Dometic TwinBoost Combi Boiler Heater image 1 Dometic TwinBoost Combi Boiler Heater image 2 Dometic TwinBoost Combi Boiler Heater image 3 Dometic TwinBoost Combi Boiler Heater image 4 Dometic TwinBoost Combi Boiler Heater image 5 Dometic TwinBoost Combi Boiler Heater image 6 Dometic TwinBoost Combi Boiler Heater image 7 Dometic TwinBoost Combi Boiler Heater image 8

Dometic TwinBoost 8000H Combi Boiler Heater

£2649.99 (inc VAT) 2815.00
BRAND : Dometic
Product Ref : 292389
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he Dometic TwinBoost 8000H is a high-performance hybrid gas and electric heater designed for motorhomes and caravans, offering a versatile solution for heating cabin air and water. The "H" in its name signifies its hybrid capability, allowing operation on gas, electric power, or a combination of both for maximum flexibility and efficiency. Its advanced dual-chamber design enables air and water to be heated directly and independently, allowing warm water access without heating the cabin – a key benefit during summer months.

With a powerful 7800 W cabin heating capacity, the Dometic TwinBoost 8000H ensures rapid and effective warmth even on the coldest days, delivering consistent comfort throughout your living space. The integrated 10-litre water tank offers an impressive 3800 W water heating performance when powered by electric, ensuring ultra-fast heat-up times for showers and washing needs. This independent functionality saves energy by allowing users to heat only what is required, making it an efficient option for both short breaks and longer journeys.

The Dometic TwinBoost 8000H is equipped with an intuitive smart control panel, offering customisable programming options to suit individual preferences. The easy-to-read display allows for seamless operation, while the ability to save favourite settings ensures quick and effortless setup. Four warm air outlets provide even heat distribution throughout the cabin, and the cabin vent mode enables ventilation without engaging the heater, further enhancing its energy efficiency. The smart chimney cover design and 3-in-1 safety system provide reliable and secure operation for peace of mind.

Ideal for motorhome and caravan owners who require dependable and flexible heating, the Dometic TwinBoost 8000H combines superior performance, energy-saving capabilities, and hybrid operation. Its powerful heating capacity, efficient water performance, and user-friendly design make it an excellent choice for year-round adventures.

This compact gas/electric heater has two separate heating chambers, one for cabin air and one for warm water. The unique dual-chamber design allows superior performance, as air and water are heated directly and independently of each other. No need to heat the cabin just to get warm water. Enjoy an impressive warm water performance in summer, or an ample 7800 W capacity to get your cabin warm on a chilly day!

Dometic TwinBoost 8000H Combi Boiler Heater Features


  • 4 warm air outlets
  • Intuitive control panel
  • Smart chimney cover design
  • 3-in-1 safety system
  • Easy-to-read display
  • 2-in-1 unit: heats up the cabin air and the 10 l hot water tank
  • Generous 3800 capacity for ultra-fast water heat-up when the full 1800 W electric power is used for water heating
  • Ample 7800 W capacity for cabin heating when the water heater is switched off and the full 1800 W electric power is used for air heating
  • Intuitive control with many programming options via the smart control panel
  • Independent air and water heating – save energy by only heating air and water when needed
  • Cabin vent mode – ventilation possible without operating air heater
  • Save your favourite settings for quick setup



4 warm air outlets
4 warm air outlets
Uniform heat distribution throughout the cabin
Intuitive control panel
Intuitive control panel
Easy operation and convenient programming
Smart chimney cover design
Smart chimney cover design
Repels water away from the wall
3-in-1 safety system
3-in-1 safety system
Integrating a frost, drain and over-pressure valve
Easy-to-read display
Easy-to-read display
Well-structured design
4 options available
4 options available
Ranging from the 4000 to 8000H





Energy-saving heater
Energy-saving heater
Dometic TwinBoost combo heaters make very economic use of energy. Instead of keeping the heater on all day, simply set the time for how long you want your water to be warm. And there's no need to heat the cabin air to get warm water either. Save energy and money while enhancing the comfort of your motorhome!
Get the water hot more quickly
Get the water hot more quickly
Dometic TwinBoost combo heaters feature a unique dual-chamber design, with separate heat chambers for cabin air and hot water. A unique benefit of the technology is that the water tank is heated directly – and not indirectly via the air heating as with other combo heaters available in the market. This results in a super-fast water heat-up with minimal energy loss.

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If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 30 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.

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