Heat Pump Repair in Lewisville, Texas
Heat pump repair in Lewisville starts near $210 for a simple fix and can reach $1,000 for after-hours calls or major parts. A typical bill is closer to $640.
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Lewisville Weather and HVAC Load
NOAA's 1991-2020 climate normals put Lewisville at 2,437 heating degree days and 2,625 cooling degree days per year. Neither season dominates in Lewisville. That balance is a big reason heat pumps and dual-fuel systems sell well in Texas. A normal year brings 44 nights at or below freezing and 104 days over 90°F.
| Heating degree days / year | 2,437 |
|---|---|
| Cooling degree days / year | 2,625 |
| Nights at or below 32°F | 44 |
| Days above 90°F | 104 |
| Average low / high | 54.7°F / 76.2°F |
Lewisville Housing Stock
Census figures put the median build year in Lewisville at 1996, so a typical house here has about 30 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. About 23,000 households here own their home, 46.6% of the occupied total. The median home value is $350,200, and median household income is $85,002. We use both figures to adjust labor and pricing for this page.
Denton County had 53 hail days and 31 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 5.9 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Denton County also had 4 tornado days in that period.
Symptoms Worth a Service Call
- Cool air coming out in heating mode
- Ice builds up on the unit and doesn't melt off
- The backup heat runs nonstop
- The system is stuck in heating or cooling
What Moves the Price
- Emergency or after-hours service
- Which part needs replacing: a reversing valve, defrost board or sensor
- Finding and fixing a refrigerant leak, then recharging
- Whether the parts warranty still covers it
- The diagnostic fee
We raised the national figures about 18% for Lewisville using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Checking refrigerant pressures
- Diagnosis in both heating and cooling mode
- Replacing the failed parts
- A defrost cycle test
- A full test run
Texas Licensing and Efficiency Rules
Texas is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). A repair usually goes ahead without a permit, but the tech handling refrigerant must hold EPA 608 certification. Ask the company for its Texas license or registration number before the visit.
Before You Hire
- Light frost on the outdoor unit in winter is normal. A solid block of ice is not.
- Keep two feet clear around the outdoor unit, including snow.
- Book maintenance twice a year, once before summer and once before winter.
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Heat Pump Repair Questions from Lewisville Homeowners
What does heat pump repair cost in Lewisville?
Most bills land between $210 and $1,000, including the service call. A typical visit is about $640. Night and weekend calls cost more.
Why is my heat pump blowing cold air?
For a few minutes during a defrost cycle, that's normal. If it keeps going, the usual causes are a stuck reversing valve, low refrigerant or a thermostat set to the wrong mode.
Is it normal for a heat pump to freeze?
A thin layer of frost in winter is normal, and the defrost cycle should clear it. Heavy ice that stays usually means a defrost control or airflow problem.
Heat Pump Repair Near Lewisville
- Carrollton $220 to $1,050
- Flower Mound $270 to $1,300
- Midland $200 to $980
- Waco $170 to $830
- Round Rock $220 to $1,070
- McAllen $190 to $920
- Abilene $180 to $860
- Pasadena $190 to $920
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Grapevine Dam; NOAA Storm Events Database 2020-2025, Denton County. Prices are our estimates, not contractor quotes. Updated 2026.