The 3.5kw Lightweight Heater is our second smallest and lightest hot water based heater after the 2.2kw Micro Heater, sacrificing a little weight for performance this unit can be used as a more powerful defrost heater and can also provide a little more cabin heat.
The heater uses a specially designed copper & brass heater core offering excellent heat transfer capabilities for its size, this is accomplished using a high flow core design, high fin density and ultra-thin wall tube.
A lightweight axial fan is used to draw air through the heater core and expel it through 4x 51mm (2") outlet nozzles. The Axial fans are at minimum 50% lighter and use 25% of the power over traditional centrifugal blowers.
The 3.5kw Lightweight Heater is ideal for use in vehicles for defrosting windscreens, or as a backup heating device for vehicles if you already have a heated windscreen. If you have a large windscreen you can hook up all 4 outlets to feed the windscreen, or in medium sized vehicles you can utilise two outlets for defrost and two for dash or foot well vents.
Typical weight savings over a production vehicle heating system can be in excess of 6kg.
||Imperial & Other
|Air Nozzle Size
||4x ∅ 51mm
||4x ∅ 2"
||60 dB (Max Fan Speed)
|Current Continuous / Startup
||1a / 1.5a
||Aluminium Enclosure with Black Powdercoat Finish
|Heater Core Design
||Copper & Brass Core with Copper Fins
The fan has no onboard speed control, the simplest way to operate this fan is to use an ON/OFF toggle or rocker switch. If you would like to adjust the fan speed please see our PWM fan controller.
Please ensure your supply is fused appropriately, it is recommended to use a 5a fuse and that your cable is rated higher than the fuse.