Whale Underfloor Space Heater 4.3kW Gas and Electric ISO Return - AK1938

Whale Underfloor Space Heater 4.3kW Gas & Electric ISO Return  AK1938

Please note the lead time on this item is approx 6 weeks

The Whale Underfloor Space Heater 4.3kW Gas & Electric ISO Return — AK1938 is a compact blown-air underfloor heater designed for caravan and motorhome use. It combines gas and electric heating to deliver efficient warm air throughout a leisure vehicle via a ductwork system, making it ideal for year-round comfort. It is not suitable for static caravans or fixed buildings.

This model features a boost setting that automatically adjusts heat output based on internal temperature, helping maintain a comfortable environment with optimal efficiency.

Key Features

• 🔥 Dual Fuel Operation: Uses both gas and electric heating inputs — nominal 2.9 kW gas and 2.6 kW electric, with simultaneous use up to approx. 1.3 kW electric.

• ⚡ Boost Setting: Adjusts output in response to vehicle temperature for consistent warmth.

• 💨 Blown Air Output: Distributes warm air through ducting to multiple outlets around the interior.

• 📏 Compact Underfloor Design: Designed to install under the habitation floor, saving valuable living space.

• 🔄 Panel Compatibility: Works with Whale Space Heater Control Panel, Duo Control Panel, or iVan Touchscreen Control Panel.

• 🔁 Integrated Reset Button: Allows quick reset if the unit locks out.

Where It Fits

This Whale 4.3kW underfloor space heater is intended for installation under the floor of a caravan or motorhome habitation area as part of a ducted hot air heating system. It feeds warm air into ductwork that leads to vents positioned around the vehicle interior, providing even heat distribution throughout the living space.

⚠️ Installation must be done by a qualified gas engineer in accordance with manufacturer instructions and applicable safety standards.

Technical Specifications

• Brand: Whale

• Part Number: AK1938

• Type: Underfloor Blown Air Space Heater

• Fuel: Butane/Propane 28–30 mbar – CAT I3B/P (30)

• Nominal Gas Input: 2.9 kW

• Nominal Electric Input: 2.6 kW

• Combined Use: Can combine gas and up to ~1.3 kW electric simultaneously

• Voltage: 12 V DC control

• Weight: ~10.9 kg

• Dimensions: Approx. 185 mm H × 313.5 mm W × 820 mm D

• Colour: Silver

• Gas Consumption: ~220 g/hr

• Control Compatibility: Whale Space Heater, Duo, or iVan Touchscreen panels

Typical Uses

✔ Provides efficient heating for caravan and motorhome interiors
✔ Supports both gas and electric heat sources
✔ Ideal for underfloor ducted systems
✔ Maintains comfortable temperatures in cooler weather

Why Buy This Heater?

• ✔ Genuine OEM Whale quality designed for leisure vehicles

• ✔ Dual fuel flexibility — gas and electric operation

• ✔ Efficient and compact underfloor design

• ✔ Adjustable boost output based on temperature feedback

• ✔ Compatible with multiple Whale control panels

Installing the correct underfloor space heater ensures your caravan or motorhome remains warm and comfortable throughout the seasons while making efficient use of available heating options.

All work must be carried out by a competent person as defined by BS7671 PART2.