CTM AH-24HN Air Handler / Fan Coil – 24,000 BTU – 230V – NMEA 2000

At the top of CTM’s NMEA fan coil range, the AH-24HN delivers 24,000 BTU with 776 CFM of airflow — over twice the capacity of the AH-12HN and enough to serve the largest single cabin or open-plan area most vessels have. This is the capacity tier where a central chiller system genuinely starts outperforming a collection of individual split units for whole-boat comfort.

Owners running multiple air handlers across different zones benefit most from NMEA integration at this scale: with a 24,000 BTU unit likely paired with several smaller handlers elsewhere on the boat, having all of them report status and accept commands through one MFD interface turns what could be a fragmented multi-zone HVAC setup into something that actually feels unified.

Why Choose the CTM AH-24HN

As the largest air handler in CTM’s NMEA lineup, this unit carries the same standard 2-year warranty as the rest of the range, with the NMEA Starter Kit and sensor included at purchase rather than sold separately.

What to Know Before Installing

• Do not assume the “Features” heading label on this listing reflects the correct model — the specifications table itself is accurate for the AH-24HN
• Confirm the exact water connection specifications with CTM, following the same pattern noted across CTM’s AH-series listings
• Requires a matching CTM CW-series chiller sized for this capacity as the central cooling source
• At 39 lbs and a 7″ duct, plan for a larger installation footprint than CTM’s smaller air handlers