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The Whale Heat Air 6kW Gas & Electric Twin Underfloor Space Heater (SETSL7512A) is a powerful dual-fuel heating system designed for larger campervans, motorhomes and caravan conversions. Combining gas LPG heating with electric boost capability, this unit delivers up to 6 kW of warmth while preserving valuable interior space with its underfloor installation.
With intuitive controls, quiet performance and even heat distribution, it’s ideal for all-season travel — whether off-grid or on a hook-up.
Dual-fuel operation (gas + electric) — flexibility to heat using LPG off-grid or electric when hooked up.
High 6 kW heat output — strong performance for larger interiors or colder conditions.
Underfloor installation — maximises internal space within campervans and motorhomes.
Quiet, efficient heating — even heat distribution without disruptive noise.
Easy-to-use control panel — simple operation and temperature management.
Standard kit contents typically include:
1 × Gas & Electric Heater unit
1 × Control panel
1 × LIN cable and connector
1 × Combustion air intake flue
1 × Combustion air intake silencer
1 × Combustion air intake clamp
1 × Combustion air intake bracket (60 mm)
1 × Exhaust gas flue
1 × Exhaust gas flue clamp
3 × Exhaust gas flue brackets (40 mm, 60 mm, 80 mm)
1 × Exhaust gas flue end terminal bracket (100 mm)
1 × Heater Z-mounting bracket
1 × Heater isolation mounts
1 × Heater bracket screw kit
1 × Literature pack (installation & operating instructions, warranty card and service leaflet)
| Brand | Whale |
| Type | Blown Air Heaters |
| Voltage Description | 10.1V - 15.9V DC |
| Model | 6GTE |
| Height Description | 175mm |
| Width | 165 mm |
| Length | 559 mm |
| Weight | 8.7 kg |
| Fuel | Butane/Propane 30mbar + 3KW Electric |
| Heat Output | 6KW |
| Gas Consumption | 131, 342, 436 g/h |
| Maximum Air Flow | @ 0.5mbar: 220 m3/h |
Large campervans and van conversions
Motorhomes
Caravans with ducted heating systems
This heater’s 6kW combined gas + electric capability makes it well-suited for travellers who need strong, flexible heating in a variety of camping environments.
Must be installed and serviced by a qualified gas engineer to ensure safe operation and compliance with gas and electric installation standards (e.g. BS EN 1949).
Designed for underfloor mounting to free up internal living space
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