A Boston heat pump quote can range from one room to a full-house conversion, so there is no useful citywide average without the scope. One Massachusetts contractor's January 2026 Mitsubishi examples run from $6,800-$14,000 for one ductless zone, $11,000-$18,000 for two or three zones, and $16,000-$26,000 for a whole-home ducted system. Treat those as examples, not a market price.
The first comparison is scope. The second is whether the system can deliver the promised heat at Boston's winter design condition. The third is whether the rebate, electrical, permit, and exterior-unit assumptions are current for your address.
Direct answer
Before comparing Boston proposals, make each installer state the same six things: exact indoor and outdoor model numbers, rooms served, Manual J heating load, delivered capacity at the selected design temperature, electrical and permit scope, and the Mass Save rebate pathway. A lower total that excludes a panel upgrade, exterior-unit approval, condensate work, or backup heat is not a lower price for the same project.
Mass Save recommends getting proposals from at least two or three participating contractors. Do that before a deposit, then compare the written inclusions rather than the sales summary.
Published Boston-area cost examples
There is no official 2026 Boston price table that normalizes every home and system type. The figures below are published Massachusetts Mitsubishi examples from Endless Energy, checked August 17, 2026. They are useful for recognizing project scale, but they are one contractor's ranges for one premium brand, not an independent market average.
| Project example | Published installed range | What must be matched before comparing |
|---|
| Single ductless zone, 6,000-18,000 BTU | $6,800-$14,000 | Exact model, indoor head, line-set length, electrical circuit, condensate, wall penetration, permit |
| Two or three ductless zones | $11,000-$18,000 | Number and size of heads, branch equipment, line-set routing, room coverage, low-temperature output |
| Whole-home ducted system | $16,000-$26,000 | Load calculation, duct reuse or replacement, returns, static pressure, backup heat, panel and service work |
Do not subtract a rebate until the proposal identifies the eligible equipment, rebate type, tonnage calculation, contractor status, utility sponsor, and who receives the payment. Also do not carry a 2025 federal heat pump credit into 2026 math. Mass Save's current page says expenditures after December 31, 2025 are no longer eligible for that expired federal credit.
Current 2026 Mass Save rebates
Mass Save lists these 2026 air-source heat pump amounts. Eligibility is not automatic, and the rebate cannot exceed the installation cost.
| Pathway | 2026 amount | Core use case |
|---|
| Whole-home | $2,650 per ton, up to $8,500 | Heat pumps become the sole source for heating and cooling |
| Partial-home | $1,125 per ton, up to $8,500 | Existing boiler or furnace remains to supplement the heat pump |
| Basic | $250 per ton, up to $2,500 | Replacement heat pump, new conditioned area, or no displaced fossil/electric-resistance heat |
| Income-based enhanced | Up to $16,000 or up to no cost | Income-qualified households meeting the program's fuel and pathway rules |
For all three standard pathways, the equipment must meet ENERGY STAR Cold Climate requirements, installation must occur from January 1 through December 31, 2026, and the installer must participate in the Mass Save Heat Pump Installer Network. Supporting documents are due by February 28, 2027.
Whole-home projects have weatherization and verification requirements. Partial-home projects generally need an approved integrated control where fossil-fuel heat remains in a served zone. Ask the contractor to name the pathway and put every prerequisite in the proposal.
Four Boston checks that can change the quote
1. Size against 12°F, not a generic New England number
ACCA Manual J Table 1A lists 12°F for Boston Logan's 99% heating design temperature. Your address and selected weather station still matter, but a Boston proposal should not hide behind tonnage alone. Ask for the room-by-room load and the exact matched system's delivered BTU/h at the chosen design temperature. Our design-temperature verification guide shows the calculation.
2. Make electrical scope explicit
The City of Boston notes that heat pump projects may require wiring, panel, or electrical-service upgrades depending on the building and existing loads. The quote should state the required circuit, disconnect, panel work, service work, permit responsibility, and excluded utility work. A line marked "electrical by owner" is an unresolved cost, not a complete proposal.
