Webasto EHM1200W Electric Heat Module for A12/A18/A24/A36 Handlers – 1200W 230V

Boats running the larger A12, A18, A24, or A36 air handlers get matched heating capacity with the Webasto EHM1200W, a 1200-watt electric heat module built for handlers moving significantly more air than the compact A4-A9 range. This large cabin electric heat accessory installs in-line and connects directly to existing A-Series electronics.

At this output level, the module can genuinely offset a chiller being switched off entirely for extended periods, not just supplement heat during brief cold snaps — a meaningful difference for boats in climates with real seasonal temperature swings where a cabin might need standalone heating for days at a time.

Why Choose the Webasto EHM1200W

This unit carries Webasto’s standard 2-year warranty. Given the same compatibility contradiction pattern seen across this EHM product line, confirming the correct handler match (A12/A18/A24/A36, not A4) with Webasto or CTM before ordering is essential.

What to Know Before Installing

• Confirm compatibility against the A12, A18, A24, or A36 handler models specifically, not the A4, given the contradiction on this listing noted above
• A flow control valve must also be fitted when using this module — it does not work as a standalone installation
• Comes preinsulated to prevent exterior condensation, with 2 stainless steel mounting brackets included for wall mounting
• Current draw (5A) should be factored into your cabin’s electrical circuit planning alongside the air handler itself