Marine AC control boards fail from salt-air corrosion, voltage spikes, and water intrusion. We diagnose Cruisair SMX, Dometic Passport, Webasto, Mabru, and Aqua-Air boards and swap them dockside — usually same-day from on-truck stock.
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Class-A CAC1824400
Treasure Coast residents
Full-spectrum HVAC
Approved before work begins
Warranties registered for you
Display, sensor, and main boards diagnosed and replaced on the most common Cruisair and Dometic systems.
Control board service on current Webasto and Mabru self-contained and chilled-water systems.
Setpoint, scheduling, and fault diagnostics on multi-zone systems after a board swap.
Common SMX, Passport, and Mabru boards stocked for same-day swap at the dock.
We verify shore-power and generator voltage before installing a new board — a bad voltage source kills boards fast.
We confirm the board is the failure before replacing it, not the other way around.
Confirm the board has failed — not the sensor, display, or voltage source.
Board cost, labor, and any related repairs in writing.
Board replaced and programmed to vessel configuration.
Full system run with fault log clean before sign-off.
Common signs are blank display, random fault codes, units that won't start, or zones that won't respond. We confirm with a proper diagnostic before swapping the board.
Yes — the most common Cruisair SMX, Dometic Passport, and Mabru boards are on-truck for same-day dockside swaps.
Board model and availability, vessel access, and whether voltage or sensor issues need to be addressed at the same visit. We quote in writing before installing.
What Treasure Coast homeowners, businesses, and captains say about Maritime Air Co.
“My highest recommendations for Devon and the Maritime Air team — thorough, honest, and on time. They explained everything in plain language and didn't push any unnecessary upsells.”
“Devon has provided thorough maintenance and excellent service. Truly family-owned care — they treat your home like it's their own. Highly recommend for Treasure Coast homeowners.”
“Working with Devon on my HVAC system was a great experience from start to finish. Fair, clean install, and the system has been running perfectly through Florida summer heat.”
Free phone diagnostic. Same-day service across the Treasure Coast. No upsells, no overtime fees on maintenance plans.
