CTM CT-10HN – 10,000 BTU Marine Air Conditioner 230V 50/60HZ NMEA 2000

CTM’s 10,000 BTU lineup covers a wide range of cabin sizes, and the CT-10HN is the 230V version built for boats with steady access to shore power or a generator running at that voltage. Like the rest of CTM’s N-series, it pairs titanium coils with NMEA 2000 connectivity, giving the captain direct control from the helm’s MFD instead of a dedicated wall panel — useful on boats that already run other systems through a networked display.

Why Choose the CTM CT-10HN

This CTM marine air conditioner is a documented replacement for the Dometic DTG10 (part 205162109), DTU10 (205162100/205162101), and equivalent Cruisair, Marine Air, Flagship, and Webasto 230V 10K units. If you’re swapping a failed system, that cross-reference usually means the existing ductwork and wiring carry over without major rework.

This model needs 230V power, so it’s not the right fit for boats limited to a 115V circuit — the CT-10N covers that case instead, with the same 10,000 BTU capacity.

What to Know Before Installing

• Pairs with the CTM PM500LH pump, matched to this unit’s water flow needs
• Fuse sizing must stay within the 10–15A range for safe operation under load
• Return air grille needs at least 100 sq in of clearance for proper airflow
• NMEA 2000 configuration is more straightforward with a technician familiar with your specific MFD brand