Webasto EHM600W – BlueCool Serie A – Electric Heat Module 600W – 230V

Cabins that need heating independent of the main chiller’s operating mode — or extra heat output beyond what the air handler alone provides — get a straightforward solution in the Webasto EHM600W. This 600-watt electric heat module installs in-line into the air handler’s ductwork, connecting directly to A-Series electronics with no separate controls required.

The real value here shows up in mixed-use scenarios: a boat can run its central chiller in cooling mode for most cabins while one cabin runs its EHM for heat, or heat a cabin entirely with the chiller switched off overnight. That flexibility matters most for boats in variable climates, where different cabins genuinely need different treatment at the same time.

Why Choose the Webasto EHM600W

This unit carries Webasto’s standard 2-year warranty, and at under 5 lbs it’s a lightweight, low-cost way to add real heating flexibility to an existing A-Series installation. Given the minor part number discrepancy noted above, confirming the exact revision with Webasto or CTM before ordering is a reasonable precaution if you’re matching parts to an existing system.

What to Know Before Installing

• 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
• Compatible specifically with the A4 Compact Air Handler — confirm compatibility with other A-Series models before ordering
• Current draw (3A) should be factored into your cabin’s electrical circuit planning alongside the air handler itself