You get full cabin heat in under 10 minutes — no engine idling, no propane refills, no generator noise through the night. The Vvkb Apollo runs on your existing diesel tank and draws under 26W from your 12V or 24V battery. Available in 2.5KW and 5KW, E-mark, CE, RoHS & FCC certified, with free shipping.
Which Size Is Right for You: 2.5KW or 5KW
The 2.5KW Apollo-V1 puts out 8,500 BTU — right for trucks, cargo vans, smaller boats, and single-room setups up to around 150 sq ft. The 5KW Apollo-V2 delivers 16,000 BTU and handles larger RVs, motorhomes, and campervan builds up to around 300 sq ft. If you're not sure, go with the 5KW — it runs at five adjustable heat levels down to 1.4KW, so you're not burning excess fuel in mild weather.
On voltage: pick 12V for most RVs, campervans, and boats. Pick 24V if you're running a diesel truck or a commercial vehicle with a 24V electrical system.
What Makes This Heater Different from $100 Alternatives
Pick up a cheap diesel heater's heat exchanger and it weighs 1.2 to 1.5kg. Pick up Vvkb's 5KW version and it weighs 2.1kg — 40% heavier. That extra weight is wall thickness, and wall thickness is what stands between your cabin air and the exhaust.
Diesel combustion produces sulfuric acid as a byproduct. On a thin-walled heat exchanger, that acid corrodes through the aluminum — and when it does, exhaust gases enter your heating circuit. Vvkb casts with a 1,000-ton press versus the 400–500-ton machines most budget brands use, producing a denser casting with far fewer voids.
The combustion chamber inside is 2520 stainless steel. It won't deform under sustained high heat, which keeps combustion consistent and fuel consumption predictable across years of use.
Ignition comes from a Japanese Kyocera ceramic glow plug — the same component used in professional diesel equipment. You get a reliable cold start at -40°F (-40°C), not just on day one, but after years of seasonal use.
Built to Work Where Other Heaters Fail
Most diesel heaters struggle to start below -4°F (-20°C). The Vvkb Apollo starts reliably at -40°F (-40°C) — the same temperature where many heaters simply quit. You get heat on demand regardless of how cold it got overnight.
At high altitude, thinner air throws off the fuel-to-air ratio — most heaters can't compensate, leading to carbon buildup, fault codes, and shutdowns. The Vvkb Apollo's ECU adjusts the air/fuel ratio automatically up to 11,483 ft (3,500 m) with no manual intervention needed. That covers most of North America's mountain ranges, ski resorts, and high-altitude campgrounds.
Five heat levels let you match output to conditions — from 1.4KW Ultra Low on a mild night to 4.7KW Boost when temperatures drop fast. At Ultra Low, the 5KW model draws just 9.2W and burns 0.144 L/hr — barely a drain on your battery or tank. Crank it to Boost and you're pushing 16,000 BTU into your space.
Certifications: E-mark, CE, RoHS & FCC
The E-mark is the hardest certification to get in this category — it requires independent testing and approval for installation in vehicles across the EU. Most budget diesel heaters don't carry it. Vvkb does.
CE covers overall product safety for the European market. RoHS confirms no restricted hazardous substances are used in the heater's construction. FCC certification means the LCD controller and wireless remote won't interfere with your vehicle's electronics.
Together, these certifications mean independent testing bodies — not just Vvkb — have verified this heater is safe to run in an enclosed vehicle. That's not something you get from a $100 heater on a marketplace listing.
Ready to order? Select your size and voltage at the top of this page →
Technical Specifications
Full specs for both models below. Operating data reflects the Apollo-V2 (5KW) at 12V — the most common configuration.
