HEAT PUMP REPAIR
HEAT PUMP REPAIR IN Plant City, FL.
A heat pump does two jobs on one set of components, so a single fault ruins either season. Mission Air Services, Inc. carries out heat pump repair across Plant City, FL, Lakeland, and Riverview, testing both modes properly. Answered 7 days a week, members save 15%, and NATE-certified work is licensed under CAC1820450. Book on our contact page.
ONE FAULT CAN COST YOU BOTH SEASONS.
Because the same compressor, coil, and refrigerant circuit serve heating and cooling, a heat pump problem rarely stays in its lane. A stuck reversing valve leaves you cooling in January or heating in July. Low charge weakens both modes. A failed defrost board only shows itself on a cold damp morning. Diagnosing properly means testing both modes, not just the one that happens to be failing today.
That is why our heat pump calls take a little longer than a straightforward air conditioner visit. Checking the mode nobody complained about is how the second callout gets avoided.
- Both heating and cooling modes tested
- Reversing valve and defrost board verified
- Auxiliary heat behavior checked and corrected
- Licensed under CAC1820450, priced before parts are fitted
Quality doors from established manufacturers hold their finish and function longer than budget alternatives, which means fewer repairs and replacements over the life of your home. That durability protects the money you put into the purchase.
Long Term Value
HEAT PUMP REPAIR
THE SYMPTOMS OVERLAP, SO THE TESTING HAS TO BE THOROUGH.
Weak heating, weak cooling, ice on the outdoor coil, a system running constantly, strips engaging when they clearly should not: several completely different faults will produce each one of those. Low charge, a failing reversing valve solenoid, a defrost sensor out of calibration, and a thermostat configured as a conventional system can all look identical from the hallway. Only measurement separates them, and guessing here gets expensive quickly.
TUNED TO HOW HEAT PUMPS BEHAVE IN THIS CLIMATE.
Heat pumps here spend the overwhelming majority of their hours in cooling mode, so the heating components see very little exercise and seize accordingly. Defrost cycles are rare enough that a failed board goes unnoticed for years. Reversing valves stick from disuse rather than wear. Understanding that pattern is why we test the winter side during a summer visit, when finding a fault costs nothing but a few minutes.
REVERSING VALVES HAVE TAUGHT US MORE THAN ANY MANUAL DID.
There is a particular kind of intermittent heat pump fault that no diagnostic tree catches on the first pass, and the only way to learn it is to have chased plenty of them. Over 20+ years across Hillsborough County and Polk County we have accumulated that experience the slow way. It shows up now as shorter diagnostics and fewer parts replaced hopefully on the way to finding the real answer.
WHAT A CORRECT HEAT PUMP REPAIR RESTORES
BOTH MODES WORKING PROPERLY
Heating and cooling are verified individually after the repair. You are not left discovering in December that the summer fix quietly broke something on the heating side.
STRIP HEAT BACK UNDER CONTROL
Auxiliary heat running when it should not is one of the most expensive faults a heat pump develops. Correcting lockout and staging stops that draining money every cold morning.
A WORKING DEFROST CYCLE
Proper defrost operation keeps the outdoor coil clear without wasting energy. A board stuck in either direction costs efficiency and, left long enough, damages the compressor itself.
CORRECT REFRIGERANT CHARGE
Charge affects both modes, and a slow leak degrades performance long before it stops the system. Locating and repairing the leak fixes the cause rather than deferring it.
LONGER COMPRESSOR LIFE
Most heat pump faults put additional strain on the compressor. Correcting them early protects the component whose failure normally means replacing the entire system rather than repairing it.
CONFIDENCE THROUGH BOTH SEASONS
Once both modes have been measured and verified, neither a heat wave nor a cold front is a question mark. That reassurance lasts considerably longer than the repair itself.
WHAT WE REPAIR
OUR HEAT PUMP REPAIR WORK.
Heat pump faults concentrate in the components that make it different from a straight air conditioner. Those are the ones we test first and the ones we carry on the truck.
REVERSING VALVE
Reversing Valve Faults
A valve stuck in one position leaves the system locked in heating or cooling. We test the solenoid, verify the pressure differential, and confirm whether the valve body itself has failed.
DEFROST
Defrost Board and Sensor Repairs
Failed boards and drifting sensors cause coils to ice or defrost cycles to run needlessly. Both waste energy and stress the compressor, and both are inexpensive to correct once identified.
AUXILIARY HEAT
Auxiliary Heat Faults
Strips that fail to engage leave the house cold, and strips that engage constantly produce alarming bills. We test the sequencers, the lockout logic, and the control configuration together. Both failures are cheap to correct once identified.
