{"product_id":"gasoline-hot-water-system-apollo-gh5","title":"Vvkb Apollo GH5 Gasoline Hot Water System — 5KW 12V","description":"\u003cul\u003e\n\u003cli\u003eThree heating systems in one unit — hot showers, radiant floor heat, and cabin air, all from your existing gasoline tank.\u003c\/li\u003e\n\u003cli\u003eWhen you drive, your engine's waste heat warms your water for free. No extra fuel burned.\u003c\/li\u003e\n\u003cli\u003eAt 5KW, the GH5 heats your water and cabin with the engine completely off — no shore power, no engine idling.\u003c\/li\u003e\n\u003cli\u003eYour gasoline tank is already on the vehicle. Connect the GH5 directly — no diesel tank, no second fuel type.\u003c\/li\u003e\n\u003cli\u003eCE certified. Ships in 7 business days.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThree Functions. One Fuel. No Diesel.\u003c\/h2\u003e\n\u003cp\u003eThe Apollo GH5 replaces three separate systems — hot water, floor heating, and cabin air — with one unit running on your existing gasoline supply.\u003c\/p\u003e\n\u003cp\u003eMost RVs and campervans carry at least two heating systems: one for the cabin and one for hot water. Each one adds weight, complexity, and usually a propane tank or diesel supply you have to manage separately. The GH5 eliminates all of that.\u003c\/p\u003e\n\u003cp\u003eYou connect a single fuel line to your gasoline tank. The GH5 does the rest — hot showers, warm floors, and cabin air, all from the same fuel your engine already burns.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHot Water. Warm Floors. Heated Cabin.\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1623\/1847\/files\/Apollo-GH5Five-ZoneHeating_HotWater_FloorHeat_CabinAir_Windshield_EnginePreheat.jpg?v=1777512516\" alt=\"Vvkb Apollo-GH5 heating zones — domestic hot water, radiant floor heating, cabin air heating, windshield defrost, and engine preheating shown in RV cross-section\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe GH5 runs one hydronic circuit that feeds three outputs simultaneously — hot water storage, floor heating pipes, and a cabin fan coil. You get a complete living environment from a single unit.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHot Water for Shower and Taps\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eConnect the GH5 to a hot water storage tank — 10–20L for solo or couple use, 20–30L for families or longer trips. The tank is not included, so you choose the size that fits your build. Once heated, water stays hot at your showerhead and faucet without running the engine.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRadiant Floor Heating\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eHot coolant circulates through your floor pipe circuit. Heat rises from the floor up — the most comfortable and even way to warm a cabin, with no blower noise.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCabin Air Heating\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe included 1.7KW fan coil unit pushes warm air through your living space. Paired with the Controller Pro, you set the temperature and walk away.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eYour Engine Heats Your Water for Free\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"Apollo-GH5 gasoline hot water system diagram — heater connected to gasoline tank, stainless steel water tank, fan coil unit, showers, taps, and vehicle engine coolant circuit\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1623\/1847\/files\/Apollo-GH5SystemDiagram_HotWater_AirHeating_andEngineHeatRecovery.jpg?v=1777512516\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe GH5 connects directly into your vehicle's engine cooling circuit. While the engine runs, waste heat that would otherwise be lost through the radiator flows through the GH5's heat exchanger instead — warming your water storage tank at zero extra fuel cost.\u003c\/p\u003e\n\u003cp\u003eDrive for 30 minutes and your water tank is already warm by the time you park. The GH5 brings it to full temperature and holds it there while you're stopped.\u003c\/p\u003e\n\u003cp\u003eWhen the engine is off, the GH5 switches automatically to active combustion — burning gasoline from your existing tank to maintain heat. No manual switching, no separate controls.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eBuilt for Gasoline — Your Tank Is Already on the Vehicle\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMost RV heaters run on diesel. If your vehicle runs on gasoline, that means a second fuel tank bolted somewhere on your build — one more thing to fill, one more thing to leak, one more thing to explain at the border.\u003c\/p\u003e\n\u003cp\u003eThe GH5 connects directly to your existing gasoline tank. No diesel supply, no propane cylinder, no extra weight.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy you can't just run a diesel heater on gasoline\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eGasoline and diesel burn differently — the air-to-fuel ratio, ignition timing, and combustion speed are completely different. Some manufacturers sell modified diesel heaters as gasoline versions. The result is lower output, longer heat-up times, and carbon buildup. The GH5 is calibrated specifically for gasoline combustion from the ground up — same 5KW output, same reliability.