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Heat Pump Repair in Houston, TX - Dual-Mode Specialists Who Get It Right
75 Degree AC repairs heat pumps across Houston TX, including reversing valve failures, defrost cycle problems, refrigerant loss, compressor faults, and control board issues. Our licensed contractors understand how heat pumps operate in both heating and cooling modes, and every repair is tested in both before we leave.
Heat Pump Repair Experts Houston Homes & Business Depend On
75 Degree AC works on heat pump repair calls across Houston every week. Our Heat pump repair experts diagnose and fix reversing valves, defrost boards, compressors, fan motors, refrigerant leaks, and control boards in every major heat pump brand. Heat pumps are different from standard furnaces because they operate in two modes, and a problem in one mode often affects the other. That dual-mode experience is what sets our heat pump repair service apart.
Every heat pump repair starts with testing in both heating and cooling modes before any parts are replaced. The full price is given upfront and does not change after the work begins. When a compressor or reversing valve can be replaced to restore full operation, we complete the repair and run a performance check. When the repair cost approaches the value of a new system, we explain both options so the homeowner can make the right call.
Our heat pump repair service in Houston is backed by fully licensed and insured contractors. We carry refrigerant, capacitors, contactors, fan motors, and defrost components on every truck. Same-day service is available for homes that have lost heat during a cold snap.
Heat Pump Failures Our team Diagnose in Houston
No Heat Output
A heat pump that runs in heating mode but delivers room-temperature or cool air usually has a stuck reversing valve, a low refrigerant charge, or a compressor that is not building pressure. Our contractors test suction and discharge pressures, reversing valve solenoid voltage, and compressor amp draw to isolate the cause.
Frozen Outdoor Unit
Ice buildup on the outdoor coil during heating mode means the defrost cycle is not activating or not completing. A failed defrost board, a bad defrost sensor, or a low refrigerant charge are the most common causes. We test defrost timing, sensor resistance, and refrigerant levels to find what is preventing the unit from clearing ice.
Reversing Valve Stuck
The reversing valve switches the heat pump between heating and cooling modes. When it sticks or the solenoid fails, the system may cool when it should heat or produce no output at all. Our team tests solenoid voltage and valve operation to confirm the failure before replacement.
Refrigerant Loss
A heat pump that gradually loses heating capacity over weeks or months likely has a refrigerant leak. Low charge reduces the system's ability to absorb and transfer heat. Our trusted technicians locate the leak, repair the connection, and recharge the system to the manufacturer specs.
Defrost Cycle Failure
The defrost cycle runs periodically to melt ice off the outdoor coil during heating mode. When the defrost board or timer fails, ice builds up until airflow is blocked and the system cannot absorb heat from the outdoor air. We test the defrost board, sensor, and timer to restore proper cycling.
Why 75 Degree AC Is the Smart Choice for Heat Pump Repair in Houston
When you need heat pump repair in Houston, 75 Degree AC brings dual-mode expertise to every call.
Heating and Cooling Tested
Every heat pump repair is tested in both heating and cooling modes before we leave. A fix that only addresses one mode can leave the other compromised. We verify full performance in both.
Refrigerant Certified
Our field technicians are certified to handle refrigerants. Leak detection, repair, and recharging are handled properly with the right equipment and recovery procedures. No shortcuts on refrigerant work.
Transparent Repair Cost
The full price is given before any work starts. There are no hidden fees, no diagnostic charges added to the bill, and no price changes once the repair begins. The homeowner knows the cost upfront.
Dual-Fuel System Ready
Many Houston homes use a dual-fuel setup with a heat pump and a gas furnace backup. Our team understands how both systems work together and can diagnose whether the problem is in the heat pump, the furnace, or the controls that switch between them.
Schedule Professional Heat Pump Repair Today
Call (713) 598-2737 and let 75 Degree AC handle your heat pump repair. We test both heating and cooling modes and back every job with guaranteed quality work.
How Our Heat Pump Repair Process Works in Houston
75 Degree AC follows the same structured process on every heat pump repair call in Houston, from the first contact to the final dual-mode test.
Share What You Notice
Call us or book online and describe what the heat pump is doing. If it is blowing cold air in heat mode, icing up outside, or making unusual sounds, that detail helps us prepare the right parts.
Test Both Modes
On arrival, our contractors test the heat pump in both heating and cooling modes. Refrigerant pressures, reversing valve operation, defrost cycle, compressor amp draw, and airflow are all checked. The goal is a complete picture before any parts are replaced.
Present the Diagnosis
The cause of the failure is explained in plain terms. The full repair price is given before any work starts. When replacement is the better financial option, both choices are presented clearly.
