Mermaid M12 12000 BTU 220V Reverse Cycle Marine A/C

For boats wired to 220V rather than the more common US 230V standard, the Mermaid M12 Cool and Reverse Cycle delivers the same 12,000 BTU cooling and heating combination — sized for cruisers up to 32 feet or sailboats up to 34 feet, built with the same compact, hand-assembled construction found across Mermaid’s M12 line.

Why Choose the Mermaid M12 (220V)

This configuration exists specifically for boats wired to 220V rather than 230V or 110V, often on vessels built for or imported from markets outside the US. An alternative anchoring setup is available too — a Statpower 1,800-watt pure sine wave inverter paired with 450 amp-hours of battery can typically run this unit off-grid for about one night.

Confirm your vessel is genuinely wired for 220V rather than 230V before ordering, since the two aren’t always interchangeable depending on regional electrical conventions and existing onboard equipment.

What to Know Before Installing

• Confirm your electrical system’s actual voltage standard before ordering — 220V and 230V aren’t always interchangeable
• Pump is not included and must be sourced separately
• 4″ ducting with at least two 4″ round supply grilles is the minimum Mermaid recommends
• Air discharge position must be selected before ordering