CTM CT-10DCN – 10,000 BTU Marine Air Conditioner 12V / 115V 50/60HZ NMEA 2000

Compact cabins and tight equipment spaces are where the CTM CT-10DCN tends to get specified — a 10,000 BTU marine air conditioner built around the same titanium coil and NMEA 2000 platform as CTM’s larger units, sized down for smaller boats, day cruisers, and auxiliary cabins that don’t need a bigger system’s footprint or power draw.

Why Choose the CTM CT-10DCN

This unit is a documented replacement for the Dometic DTG10 (part 205160109), DTU10 (205160100), ECD10 (207500310), and equivalent Cruisair, Marine Air, Flagship, and Webasto 115V 10K units — a common upgrade path for boats with aging 10,000 BTU systems that need a straightforward swap rather than a full re-engineering of the install.

One thing to verify directly with CTM or a dealer before purchase: this model’s listing references a 1200W inverter and 12V-related components, but the publicly available technical specifications only document 115V operation. If your installation depends specifically on native 12V DC performance figures, confirm those numbers with CTM before finalizing your electrical planning.

What to Know Before Installing

• Ducting downsizes from a typical 6″ OEM ring to 5″ on this unit — manageable with a clamp, but worth measuring beforehand
• Water connections are a standard 5/8″, matching most units it’s designed to replace
• The universal control board covers most existing thermostats, but older SMXir and Passport I/O controllers may need a firmware-compatible replacement
• Confirm actual 12V/inverter specifications directly with CTM before relying on this pathway for your installation planning