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The Whale Heat Air 5kW Gas & Electric Twin Underfloor Space Heater (SETSL5512A) combines the convenience of LPG gas heating with the flexibility of electric heat boost — ideal for campervans, motorhomes and caravan conversions. With underfloor installation, this compact dual-fuel heater saves interior space while providing powerful, efficient warmth in all seasons.
Dual-fuel operation (gas + electric) — heat regardless of campsite hook-up or off-grid conditions.
5kW heat capacity — strong performance for larger interiors.
Underfloor installation — frees up valuable living and storage space.
Quiet, even heat distribution — comfortable warmth throughout the vehicle.
Easy-to-use controls — intuitive panel for straightforward operation.
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 cards, service leaflet, questionnaire)
| Brand | Whale |
| Type | Blown Air Heaters |
| Voltage Description | 10.1V - 15.9V DC |
| Model | 5GTE |
| Height Description | 175mm |
| Width | 165 mm |
| Length | 559 mm |
| Weight | 8.7 kg |
| Fuel | Butane/Propane 30mbar + 3KW Electric |
| Heat Output | 5KW |
| Gas Consumption | 109, 233, 342 g/h |
| Maximum Air Flow | @ 0.5mbar: 220 m3/h |
Campervans & van conversions
Motorhomes
Caravans with ducted heating systems
The dual-fuel capability means you can use gas heating off-grid and switch to electric boost (when on hook-up) to maximise comfort.
Must be installed and serviced by a qualified gas engineer in line with relevant regulations such as BS EN 1949.
Underfloor mounting preserves internal space and helps ducting layout flexibility.
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