Heat Pump Repair in Green Bay, Wisconsin
Most heat pump repair bills in Green Bay come in between $190 and $940, 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.
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Green Bay Weather and HVAC Load
NOAA's 1991-2020 climate normals put Green Bay at 7,779 heating degree days and 425 cooling degree days per year. Heating is the bigger job here, and furnaces and heat pumps in Green Bay put in far more hours than the air conditioner. A normal year brings 159 nights at or below freezing and 6 days over 90°F. Snowfall averages about 56 inches.
| Heating degree days / year | 7,779 |
|---|---|
| Cooling degree days / year | 425 |
| Nights at or below 32°F | 159 |
| Days above 90°F | 6 |
| Average low / high | 35.2°F / 54.3°F |
Green Bay Housing Stock
Half the homes in Green Bay were built before 1971 (Census ACS median), so the typical house is about 55 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Green Bay has roughly 25,000 owner-occupied homes, or 55.9% of households. Homes here have a median value of $191,500 and households a median income of $62,546. Those two numbers drive the labor adjustment in our estimate.
Between 2020 and 2025, NOAA's Storm Events Database logged 8 hail days and 21 days with damaging thunderstorm winds in Brown County. The largest hail reported was 2.5 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.
Symptoms Worth a Service Call
- The backup heat runs nonstop
- Ice builds up on the unit and doesn't melt off
- Grinding or loud buzzing from the outdoor unit
- The system is stuck in heating or cooling
What Moves the Price
- The diagnostic fee
- Emergency or after-hours service
- Whether the parts warranty still covers it
- Finding and fixing a refrigerant leak, then recharging
- Which part needs replacing: a reversing valve, defrost board or sensor
For Green Bay we raised the national figures about 10%, 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
- Diagnosis in both heating and cooling mode
- Replacing the failed parts
- A full test run
- Checking refrigerant pressures
- A defrost cycle test
Wisconsin Licensing and Efficiency Rules
Wisconsin 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 Wisconsin the company should carry a state license or registration. Ask for both.
Before You Hire
- Book maintenance twice a year, once before summer and once before winter.
- Light frost on the outdoor unit in winter is normal. A solid block of ice is not.
- Many heat pumps carry a 10-year parts warranty if they were registered. Find out whether yours was.
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Heat Pump Repair Questions from Green Bay Homeowners
What does heat pump repair cost in Green Bay?
Most bills land between $190 and $940, including the service call. A typical visit is about $600. 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 Green Bay
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Green Bay Botanical; NOAA Storm Events Database 2020-2025, Brown County. Prices are our estimates, not contractor quotes. Updated 2026.