Complete the Fix
The failed component is replaced with a part matched to the heat pump. Refrigerant is recovered and recharged to spec when needed. Electrical connections are secured and verified.
Confirm Dual-Mode Heat
The heat pump runs through a full cycle in both heating and cooling modes. Temperature split, airflow, and refrigerant pressures are confirmed within spec. The system is verified working in both modes before the contractor leaves.
Business Hours
Monday
7 AM–9 PM
Tuesday
7 AM–9 PM
Wednesday
7 AM–9 PM
Thursday
7 AM–9 PM
Friday
7 AM–9 PM
Saturday
8 AM–8 PM
Sunday
8 AM–5 PM
How Heat Pump Heating Mode Works in a Houston Home
In heating mode, a heat pump absorbs heat from the outdoor air using the outdoor coil and refrigerant. The compressor raises the pressure and temperature of the refrigerant, and the indoor coil releases that heat into the air being pushed through the duct system by the blower motor. The reversing valve is what allows the system to switch between heating and cooling by changing the direction of refrigerant flow. Even when outdoor temperatures drop, there is still enough heat energy in the air for a heat pump to extract and transfer indoors.
When outdoor temperatures fall close to freezing, the outdoor coil can ice up during normal operation. The defrost cycle reverses the system briefly to melt the ice, then switches back to heating. Houston’s mild winters make heat pumps an efficient choice for most of the heating season.
Proudly Serving the Entire City of Houston TX
75 Degree AC provides HVAC services across Houston TX, supporting residential and light commercial properties throughout the city. Our service coverage reflects how HVAC demand actually works in Houston, from central neighborhoods to outer city districts. Customers rely on us for consistent service standards, clear communication, and dependable system support city-wide.
- Westwood
- University Place
- Meyerland
- Eastwood
- Harrisburg / Manchester
- Spring Branch (East Houston)
- Clear Lake (Houston city portion)
Book Heat Pump Repair in Houston Today
When your heat pump is not heating the home or running efficiently, every cycle without a fix adds strain to the compressor. Pick up the phone and call 75 Degree AC at (713) 598-2737. Our specialists arrive same-day, test both modes, and get your system back to full performance before leaving.
About Houston, TX
Houston, TX mild winters make heat pumps one of the most popular heating options in the metro. Homes in Pearland, Friendswood, and the Clear Lake area were often built with heat pump systems because the climate keeps outdoor temperatures within the efficient operating range for most of the winter. That efficiency makes heat pumps a smart choice, but it also means homeowners may not realize the system has a problem until a cold front pushes temps below the heat pump’s comfort zone and the backup heat kicks in unexpectedly.
In Missouri City, Stafford, and the southwest suburbs, dual-fuel systems that pair a heat pump with a gas furnace are common. A failure in the reversing valve or defrost cycle during a cold snap can leave the home running on backup heat only, which drives up energy bills fast. Having a licensed contractor who understands both sides of a dual-fuel system makes the difference between a targeted repair and an expensive guess.
Frequently Asked Questions FAQ's
Why Is My Heat Pump Blowing Cold Air When It Is Set to Heat Mode?
The most common causes are a stuck reversing valve, a low refrigerant charge, or a compressor that is not building pressure. Our contractors test all three to find the exact cause before replacing any parts.
What Does It Mean When the Outdoor Unit Is Covered in Ice?
Some ice during heating mode is normal, but the defrost cycle should clear it regularly. When ice builds up and stays, the defrost board, sensor, or timer has likely failed. Our team test the full defrost system to find which component is not working.
Why Does My Heat Pump Switch to Auxiliary Heat So Often in Houston?
Auxiliary heat activates when the heat pump cannot keep up with demand. A low refrigerant charge, a dirty outdoor coil, or a failing compressor can all reduce heating capacity and trigger the backup. We check the full system to find why the heat pump is underperforming.
Can a Heat Pump Reversing Valve Be Repaired or Does It Need Replacing?
In most cases, the reversing valve needs to be replaced rather than repaired. The solenoid can sometimes be replaced separately, but when the valve body is stuck internally, a full replacement is the reliable fix. Our technicians test both before recommending which approach fits.
Is a Heat Pump Still Efficient for Heating During a Houston Cold Snap?
Heat pumps work efficiently in Houston for most of the winter because outdoor temps rarely stay below freezing for long. During the coldest nights, a dual-fuel system switches to gas backup for a few hours. For homes without a gas furnace, heat strips provide temporary backup until temps rise.
Should a Heat Pump Be Tested in Both Heating and Cooling Modes After Repair?
Yes. Heat pump repairs should be verified in both heating and cooling modes before the job is finished. Issues with the reversing valve or refrigerant charge can affect performance in both settings, so testing each mode helps confirm the system is working properly.