2.5KW Diesel Air Heater — rated to -40°C. E-mark, CE, RoHS and FCC certified — buy the Apollo-V1 diesel air heater on RVHeater.com.
5KW Diesel Air Heater — rated to -40°C. The 5KW size for full-size RVs, boat cabins and sleeper trucks — buy the Apollo-V2 diesel air heater on RVHeater.com.
5KW Diesel Water Heater — rated to -45°C. Warms your engine coolant and your cabin from one burner — buy the Apollo-C1 diesel water heater on RVHeater.com.
The 12KW model for large vehicles and multi-zone builds — buy the 12KW diesel water heater on RVHeater.com.
No cutting, no drilling, no permanent install — buy the portable diesel heater on RVHeater.com.
5KW Gasoline Water Heater
Vvkb has designed and manufactured parking heaters since 1996 — that’s 30 years of factory experience behind every unit you receive.
Whether you drive a truck, RV, van, or boat, there’s a Vvkb model built for your setup — from 2.5KW diesel air heaters to 12KW water systems, all rated to -40°C.
Not sure which parking heater fits your vehicle? This guide covers the key differences between air and water heaters, what specs matter, and how to choose the right model.
READ BUYING GUIDE
Step-by-step installation guide for trucks, cars, caravans, and boats. Includes diagrams, videos, and wiring instructions so you get it right the first time.
READ INSTALLATION GUIDE
Every component explained — from the combustion chamber and glow plug to the fuel pump and controller. Read this before you install or troubleshoot your heater.
VIEW PARTS LIST
Heater won't start? Error code showing? This guide covers the most common faults and how to fix them — no technician needed.
TROUBLESHOOTING GUIDE
Learn how to set heat levels, program scheduled start times, and use the timer function on your Vvkb controller.
WATCH INSTALLATION VIDEO
Instructional video on how to use VVKB’s heater control panel and scheduled power-on and power-off functions.
WATCH VIDEO
A parking heater is a fuel-burning unit that heats your vehicle independently — no engine running required. You park, switch it on, and your cab or cabin reaches a comfortable temperature within minutes.
Combustion happens in a sealed chamber inside the unit. Exhaust exits through a separate outlet outside the vehicle. Your cabin air is completely isolated from the combustion process — that’s why diesel parking heaters with E-mark certification pass European vehicle safety testing.
“Parking heater” and “diesel heater” refer to the same type of product. The term “parking heater” came first; “diesel heater” became more common as the market grew. Vvkb has made both diesel and petrol parking heaters since 1996.
Both run on diesel. The difference is how heat reaches you.
| Diesel Air Heater | Diesel Water Heater | |
|---|---|---|
| How it heats | Burns diesel, blows warm air directly into the cabin | Burns diesel, heats coolant — warm air comes through your existing vents |
| Best for | Trucks, vans, RVs — single-space heating | Larger vehicles, boats, cab + engine preheat |
| Vvkb models | Apollo-V1 (2.5KW), Apollo-V2 (5KW) | Apollo-C1 (5KW), Apollo-C3 (12KW) |
| Installation | Simpler — fewer connections | More complex — connects to coolant system |
| Certifications | CE, RoHS, FCC — plus ECE R122 & R10 type approval on the Apollo-V1 | CE, RoHS (Apollo-C1) |
Not sure which to choose? See our full diesel heater guide →
Q1: What is a parking heater?
A parking heater is a fuel-burning heater that warms your vehicle without running the engine. It burns diesel or petrol in a sealed combustion chamber, then circulates warm air or heated coolant through your cabin. You get full heat in minutes — engine off, parked.
Q2: What’s the difference between a diesel air heater and a diesel water heater?
A diesel air heater burns fuel and blows warm air directly into the cabin. A diesel water heater burns fuel to heat coolant, which then warms your cabin through the vehicle’s existing heating system. Air heaters are simpler to install. Water heaters suit larger vehicles and can also preheat your engine.
Q3: Is a parking heater safe to use while sleeping?
Q4: How much fuel does a Vvkb parking heater use?
The Apollo-V1 (2.5KW) uses 0.136–0.252 L/hr depending on heat level. Running on low heat all night (8 hours) uses roughly 1–1.5 litres of diesel — far less than idling your engine.
Q5: What temperature can a Vvkb parking heater work in?
All Vvkb diesel air heaters are rated to -40°C. The Apollo-C1 diesel water heater is rated to -45°C. The Kyocera ceramic glow plug handles cold starts reliably at these temperatures.
Q6: Do I need a separate battery for a parking heater?
The heater runs on 12V DC (usable range roughly 10–15V) and uses minimal power once it is up to temperature. For overnight use, a dedicated leisure battery or second battery is recommended so you don’t drain your starter battery.
Q7: Can I install a parking heater myself?
Yes. Vvkb provides detailed installation guides and video tutorials. Diesel air heaters are the most DIY-friendly — you need to mount the unit, run a fuel line, connect ducting, and wire to a 12V power source. Water heaters require additional coolant connections. See our [parking heater installation guide] for full details.
Q8: What certifications do Vvkb parking heaters have?
Q9: What’s the difference between a parking heater and an engine block heater?
A parking heater heats your cabin — it keeps you warm while parked. An engine block heater heats your engine coolant to make cold-weather starts easier. They solve different problems. Some diesel water heaters (like the Apollo-C1) can do both simultaneously.
Q10: How long does a Vvkb parking heater last?