CTM CT-6N – 6,000 BTU Marine Air Conditioner 115V 50/60HZ NMEA 2000

Not every small-cabin install has 230V available, and CTM’s CT-6N fills that gap with a 115V version of the same 6,000 BTU platform — titanium coils, NMEA 2000 support, and the same compact footprint that makes the 6K series a common choice for tight spaces like guest berths, heads, and small salons.

Is the CT-6N Right for Your Boat?

This model exists specifically for boats without 230V power, running on standard 115V dockside or generator circuits instead. If 230V is available on your boat, the CT-6HN pulls less current for the same 6,000 BTU output and is generally the more efficient electrical match.

This unit is best suited to small, enclosed spaces — a single cabin, head, or berth — rather than open salons or larger staterooms that need more cooling capacity than 6,000 BTU provides.

What to Know Before Installing

• Confirm exact current draw and fuse requirements with CTM or a dealer before finalizing your electrical plan, since precise 115V figures for this specific N-variant weren’t available in the sources reviewed
• Ducting steps down to 4″, smaller than the 5″ or 6″ found on many OEM units it might replace
• Water connections are a standard 5/8″ fitting
• Universal control board compatibility should be double-checked against older SMXir or Passport I/O firmware versions