Mermaid M16 16500 BTU 230V Cool Only FMS Marine A/C

Boats over 40 feet that don’t need onboard heating can skip the added complexity of a reversing valve with the Mermaid M16 Cool Only in 230V trim — same 16,500 BTU cooling capacity as the reverse cycle version, built on the same heavy-duty 304-18 gauge stainless steel platform, just without the heating function.

Why Choose the Mermaid M16 Cool Only

Skipping the reversing valve trims 10 lbs off the unit compared to the reverse cycle version (60 lbs versus 70 lbs) and draws slightly less current — 12A versus 13.5A on the equivalent 110V comparison — since there’s no heat-mode mechanism to power. For boats cruising exclusively in warm climates, that’s a real advantage in fewer components to maintain.

If your cruising plans ever extend into cooler weather, the Reverse Cycle version of the M16 covers that instead, at the same footprint and installation requirements — worth considering even if you don’t need heat immediately, since retrofitting later means replacing the whole unit.

What to Know Before Installing

• Pump is not included and must be sourced separately
• Plan for three discharge points: one 8″x6″ grill within 6 feet of the unit, plus two 4″ round vents
• Since this unit has no heating function, confirm it matches your climate needs before ordering
• All three air discharge positions (right, left, top) are available on this model