Whale Heat Air Underfloor Space Heaters
When you are out exploring in your caravan, motorhome, or campervan, every square inch of interior space counts.Traditional space heaters hog valuable floor area, eat into your storage bunks, or limit your interior design layout.
More Living Space. Fast, Efficient Warmth.
The Whale Heat Air Underfloor Space Heater series completely redefines leisure vehicle heating by shifting the entire unit externally beneath the chassis floor. This lightweight, low-profile blown-air system delivers rapid, evenly distributed warmth throughout your living space while leaving your interior design options completely wide open.
Why Choose Whale Heat Air?
When designing or upgrading a leisure vehicle, your choice of heating system directly impacts your floor plan, storage capacity, and overall comfort. While traditional heaters occupy prime interior real estate, the Whale Heat Air system completely rethinks the layout by shifting the heavy lifting outside.
Here is why professional converters, and manufacturers consistently choose Whale Heat Air systems.
6 Reasons To Fall In Love With Whale Heat Air
Reclaim Your Internal Storage Bunks
Whale Heat Air units mount securely underneath your vehicle chassis, freeing up that valuable internal space for leisure batteries, fresh water tanks, or extra adventure gear.
Complete Layout Freedom
Because the heater doesn’t need to sit inside your living area, your structural design isn’t restricted by a massive technical cupboard.
Highly Efficient Blown-Air Performance
Whale uses advanced, high-efficiency fan technology that circulates warm air through 60mm ducting within minutes of startup.
Whisper-Quiet Night Running
Whale systems are engineered with balanced brushless fans and supplied with custom combustion intake silencers as standard.
Genuine Dual-Fuel Flexibility
With Whale’s dual-fuel options, you aren’t bound to a single energy source.
- Off-Grid: Run purely on LPG (Propane/Butane),
- On Hook-up: Switch completely to 230V mains electric,
- Winter Boost(4kW Model): Combine both Gas and Electric simultaneously.
Rugged, All-Weather Reliability
Designed and built in the UK specifically for the demanding leisure market, the external casing is fully weather-sealed and constructed from high-grade materials to withstand road spray, dirt, and brutal winter temperatures.
Recent Reviews
Choose Your Size: The 2kW Compact vs. The 4kW Powerhouse
Whale designs this underfloor range in two distinct capacities to match your specific vehicle volume, insulation profile, and cold-weather demands.
Whale Heat Air 2kW (The Compact All-Rounder)
Designed specifically for micro-campers, small-to-medium panel van conversions (such as a VW Transporter or Ford Transit Custom), and smaller caravans. It packs high thermal efficiency into a tiny footprint, making it ideal for standard three-season camping.
Whale Heat Air 4kW (The All-Weather Powerhouse)
Engineered for larger panel vans (such as a long-wheelbase Fiat Ducato, Mercedes Sprinter, or Peugeot Boxer), large coachbuilt motorhomes, and multi-berth caravans. Featuring advanced multi-ducting capabilities, it rapidly brings larger interior volumes up to residential comfort levels even in freezing winter conditions.
Ready To Talk?
If you’d like to discuss the possibility of fitting a Whale Heat Air please get in touch for a chat.
FAQs: Whale Heat Air Heater
Can the heater be used while the vehicle is in motion?
Yes. Whale Heat Air systems are fully approved for use while driving, provided your vehicle is equipped with a safety-regulated gas regulator (such as a Truma MonoControl or DuoControl) that features a crash sensor to cut off gas flow in an emergency.
Does the external underfloor installation put the heater at risk of freezing?
No. The internal plumbing and burner assembly are fully protected by a rugged, weather-sealed casing designed to withstand road spray, dirt, and sub-zero temperatures. Because it only circulates dry air (not water like a wet combi boiler), there is no risk of internal freezing or pipe bursts when the system is off.
What size gas bottles do I need to run the system off-grid?
The system runs efficiently on both Propane and Butane (LPG). For standard off-grid trips, a standard 6kg or 11kg bottle (or a refillable underslung LPG tank) is ideal. On low setting, the heater consumes just 109 grams of gas per hour, meaning a single 6kg bottle can provide up to 55 hours of continuous runtime.
Can I run the 230V electric heating without turning the gas on?
Yes (on Dual-Fuel models). If you are plugged into a 230V mains hook-up at a campsite, you can operate the heater entirely on electricity. The control panel lets you select between 500W, 1kW, or 2kW power settings, allowing you to match the system to the campsite’s available amperage without tripping their breakers.
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