Heat Pump Repair in Boston, Massachusetts
Heat pump repair in Boston starts near $250 for a simple fix and can reach $1,220 for after-hours calls or major parts. A typical bill is closer to $780.
Boston Weather and HVAC Load
NOAA's 1991-2020 climate normals put Boston at 5,545 heating degree days and 801 cooling degree days per year. Heating is the bigger job here, and furnaces and heat pumps in Boston put in far more hours than the air conditioner. A normal year brings 92 nights at or below freezing and 14 days over 90°F. Snowfall averages about 49 inches.
| Heating degree days / year | 5,545 |
|---|---|
| Cooling degree days / year | 801 |
| Nights at or below 32°F | 92 |
| Days above 90°F | 14 |
| Average low / high | 44.5°F / 59.3°F |
Boston Housing Stock
The median Boston home dates to 1947, according to the Census ACS. That makes the typical house about 79 years old. Houses that old often still have duct runs sized for an old coal or oil furnace and 60- or 100-amp electrical panels. Both can add cost when new equipment goes in. Boston has roughly 99,000 owner-occupied homes, or 35.4% of households. The median home value is $710,400, and median household income is $94,755. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 2 hail days and 15 days with damaging thunderstorm winds in Suffolk County. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost.
Symptoms Worth a Service Call
- Ice builds up on the unit and doesn't melt off
- The backup heat runs nonstop
- The system is stuck in heating or cooling
- Grinding or loud buzzing from the outdoor unit
What Moves the Price
- The diagnostic fee
- Emergency or after-hours service
- Finding and fixing a refrigerant leak, then recharging
- Which part needs replacing: a reversing valve, defrost board or sensor
- Whether the parts warranty still covers it
For Boston we raised the national figures about 43%, 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
- A defrost cycle test
- A full test run
- Replacing the failed parts
- Diagnosis in both heating and cooling mode
- Checking refrigerant pressures
Massachusetts Licensing and Efficiency Rules
Massachusetts 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 Massachusetts 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 Boston Homeowners
What does heat pump repair cost in Boston?
Most bills land between $250 and $1,220, including the service call. A typical visit is about $780. 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 Boston
- Cambridge $280 to $1,340
- Worcester $210 to $1,000
- Springfield $180 to $880
- Lowell $220 to $1,050
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Boston Logan International Airport; NOAA Storm Events Database 2020-2025, Suffolk County. Prices are our estimates, not contractor quotes. Updated 2026.