“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.”
Spencer Fuller
May 2026
Treasure Coast HVAC Service
Marine AC Control Board Diagnostics & Replacement
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.
License # CAC1824400 5.0 · 37 Google Reviews Port St. Lucie · Fort Pierce · Stuart · Vero Beach
Why Treasure Coast Trusts Us
Reasons Homeowners & Captains Pick Maritime Air Co.
5-Star Rated
Verified Google reviews
Licensed & Insured
Class-A CAC1824400
Family Owned & Operated
Treasure Coast residents
Residential · Commercial · Marine
Full-spectrum HVAC
Written Estimates
Approved before work begins
Photo-Documented Work
Warranties registered for you
Chamber of Commerce
St. Lucie County member
Why Maritime Air Co.
What You Get With Our Marine Control Board Replacement Service
Cruisair SMX & Passport
Display, sensor, and main boards diagnosed and replaced on the most common Cruisair and Dometic systems.
Webasto & Mabru
Control board service on current Webasto and Mabru self-contained and chilled-water systems.
Zone Control Programming
Setpoint, scheduling, and fault diagnostics on multi-zone systems after a board swap.
On-Truck Stock
Common SMX, Passport, and Mabru boards stocked for same-day swap at the dock.
Voltage Verification
We verify shore-power and generator voltage before installing a new board — a bad voltage source kills boards fast.
Honest Diagnostic
We confirm the board is the failure before replacing it, not the other way around.
Our Process
How Marine Control Board Replacement Works With Us
01
Diagnose
Confirm the board has failed — not the sensor, display, or voltage source.
02
Quote
Board cost, labor, and any related repairs in writing.
03
Swap
Board replaced and programmed to vessel configuration.
04
Verify
Full system run with fault log clean before sign-off.
FAQ
Marine Control Board Replacement Questions, Answered
How do I know if my marine AC control board is bad?+
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.
Do you carry boards on the truck?+
Yes — the most common Cruisair SMX, Dometic Passport, and Mabru boards are on-truck for same-day dockside swaps.
What affects control board replacement cost?+
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.
Reviews
Marine Control Board Replacement — Customer Reviews
What Treasure Coast homeowners, businesses, and captains say about Maritime Air Co.
5.0
37 Google Reviews
Google
“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.”
Oh Canada
March 2026
“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.”
David Alker
February 2026
Ready for Marine Control Board Replacement?
Free phone diagnostic. Same-day service across the Treasure Coast. No upsells, no overtime fees on maintenance plans.