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Product details
Dometic TwinBoost 4000 Gas Combi Heater
Back from a cold hike and ready for a hot shower? The Dometic TwinBoost 4000 warms your living space and heats water from one compact gas unit. Its dual-chamber design keeps the air and water circuits separate and heats water directly, so you wait less for hot water and never have to warm the cabin just to get it. Ideal for motorhomes, campervans, caravans and off-grid leisure vehicles in every season.
Key features
- 2-in-1: heats cabin air and an integrated 10 litre hot water tank
- Dual-chamber technology with independent air and water circuits
- Very fast, direct water heating for better efficiency
- Heat water in summer without warming the cabin
- Smart, programmable control panel that saves favourite settings
- Cabin ventilation mode without running the heater
- Energy-efficient gas operation in a compact, integrated unit
Specifications
| Type | Gas combi heater (air and water) |
| Water tank | 10 L |
| Width x height x depth | 438 x 298 x 514 mm |
| Net weight | 17.30 kg (38.15 lb) |
Manuals
Our expert's take
Plan the flue and vent positions early in your build, as they decide where the unit can go, and have it fitted by a Gas Safe registered installer.
Steve IngleMarketing Director, Jerba Campervans
Frequently asked questions
What are the main specifications?
Width x height x depth: 438 x 298 x 514 mm. Net weight: 17.30 kg (38.15 lb). The full list is in the Specifications table in the product details.
Who should fit it?
Gas appliances must be installed by a qualified installer (Gas Safe registered in the UK) in line with the manufacturer's instructions, including flue and ventilation requirements.
How much is delivery and how long does it take?
Delivery is free to UK mainland addresses. Orders usually leave us within 1 to 3 working days and arrive within 2 to 5 working days in total. For the Scottish Highlands and Islands, the Isle of Wight and the Isles of Scilly, please contact us for a delivery quote before ordering. We do not currently deliver online orders to Northern Ireland, the Isle of Man or the Channel Islands.
Can I return it if I change my mind?
Yes. Email us within 100 days of receiving your order and we will arrange the return and cover the postage. Items must be unused and in like-new condition with all original packaging. Items that have been fitted or installed cannot be returned.
What warranty do I get?
You get the full manufacturer's warranty. If something goes wrong, email info@campernv.com or call 0330 122 7773 with your order number and we will help you with the claim.
Another question? Call 0330 122 7773, chat with us or email info@campernv.com.
Delivery, returns and warranty
Delivery
Free delivery to UK mainland addresses. Orders usually leave us within 1 to 3 working days and arrive within 2 to 5 working days. We do not currently deliver online orders to Northern Ireland, the Isle of Man or the Channel Islands. For the Scottish Highlands and Islands, the Isle of Wight and the Isles of Scilly, please contact us for a delivery quote before ordering.
100-day returns
Changed your mind? Email us within 100 days of receiving your order and we will arrange the return and cover the postage. Items must be unused, in like-new condition with all original packaging. Items that have been fitted or installed cannot be returned.
Warranty
We are an authorised retailer, so you get the full manufacturer's warranty. If something goes wrong, email info@campernv.com or call 0330 122 7773 with your order number and we will help you with the claim.
