Heat Pump Repair in Novi, Michigan
Most heat pump repair bills in Novi come in between $240 and $1,190, service call included. The busiest week of the year is usually the first hard freeze, when furnaces that sat idle since spring get switched on.
Novi Weather and HVAC Load
Novi logs 6,867 heating degree days and 572 cooling degree days in a normal year, based on the closest NOAA weather station. Heating is the bigger job here, and furnaces and heat pumps in Novi put in far more hours than the air conditioner. A normal year brings 146 nights at or below freezing and 11 days over 90°F. Snowfall averages about 36 inches.
| Heating degree days / year | 6,867 |
|---|---|
| Cooling degree days / year | 572 |
| Nights at or below 32°F | 146 |
| Days above 90°F | 11 |
| Average low / high | 37.7°F / 57.6°F |
Novi Housing Stock
Half the homes in Novi were built before 1992 (Census ACS median), so the typical house is about 34 years old. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Novi has roughly 18,000 owner-occupied homes, or 68% of households. With a median household income of $110,938 and a median home value of $399,100, local labor rates come out above the national middle in our model.
Between 2020 and 2025, NOAA's Storm Events Database logged 9 hail days and 41 days with damaging thunderstorm winds in Oakland County. The largest hail reported was 1.25 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. Oakland 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
- Grinding or loud buzzing from the outdoor unit
- The backup heat runs nonstop
What Moves the Price
- The diagnostic fee
- Whether the parts warranty still covers it
- Which part needs replacing: a reversing valve, defrost board or sensor
- Emergency or after-hours service
- Finding and fixing a refrigerant leak, then recharging
For Novi we raised the national figures about 40%, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- Checking refrigerant pressures
- A full test run
- Diagnosis in both heating and cooling mode
- Replacing the failed parts
- A defrost cycle test
Michigan Licensing and Efficiency Rules
Michigan falls in the DOE's North region. New split central air conditioners must meet at least 13.4 SEER2, and heat pumps sold anywhere in the U.S. need 14.3 SEER2 and 7.5 HSPF2. Most repairs don't need a permit. Anyone who opens the refrigerant circuit does need EPA Section 608 certification, and in Michigan the company should carry a state license or registration. Ask for both.
Before You Hire
- Many heat pumps carry a 10-year parts warranty if they were registered. Find out whether yours was.
- Keep two feet clear around the outdoor unit, including snow.
- Light frost on the outdoor unit in winter is normal. A solid block of ice is not.
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Heat Pump Repair Questions from Novi Homeowners
What does heat pump repair cost in Novi?
Most bills land between $240 and $1,190, including the service call. A typical visit is about $760. Night and weekend calls cost more.
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.
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.
Heat Pump Repair Near Novi
- Farmington Hills $230 to $1,120
- Livonia $220 to $1,070
- Kalamazoo $170 to $840
- Pontiac $170 to $840
- Southfield $190 to $950
- Taylor $180 to $850
- Rochester Hills $240 to $1,180
- Dearborn Heights $180 to $880
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Farmington; NOAA Storm Events Database 2020-2025, Oakland County. Prices are our estimates, not contractor quotes. Updated 2026.