Heatport H4S 4kW Diesel Heater Kit – 12V / 24V

The Heatport H4S 4kW Diesel Heater Kit is available in both 12V and 24V versions, making it a powerful and reliable heating solution for larger caravans, RVs, cabins and off-grid spaces. Select your required voltage (12V or 24V) before ordering. The Heatport H4S 4kW Diesel Heater Kit is a reliable heating solution for larger caravans, RVs, cabins and off-grid spaces. Designed for strong heat output, efficient diesel use and dependable 12V/24V operation, it is a great option where a smaller heater may struggle to keep up. This kit is well suited to larger or poorly insulated spaces and gives you the core components needed for a standard installation. It is a practical choice for anyone wanting fast heat-up, controllable comfort and dependable off-grid warmth. 4kW Heat Output 12 or 24V Operation Full Install Kit Ideal for Large Caravans Off-Grid Ready Strong Heating Performance A great fit for larger caravans, RVs, cabins and other spaces that need stronger, faster heating. Efficient Diesel Operation Designed to deliver dependable warmth while maintaining efficient diesel fuel consumption. Controllable Comfort Thermostat control helps maintain a more comfortable interior temperature in changing conditions. Built for Off-Grid Use Reliable 12V performance makes this heater well suited to caravans, motorhomes and remote setups. Best For Large caravans RVs and motorhomes Cabins and tiny homes Older or poorly insulated spaces Off-grid winter heating Why Choose the Heatport H4S? Strong 4kW heating output for larger spaces Efficient diesel fuel consumption Thermostat temperature control for better comfort Reliable 12V0r 24V off-grid operation Good option where a smaller heater may not be enough Well suited to caravans, RVs, cabins and tiny homes What’s Included in the Kit Heatport H4S 4kW heater unit Controller Fuel pump Fuel line and filter Exhaust components Air intake components Ducting Outlet vents Mounting hardware Installation accessories Common Add-Ons Diesel fuel tank Extra ducting Additional outlet vent Extra installation accessories Good to Know Fuel tank options are usually selected separately This heater can suit split-ducting setups with vents at either end of a caravan Professional installation may be preferred depending on your setup If you are not sure whether the H4S is the right fit for your caravan, RV or cabin, feel free to get in touch and we can help point you in the right direction. <Frequently Asked Questions What is the difference between 12V and 24V? 12V suits most caravans, RVs and standard mobile battery systems. 24V is commonly used in trucks, buses, marine applications and larger battery bank setups. What size space is the H4S best suited to? The H4S 4kW heater is ideal for larger caravans, RVs, cabins, tiny homes and older or poorly insulated spaces needing stronger heat output. Does the kit include a fuel tank? Fuel tanks are commonly selected separately depending on available space, preferred capacity and installation layout. How much battery power do these heaters use? These diesel heaters have a higher power draw during startup while the glow plug ignites the fuel (approximately 8–10A for a few minutes on 12V models), then settle to a low running draw of around 0.8–2.5A depending on heat setting. They are very efficient and well suited to caravans, RVs, cabins and off-grid battery systems. Can I run two vents from this heater? Yes. The H4S is a popular option for split-ducting setups with vents at either end of a caravan, motorhome or cabin. Can I install this myself? DIY installation may be possible for experienced users, however professional installation is recommended for fuel, electrical and exhaust safety. Do you offer accessories for these diesel heaters? Yes — we can supply a full range of diesel heater accessories including tanks, ducting, vents, exhaust parts and other fittings. If you need extras for your setup, please contact us for advice and pricing.