CTM AH-12HN Air Handler / Fan Coil – 12,000 BTU – 230V – NMEA 2000

Larger cabins on NMEA 2000-networked boats needing 12,000 BTU of central chiller cooling get network-integrated control with the CTM AH-12HN, which pairs standard fan coil cooling with direct MFD compatibility through Garmin Empirbus, OneHelm, and Raymarine YachtSense. At 347 CFM, it moves noticeably more air than CTM’s 6,000 and 8,000 BTU siblings while staying in the same single-blower design family.

What makes NMEA integration worth the added cost at this capacity specifically is zone management: a boat running several 12,000 BTU handlers across different cabins can monitor and adjust all of them from one chartplotter screen, rather than walking to each cabin’s local display — genuinely useful once a vessel has more than two or three independently zoned spaces.

Why Choose the CTM AH-12HN

Backed by CTM’s standard 2-year warranty, this unit bundles the NMEA Starter Kit and temperature/humidity sensor directly into the purchase, so there’s no separate accessory order needed to get network integration running.

What to Know Before Installing

• Confirm the exact water connection specifications with CTM given the terminology noted above
• Requires a matching CTM CW-series chiller as the central cooling source
• If replacing a Dometic AU-HV air handler, waterline connections need adapting from 1/2″ to 3/4″ — adapter included
• Some older SMXir or Passport I/O controllers may need a firmware update to work with CTM’s universal control board