“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
Carrier Heat Pump Repair
Carrier Heat Pump Repair on Florida's Treasure Coast
Carrier heat pumps (25HCB6, 25HPB6, 25VNA0, Infinity 24VNA) cover both cooling and heating from a single outdoor unit. When something goes wrong, it usually shows up as a refusal to heat, weak heating output, or a unit that won't switch modes. We diagnose the reversing valve, defrost board, sensors, and auxiliary heat strips on every call.
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
Common Carrier heat pump failures we fix
Cold snaps on the Treasure Coast are short but real. When the heat pump fights back, the cause is usually one of these.
- Stuck reversing valve solenoid (won't switch to heat or cool)
- Defrost board failure causing constant defrost or no defrost
- Failed outdoor temperature sensor (thermistor)
- Auxiliary electric heat strip element burnout (5kW, 10kW)
- Sequencer or contactor failure on the heat strip kit
- Refrigerant charge issues — heat mode is more sensitive than cool
- Infinity communication faults preventing heat-mode handoff
How heat pump heating actually works in Florida
Below ~40°F outdoor temp, a heat pump's capacity drops and the auxiliary electric heat kicks in. On the Treasure Coast that happens a handful of times a year. If you're seeing your electric bill spike during those cold weeks, the auxiliary strips are doing most of the work — sometimes because a sensor or board has failed and the heat pump itself is locked out.
Reviews
What Treasure Coast Customers Say
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
Our Work
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Real installs and repairs we've completed across the Treasure Coast.
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FAQ
Common Questions
My Carrier heat pump runs but blows cool air in heat mode — what's wrong?+
Usually a stuck reversing valve, a failed defrost board telling the unit to stay in defrost, or low refrigerant. We diagnose with pressure readings and a magnet test on the reversing valve solenoid.
Why is my electric bill so high when the heat pump is running?+
If the auxiliary heat strips are running when they shouldn't be, you'll see 2–3× normal cooling-month bills. A failed outdoor sensor or thermostat lockout setting is the most common cause.
Should I replace my heat pump with a straight AC?+
Probably not — a heat pump in Florida costs almost nothing extra to install, and the few cold nights a year are noticeably cheaper to heat with the heat pump than with electric strips alone.
Ready when you are.
Call (772) 236-4277 or schedule online. Class-A licensed across the Treasure Coast.