REFRIGERANT
Charge and Leak Repairs
Low charge weakens both modes. We locate the leak electronically, repair it, evacuate the system, and recharge by weight rather than adding refrigerant until the pressures look approximately right. Pressure testing confirms the repair before the charge goes back.
ELECTRICAL
Contactor, Capacitor, and Board Repairs
The same electrical components that fail on air conditioners fail here too, and they fail more often given the extra runtime. We check why the part failed as well as replacing it.
CONTROLS
Thermostat Configuration Repairs
A heat pump configured as a conventional system will run strips constantly and never use the compressor for heat. Correcting the configuration is quick and often fixes an expensive complaint.
THE WORD ON OUR WORK
WHAT OUR CLIENTS SAY.
Heat pump reviews often come from households that had been told they needed a new system. What they describe is a second opinion that identified a defrost board or a reversing valve solenoid instead, and a bill that came in at a fraction of the original quote.
Common Questions
frequently asked
questions.
These questions come up on nearly every heat pump call we attend around the area. Ask us anything else while the technician still has the gauges connected.
Why is my heat pump blowing cold air in heating mode?
Most likely a reversing valve that has not switched, low refrigerant charge, or a thermostat configured incorrectly. A brief cool spell during a defrost cycle is normal, but sustained cool air is not.
Why is my heat pump icing up outside?
Some frost during cold damp weather is expected and the defrost cycle clears it. Persistent heavy ice means the defrost board, sensor, or refrigerant charge needs testing rather than manual clearing.
What is a reversing valve and how do I know it failed?
It is the component that switches the system between heating and cooling. A failure leaves you stuck in one mode, and testing the solenoid and pressure differential confirms it quickly.
Why is my auxiliary heat running so much?
Usually an incorrectly set balance point, a lockout that was never configured, or a thermostat treating the system as conventional. Each is inexpensive to correct and each costs real money left alone.
Can a heat pump be repaired or does it need replacing?
Most faults are repairable, and only compressor failure genuinely forces the replacement conversation. Mission Air Services, Inc. offers free second opinions across Plant City, FL before anyone commits to new equipment.
How long do heat pumps last in this climate?
Typically 10 to 15 years, at the shorter end without regular service given how many hours they log here. Consistent maintenance is what pushes a system toward the upper end.
Why does my heat pump run constantly in cool weather?
Longer run times are normal for heat pumps in heating mode, since they deliver gentler heat than strips. Constant operation with no temperature gain, however, points to a genuine fault.
Should I switch to emergency heat if there is a problem?
Only temporarily, because emergency heat runs expensive strips exclusively and bypasses the compressor entirely. Use it to stay warm until the visit, then switch back once the fault is corrected.
We Finalize Your Order
STEP 04
Once you choose a product, we confirm every specification, from swing direction to hardware preparation, before placing the order, so the door that arrives matches what was actually agreed upon.
HOW WE WORK
FROM SYMPTOM TO BOTH MODES WORKING, HERE IS HOW.
STEP 01
WE ESTABLISH WHICH MODE FAILS
Heating, cooling, or both, and whether the fault is constant or intermittent. That single answer eliminates a large part of the diagnostic tree before any instrument comes out of the bag. It also tells us which parts to bring along.
STEP 02
WE CHECK THE CONTROL CONFIGURATION
System type, staging, balance point, and auxiliary lockout are all verified at the thermostat. A surprising number of heat pump complaints originate here rather than at the equipment itself. Correcting a setting costs nothing and occasionally solves everything.
STEP 03
WE TEST THE REVERSING VALVE
The solenoid is energized and the pressure differential measured across the valve. That confirms whether it is switching properly or has stuck, and it takes only a few minutes. The result is recorded on your written summary.
STEP 04
WE VERIFY DEFROST OPERATION
The defrost board and sensor are tested and a cycle initiated where conditions allow. Boards fail silently in this climate because they are so rarely called upon to work. Most homeowners have no idea theirs has stopped working.
STEP 05
WE MEASURE CHARGE AND ELECTRICALS
Pressures, superheat, subcooling, amperage, and capacitor values are all recorded and compared against manufacturer targets. Low charge always triggers a leak search rather than a top-up. Every figure is compared against the previous visit where we have one.
STEP 06
WE REPAIR AND RETEST BOTH MODES
After the correction, heating and cooling are each run and measured again. Confirming the mode you did not complain about is what prevents a second callout next season. You receive both sets of readings before we leave the property.