3. Check the exterior-unit location for your address
Outdoor-unit placement affects noise, service access, snow clearance, condensate, and neighbors. It can also affect review requirements. Boston's zoning viewer shows address-specific zoning and overlay rules. If the property is individually landmarked or inside a historic district, the relevant commission reviews proposed physical changes to the property. Confirm the location and required approvals before equipment is ordered. Do not assume every Boston property has the same rule.
4. Use the city help desk when the program path is unclear
Boston Energy Saver offers residents one-to-one help with Mass Save and other building-upgrade programs. Its help desk is open Monday-Friday, 9 a.m.-5 p.m., at 617-635-SAVE (7283) and energysaver@boston.gov. This is useful when the utility sponsor, electrical work, weatherization sequence, or income-based route is unclear.
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What the written quote should settle
| Decision | Acceptable evidence | Red flag |
|---|
| Rooms served | Room-by-room plan with indoor units or duct changes | "Whole home" with no room list |
| Winter coverage | Manual J load plus output for the exact matched system at the selected design temperature | Tonnage or minimum operating temperature only |
| Electrical | Circuit, disconnect, panel/service work, permit, and exclusions | Electrical is TBD after signing |
| Exterior placement | Dimensioned location with snow, drainage, noise, access, and approval responsibility | Installer chooses location on installation day |
| Backup heat | Equipment, control logic, switchover point, and operating assumption | Existing boiler or strips mentioned but not controlled or priced |
| Incentives | Current pathway, amount, tonnage basis, eligibility conditions, and payment recipient | Stale $10,000 cap or 2026 federal credit subtracted as guaranteed |
Before you pay a deposit
- Get at least two comparable proposals from participating contractors.
- Ask each contractor to revise missing scope in writing.
- Verify exact model eligibility and rebate pathway on the current Mass Save source.
- Check the property's zoning overlays and landmark status before accepting an exterior location.
- Compare low-temperature output, rooms served, electrical work, backup heat, warranty, permits, and exclusions before comparing the net total.
- Send the written proposal for a free heat pump quote review before you sign.
We review the written evidence in the proposal. We do not sell the job or take payment from the installer for the verdict.
FAQ
What does a heat pump cost in Boston in 2026?
It depends on whether the quote covers one zone, several ductless zones, or a whole-home ducted conversion. Published Massachusetts Mitsubishi examples checked in August 2026 range from $6,800-$14,000 for one zone to $16,000-$26,000 for a whole-home ducted system. Those are one contractor's examples, not a Boston market average.
Is the Mass Save heat pump rebate still $10,000?
No for the standard 2026 air-source pathways. The current whole-home and partial-home cap is $8,500. Income-based enhanced incentives can reach $16,000 or up to no cost for qualifying households. Use the current program page, not a 2025 installer article or proposal.
Can I claim the federal heat pump tax credit for a 2026 installation?
Mass Save states that the federal heat pump credit expired at the end of 2025 and that expenditures after December 31, 2025 are not eligible. Do not let a proposal subtract that expired credit from a 2026 net price.
Does every Boston heat pump need landmark approval?
No. Review depends on the property and proposed work. Check the address in Boston's zoning viewer and confirm whether the building is individually landmarked or within a historic district. If it is, ask the relevant commission and installer what review is required for the proposed exterior change.
Is 12°F the coldest temperature a Boston heat pump must handle?
No. It is the published 99% heating design temperature for the Boston Logan station, not a record low or shutdown point. The system may need backup below the design condition depending on the load, selected equipment, and design. The proposal should show that strategy.
Sources
- Mass Save 2026 air-source heat pump rebates, checked August 17, 2026
- City of Boston Energy Saver, checked August 17, 2026
- City of Boston zoning designation guide, checked August 17, 2026
- Boston Landmarks Commission individual landmarks, checked August 17, 2026
- Endless Energy Massachusetts Mitsubishi pricing examples, published January 11, 2026 and checked August 17, 2026
- ACCA Outdoor Design Conditions Guide, transcribed and documented in our design-temperature verification guide