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeat Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5KW (17,000 BTU\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGasoline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V DC (9V–16V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.30–0.61 L\/hr (partial to full power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18–28W (heater unit only, excludes fan coil and pump)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFan Coil Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.7KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°F to +140°F (-40°C to +60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal System Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Unit Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e214 × 106 × 168mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDelivery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShips in 7 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1623\/1847\/files\/Apollo-GH5CompleteKit_EverythingIncluded.jpg?v=1777512516\" alt=\"Apollo-GH5 gasoline hot water system complete kit — pre-assembled heater unit, stainless steel tank, fuel pump, wiring harness, exhaust pipe, expansion tank, brass fittings, and mounting hardware\"\u003e\u003c\/p\u003e\n\u003cp\u003eEverything you need to connect the GH5 to your vehicle is included. You only need to source a hot water storage tank (10–30L, your choice of size).\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApollo-GH5 main unit — heater pre-mounted to stainless steel heat exchanger tank\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.7KW fan coil unit\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Pro with remote\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring harness\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion tank\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn\/off switch\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless steel flexible exhaust pipe\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel pump\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel filter\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel line\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoolant hoses\u003c\/td\u003e\n\u003ctd\u003e1 set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrass fittings\u003c\/td\u003e\n\u003ctd\u003e1 set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBall valve\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHose clamps\u003c\/td\u003e\n\u003ctd\u003e1 set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Hot water storage tank not included. We recommend 10–20L for 1–2 people, 20–30L for 3–4 people.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe GH5 arrives with the heater pre-mounted to the heat exchanger tank — the most complex part of the assembly is already done. A typical installation involves four connections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 1 — Mount the main unit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose a location with access to your fuel line, engine bay, and living space. The heat exchanger tank has screw holes on the base — find a solid mounting surface and bolt it directly into position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 2 — Connect to the gasoline tank\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRun the fuel line from your existing gasoline tank to the GH5 fuel pump. No separate fuel tank required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 3 — Connect to the engine cooling circuit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePlumb the GH5 into your vehicle's engine coolant loop using the included hoses and brass fittings. Before running the system, make sure all air is purged from the heater hoses and the heater interior — trapped air will prevent proper circulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 4 — Connect the outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRun coolant lines to your hot water storage tank, floor heating circuit, and fan coil unit. Wire the Controller Pro to the battery and on\/off switch.\u003c\/p\u003e\n\u003cp\u003eThe included system diagram covers all connection points. If you are not experienced with hydronic heating systems, professional installation is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCE Certified and Built-In Safety Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Apollo-GH5 is CE certified — tested and compliant for use in vehicles and marine applications across Europe and North America.\u003c\/p\u003e\n\u003cp\u003eThree automatic protection systems run in the background whenever the GH5 is operating:No manual intervention required. If a fault occurs, the Controller Pro displays an error code so you know exactly what to address.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverheat protection\u003c\/strong\u003e — if coolant temperature exceeds the safe threshold, the GH5 shuts down automatically\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow voltage protection\u003c\/strong\u003e — the system monitors battery voltage and cuts power before your battery is damaged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition lockout\u003c\/strong\u003e — if the GH5 fails to ignite twice in succession, it locks out and stops attempting. This prevents unburned fuel from accumulating in the combustion chamber\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat's the difference between the Apollo-GH5 and the Apollo-GC5?\u003c\/h3\u003e\n\u003cp\u003eThe GC5 is a gasoline water heater — it heats your engine coolant and cabin, but does not supply domestic hot water for showers or taps. The GH5 is a complete integrated system: it does everything the GC5 does, and adds domestic hot water, radiant floor heating, and a 1.7KW fan coil for cabin air. If you need a shower and warm floors, the GH5 is the right choice. If you only need engine preheating and cabin heat, the GC5 is simpler and lower cost.\u003c\/p\u003e\n\u003ch3\u003eCan I use the GH5 in a diesel vehicle?