| Specification | Apollo-V1 (2.5KW) | Apollo-V2 (5KW) |
|---|---|---|
| Working Voltage | 9V–15V DC | |
| Output Power | 2,500W | 5,000W |
| Output Heat | 8,500 BTU | 16,000 BTU |
| Fuel Type | Diesel | |
| Dimensions | 380 × 140 × 138mm (15 × 5.5 × 5.43 in) | |
| Max Power Consumption | ≤26W | |
| Max Fuel Consumption | ≤0.475 L/hr (0.126 gal/hr) | |
| Weight | 5.7kg (12.6 lb) | |
| Combustion Chamber | 2520 stainless steel — resists deformation under sustained high heat | |
| Heat Exchanger | Die-cast ADC12 aluminum — 1,000-ton press, slag-removed casting | |
| Outer Housing | Engineering-grade plastic — lightweight and impact-resistant | |
| Ignition | Japanese Kyocera ceramic glow plug | |
| Applicable Vehicles | RVs, trucks, vans, boats, cars, off-road vehicles | |
| Certifications | E-mark, CE, RoHS, FCC | |
Apollo-V2 (5KW) Operating Data — 12V
| Mode | Heat Output (KW / BTU) | Fuel Consumption (L/hr / gal/hr) | Current at 12V (A) | Power Input (W) |
|---|---|---|---|---|
| Boost | 4.7 / 16,000 | 0.475 / 0.126 | 2.2 | 26.1 |
| High | 4.0 / 13,600 | 0.403 / 0.107 | 1.93 | 23.1 |
| Medium | 3.1 / 10,700 | 0.315 / 0.083 | 1.57 | 18.8 |
| Low | 2.0 / 6,800 | 0.201 / 0.053 | 0.93 | 11.2 |
| Ultra Low | 1.4 / 4,900 | 0.144 / 0.036 | 0.77 | 9.2 |
| Shutdown | — | — | — | — |
Package List
| Item | Apollo-V1 (2.5KW) | Apollo-V2 (5KW) |
|---|---|---|
| Diesel heater unit | 1 | 1 |
| LCD digital controller | 1 | 1 |
| Remote control | 1 | 1 |
| Fuel pump | 1 | 1 |
| Exhaust muffler | 1 | 1 |
| Hot air outlet pipe | Ø60mm × 60cm | Ø75mm × 60cm |
| Exhaust pipe | Ø25mm × 60cm | Ø25mm × 60cm |
| Burning air intake pipe | 80cm + 20cm | 80cm + 20cm |
| Air vent case | 1 | 1 |
| Fuel pump bracket | 1 | 1 |
| Air intake muffler | 1 | 1 |
| Fuel filter | 1 | 1 |
| Main cable | 6m | 6m |
| Fuel line hose | 6 | 6 |
| Rubber hose | 1 | 1 |
| Air inlet cover | 1 | 1 |
| Fuel standpipe | 10 | 10 |
| Nylon cable ties | 1 pack | 1 pack |
| Seal gasket | Ø60–80mm × 2 | Ø70–90mm × 2 |
| Clamps for air outlet | Ø9–11mm × 12 | Ø9–11mm × 12 |
| Nuts and screws | 17 pcs | 17 pcs |
| Mount plate | 1 | 1 |
| Clamps for exhaust pipe | 2 | 2 |
| Clamps for air intake pipe | 2 | 2 |
Frequently Asked Questions
What's the difference between the Apollo-V1 (2.5KW) and Apollo-V2 (5KW)?
The Apollo-V1 puts out up to 8,500 BTU — right for trucks, cargo vans, smaller boats, and spaces up to around 150 sq ft. The Apollo-V2 delivers up to 16,000 BTU and handles larger RVs, motorhomes, and campervan builds up to around 300 sq ft. Both models run the same five heat levels and the same Kyocera ceramic glow plug.
Can this heater work at high altitudes?
Yes. The ECU automatically adjusts the air/fuel ratio up to 11,483 ft (3,500 m) with no manual tuning needed. Above that, combustion efficiency starts to drop. For use above 11,483 ft (3,500 m), contact Vvkb directly about the custom high-altitude version rated to 18,045 ft (5,500 m).
Is this diesel heater safe to use inside an RV or van?
Yes. The combustion circuit is completely sealed from your cabin air. Fuel burns inside the combustion chamber and exhaust exits through a dedicated pipe to the outside — your cabin air never contacts combustion gases. The die-cast ADC12 aluminum heat exchanger keeps those two circuits physically separate at all times.
What's included in the kit?
The kit includes the heater unit, LCD controller, and wireless remote. Standard installation hardware is also included in the box. Check the product images for the full accessory list.
How loud is the Vvkb Apollo diesel heater?
The Vvkb Apollo runs at around 50dB during normal operation — quieter than a typical conversation. The quiet fuel pump and sealed combustion chamber keep noise low even at Boost. Most users find it easy to sleep through.
Shipping & Warranty
Shipping
Your order ships within 3 business days. We fulfill from warehouses in the US, Canada, Australia, and Europe — so most orders arrive faster than you'd expect. If your size or voltage is temporarily out of stock in your region, we ship directly from our factory in China.
Shipping is free on all orders, via UPS or FedEx. Estimated delivery: 7–12 business days.
Warranty
Every Vvkb Apollo heater comes with a 1-year warranty. If any component fails within the first year, we ship you the replacement part for free — no need to send the unit back.
Want 2 full years of coverage? Add the 2-Year Extended Warranty →
How the Apollo Diesel Heater Works — Internal Components Explained
See the heat exchanger wall thickness, Kyocera ceramic glow plug, and sealed combustion chamber up close. This is exactly what separates the Apollo from $100 alternatives.
How to Use the Vvkb LCD Control Panel
Walk through every function on the LCD controller — setting temperature, switching heat levels, and reading the display — before your heater even arrives.
3 Installation Details You Don't Want to Miss
Three installation steps most people get wrong, and how to avoid the problems they cause. Watch this before you start.
