Heat Pump Rebates in Massachusetts (2026)
Massachusetts runs Mass Save — the most generous statewide heat pump rebate program in the US — offering up to $10,000 for whole-home cold-climate heat pump installs that fully replace fossil-fuel heating. Partial-displacement installs receive $1,250 per ton up to $4,000. The Mass Save rebate stacks with the federal 25C credit (30% up to $2,000) and IRA HEEHRA rebates for income-qualified households. Mass Save also covers heat pump water heaters at $750 and ductless mini-split rebates at higher per-ton rates than ducted equivalents.
Massachusetts heat pump programs available
| Program | Amount | Type | Authority | Deadline |
|---|---|---|---|---|
| Mass Save Whole-Home Heat Pump Rebate | Up to $10,000 | Rebate | Eversource / National Grid / Unitil | Ongoing |
| Mass Save Partial Heat Pump Rebate | $1,250 per ton up to $4,000 | Rebate | Eversource / National Grid / Unitil | Ongoing |
| Mass Save Heat Pump Water Heater Rebate | $750 | Rebate | Eversource / National Grid / Unitil | Ongoing |
| Mass Save HEAT Loan | 0% APR up to $50,000 | Loan | Mass Save / Local banks | Ongoing |
| Federal 25C | 30% up to $2,000 | Tax credit | IRS | Ongoing |
| HEEHRA | Up to $8,000 | Rebate | MA Dept of Energy Resources | Ongoing |
| Mass Save Income-Eligible Heating | No-cost installation | Grant | Mass Save | Ongoing |
Eligibility quick check
Whole-home vs partial — what triggers $10,000?
Whole-home install displaces 100% of fossil fuel heating (no backup, no dual-fuel hybrid). Partial keeps the existing furnace as backup.
Cold-climate equipment requirement?
Must be on NEEP Cold Climate ASHP list and meet HSPF2 thresholds set annually.
How to stack with the federal credit
Massachusetts programs combine with the federal 25C 25C Credit (30% up to $3,200 per year) — see the 25C guide for filing instructions and forms.
Worked stacking example
Boston homeowner whole-home retrofit, 3-ton ducted cold-climate ASHP at $18,000: Mass Save $10,000 → basis $8,000. Federal 25C 30% = $2,000 cap. Total incentives $12,000 on $18,000 install (67% coverage).