\u003c\/h3\u003e\n\u003cp\u003eThe GH5 is calibrated specifically for gasoline combustion — the air-to-fuel ratio and ignition system are set for gasoline, not diesel. If your vehicle runs on diesel, we recommend the \u003ca href=\"https:\/\/www.rvheater.com\/products\/diesel-water-heater\"\u003eApollo diesel hot water system\u003c\/a\u003e instead. Using the wrong fuel type will reduce output and cause carbon buildup.\u003c\/p\u003e\n\u003ch3\u003eDoes engine waste heat recovery work automatically while driving?\u003c\/h3\u003e\n\u003cp\u003eYes. The GH5 connects directly into your engine's cooling circuit. While the engine runs, waste heat flows through the GH5 heat exchanger and warms your water storage tank automatically — no manual switching required. When you turn the engine off, the GH5 switches to active combustion mode and continues heating from your gasoline tank. The transition is seamless.\u003c\/p\u003e\n\u003ch3\u003eIs the hot water storage tank included — and what size do I need?\u003c\/h3\u003e\n\u003cp\u003eThe hot water storage tank is not included. You source your own so you can choose the capacity that fits your build and usage. For 1–2 people, a 10–20L (2.6–5.3 gal) tank is sufficient for daily showers and dishwashing. For 3–4 people or extended trips, 20–30L (5.3–7.9 gal) is more comfortable. Use a single-coil calorifier tank designed for hydronic systems.\u003c\/p\u003e\n\u003ch3\u003eCan it heat water and the cabin at the same time?\u003c\/h3\u003e\n\u003cp\u003eYes. The GH5 runs a single hydronic circuit that feeds all three outputs — hot water tank, floor heating pipes, and fan coil — simultaneously. You do not need to choose between hot water and cabin heat. All three can run together from the same heat source.\u003c\/p\u003e\n\u003ch3\u003eHow loud is the GH5?\u003c\/h3\u003e\n\u003cp\u003eThe GH5 is a hydronic system — heat is transferred through liquid coolant, not blown air. The combustion unit itself runs quietly in the background. The 1.7KW fan coil is the main source of airflow noise, and it can be controlled independently. Overall, a hydronic system is significantly quieter than a forced-air heater at equivalent heat output.\u003c\/p\u003e\n\u003ch3\u003eDoes the GH5 work at high altitude?\u003c\/h3\u003e\n\u003cp\u003eYes. Vvkb heaters automatically adjust the air-to-fuel ratio as altitude increases, maintaining reliable combustion up to 11,483ft (3,500m). Above that elevation, performance will gradually decrease as available oxygen drops. For most RV and van destinations in North America and Europe, 11,483ft covers virtually all accessible roads and campgrounds.\u003c\/p\u003e\n\u003ch3\u003eWhat vehicles is the GH5 compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe GH5 works with any gasoline or petrol-powered vehicle that has an accessible fuel tank and engine cooling circuit — including RVs, campervans, trucks, boats, and motorhomes. It is also compatible with gasoline-electric hybrid vehicles. The system connects to your existing gasoline tank, so no modifications to the fuel supply are required beyond running a fuel line to the GH5 pump.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIs it safe to run while sleeping — is there a CO risk?\u003c\/h3\u003e\n\u003cp\u003eThe GH5 uses a sealed combustion system. Combustion air is drawn from outside the vehicle through a dedicated intake, and exhaust gases are discharged outside through the exhaust pipe. Cabin air never mixes with the combustion process. Three automatic safety systems — overheat protection, low voltage cutoff, and ignition lockout — run continuously. As with any fuel-burning appliance in an enclosed space, installing a CO detector is strongly recommended as standard practice.\u003c\/p\u003e\n\u003ch3\u003eHow often does the GH5 need maintenance?\u003c\/h3\u003e\n\u003cp\u003eAn annual inspection is recommended — check the glow plug, clean the combustion chamber, and inspect fuel and coolant connections. Gasoline burns slightly faster than diesel and can leave more residue in the combustion chamber over time, so keeping up with annual servicing will extend the life of the unit significantly. The Controller Pro displays error codes if something needs attention between service intervals.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #0b0069; padding: 40px 32px; text-align: center; margin-top: 40px;\"\u003e\n\u003ch2 style=\"color: #ffffff; font-size: 24px; margin-bottom: 12px;\"\u003eOne System. Every Heat You Need.\u003c\/h2\u003e\n\u003cp style=\"color: #ffffff; font-size: 16px; margin-bottom: 8px;\"\u003e5KW · 3-in-1 · Gasoline · CE Certified · Ships in 7 Business Days\u003c\/p\u003e\n\u003cp style=\"color: #ffffff; font-size: 16px; margin-bottom: 28px;\"\u003eHot water, warm floors, and cabin heat — all from your existing gasoline tank.\u003c\/p\u003e\n\u003ca href=\"#product-form\" style=\"display: inline-block; background-color: #b82c2b; color: #ffffff; font-size: 16px; font-weight: bold; padding: 14px 36px; text-decoration: none; margin-right: 12px;\"\u003eADD TO CART →\u003c\/a\u003e \u003ca href=\"https:\/\/www.rvheater.com\/products\/gasoline-water-heater-apollo-gc5\" style=\"display: inline-block; border: 2px solid #ffffff; color: #ffffff; font-size: 16px; font-weight: bold; padding: 14px 36px; text-decoration: none;\"\u003eCOMPARE WITH GC5 →\u003c\/a\u003e\n\u003c\/div\u003e","brand":"vvkb","offers":[{"title":"Default Title","offer_id":42385485103186,"sku":null,"price":1999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1623\/1847\/files\/Apollo-GH5GasolineHotWaterSystem_FrontView.jpg?v=1777512517","url":"https:\/\/www.rvheater.com\/products\/gasoline-hot-water-system-apollo-gh5","provider":"Vvkb","version":"1.0","type":"link"}