluminum or other material oil pan, you can use oil pan heater.

The dipstick heater is in direct contact with the oil and the engine oil directly be heated. There is no need for professionally installed, and dipstick heater replaces are very convenient.
This is the reason why many users consider choosing dipstick heaters.
However, the power of dipstick heaters is too small and, moreover, the effect is not very satisfactory. We recommend that you choose another style of heater.

The inline heater is a non circulating pump type heater. It can rely on gravity circulation. It also has a temperature sensor and can operating temperature.
You can pair the heater with a plug that has a remote starter function, and your heater can be started remotely.

You may hear people recommending you to use electric blankets and battery heaters.
In our experience, using an engine heater to heat the coolant has been able to get the engine started easily. You do not need to use other styles of heaters.

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