Short answer: Mass Save lists 1,770 contractors in its Heat Pump Installer Network (1,728 that serve homes), in a list revised October 29, 2026. Mass Save says they have shown proof of EPA certification and Massachusetts insurance and completed heat pump installation training. It does not endorse their work, and neither do we: the list does not rank anyone.
What the list tells you, and what it does not
It tells you who has joined the network, which counties each contractor serves, what equipment they install and whether they offer the instant rebate (474 of the 1,728 home contractors do). It does not tell you how good a contractor is, what they charge, or whether a particular rebate requires membership. We have not verified that last point, so ask Mass Save which contractors qualify for the rebate you want before you sign.
Contractors by county
| County | Residential contractors that serve it | Offer the instant rebate | Cities where we rank installers |
|---|---|---|---|
| Middlesex | 958 | 313 | Cambridge, Lowell, Newton, Somerville |
| Norfolk | 860 | 290 | Quincy |
| Plymouth | 761 | 265 | Brockton |
| Suffolk | 757 | 269 | Boston |
| Worcester | 693 | 250 | Worcester |
| Essex | 665 | 229 | Lawrence, Lynn |
| Bristol | 654 | 232 | Fall River, New Bedford |
| Barnstable | 576 | 189 | none yet |
| Hampshire | 374 | 145 | none yet |
| Franklin | 373 | 151 | none yet |
| Hampden | 355 | 138 | Springfield |
| Berkshire | 294 | 115 | none yet |
| Nantucket | 239 | 98 | none yet |
| Dukes | 219 | 88 | none yet |
A contractor can serve several counties, so the counts add up to more than the total. Each city page lists the network contractors with an office in that city, and marks the ones on our review-ranked list with a ✓.
Equipment the home contractors install
- Ductless Air Source Heat Pumps: 1,697 contractors
- Ducted Air Source Heat Pumps: 1,461 contractors
- Conventional Heating Equipment (furnaces, boilers): 1,001 contractors
- Heat Pump Water Heaters: 827 contractors
- Variable Refrigerant Flow Heat Pumps: 606 contractors
- Air to Water Heat Pumps: 495 contractors
- Water Source Heat Pumps: 353 contractors
- Heat Recovery Chiller: 105 contractors
- Solar-assisted Heat Pump Water Heaters: 94 contractors
- Ground Source Heat Pumps: 56 contractors
How to pick one
Start with the contractors in your county that install the equipment you want. Then compare Google reviews and written quotes, as on our Massachusetts heat pump installer rankings. Ask each one for a written heat-loss calculation and an itemized quote.
Source: Mass Save Heat Pump Installer Network contractor list, revised October 29, 2026. The Mass Save Sponsors do not endorse or warrant the performance of installed or serviced equipment and do not make any representations or warranties regarding the services provided by these contractors.
Questions about heat pump installers
What is the Mass Save Heat Pump Installer Network?
It is a list of contractors that Mass Save publishes. Mass Save says they have provided proof of EPA certification and insurance in Massachusetts and have completed heat pump installation training. The list we read has 1,770 contractors and was revised October 29, 2026.
Does Mass Save approve or endorse these contractors?
No. Mass Save says its sponsors do not endorse or warrant the performance of installed or serviced equipment and make no representations about the contractors' services.
Do I have to use a network contractor to get a Mass Save heat pump rebate?
We have not verified that, so we do not say yes or no. Ask Mass Save which contractors qualify for the rebate you want before you sign a contract.
How do I find a network contractor near me?
Find your county in the table above and open the city page for the closest city we rank. You can also check Mass Save's own list, which shows each contractor's counties, equipment and languages.
