MassCEC offers awards to residences that install qualifying air-source heat pump (ASHP) systems, which provide highly efficient heating and cooling. Incentives are available both for qualifying mini-split (single head, multi-head, and central) systems.

This program is part of MassCEC’s $48 million Clean Heating and Cooling program, which supports technologies that provide customer cost savings and environmental benefits while maintaining a high level of comfort and reliability.

Eligible projects can submit their rebate applications through MassCEC's online portal. 

March 20, 2019 will be the last day that MassCEC accepts rebate applications through this program.

Project Eligibility

Rebates are available for new or existing homes that meet the following eligibility requirements:

  1. Have Eversource, National Grid, Unitil, or an eligible municipal light plant, as their electric provider.
  2. Use the installed air-source heat pump (ASHP) for heating consistently throughout the winter.
  3. Work with a participating installer.
  4. Install ASHPs from MassCEC’s Qualified Products List.
  5. Have had a home energy audit completed within the last four years or have one scheduled within six months of project completion. Please read through our program FAQs for answers to questions about home energy audit requirements and exceptions.

See the Program Manual for more details and be sure to understand the Terms and Conditions of the program before applying for a rebate.

Eligibility for Rebate Adders

If the project meets the above eligibility requirements, system owners should next determine if they are eligible for a rebate adder (Reference the Program Manual Section 2.3 for more information on Rebate Adders and Verification Methods).

  • Income-Based Rebate Adder. In the interest of increasing access to clean heating and cooling technologies such as air-source heat pumps to all residents of Massachusetts, MassCEC offers additional incentives of for households with income below eighty percent (80%) and one-hundred-twenty percent (120%) of the state median income.  Based on updated state median income data, most projects qualify for the 120% of State Median Income incentive level. For income thresholds and more information visit MassCEC’s Income-Based Rebate Adder page.
  • Electric Resistance Displacement Adder. Electric resistance heating produces more greenhouse gas emissions than other forms of heating. As such, MassCEC has created an Electric Resistance Displacement Adder to further incentivize those system owners to transition toward an alternative, renewable heating source. Available to projects that apply on or after October 31, 2017.

**New homes and multifamily residences with more than four units do not require an energy audit.
***If you live in an area with a scheduling backlog, please submit an email confirming you are in the scheduling queue with your application.
      -   Please call Mass Save at 866-527-7283 to schedule.
****For purposes of determining rebate levels, MassCEC uses the system’s maximum heating capacity (BTU/hr) at 5°F.

Step 1: Find an Installer 

Each homeowner should first select an eligible ASHP installer, who can help you with your rebate application. MassCEC recommends that residents:

Prior to deciding to move forward with a system, residents who may meet income criteria should determine if they are eligible for the Income-Based Rebate Adder, as described in the Program Manual Section 2.3. You may also reference our Income-Based Rebate Adder webpage for an up-to-date list of income thresholds by household size.

Step 2: Select Eligible Equipment

Work with your installer to select eligible equipment. You can check MassCEC's list of eligible equipment on our Eligible Residential Air-Source Heat Pumps page.

The below table reflects the incentive structure that took effect on November 1, 2018. 

Rebate Type

Single-Head System
(per System)

Central or Multi-Head Systems
(per 12,000 BTU/hr*)

Maximum # of outdoor units eligible

Maximum capacity*
eligible (BTU/hr)

Electric Resistance (“ER”) Displacement Adder
(per System or per 12,000 BTU/hr*)

Maximum Rebate per Project Site
(without ER Displacement Adder/ with ER Displacement Adder)

Base Rebate







120% Income‐Based Rebate







80% Income‐Based Rebate












Step 3: Apply for a Rebate 

Within 90 days of project completion, residents, with assistance from their installer(s), should complete the application through the online portal, and submit their supporting documentation as instructed through the portal. Be sure to read and understand the Terms and Conditions of our Program.

Please Note: March 20, 2019 will be the last day that MassCEC accepts rebate applications through this Program

Click here to apply online for your Air Source Heat Pump Rebate


Step 4: Check Your Rebate Status

If you applied before November 1st, 2018, click here to check your rebate status.

If you applied after November 1st, 2018, call 617-315-9300 or email to check your rebate status.


Step 5: Take Care of Your Heat Pump

Follow these simple tips to get the most out of your new air-source heat pump!

Q: Where can I find the rebate application?

Q: What is the deadline for submitting the rebate application? 

  • Rebate applications must be submitted within 90 days of project installation, or they will not be considered. Installers and system owners should pay attention to additional deadlines if they plan on installing a unit that has been grandfathered into our program.

Q: How do I check the status of my rebate?

  • If you applied before November 1st, email or call 866-266-3174 with the applicant’s name, address, and installer’s name. If you applied after November 1st, email or call 617-315-9300. 

Q: How much will my rebate be?

  • Homeowners are eligible for a standard rebate of $500 per eligible, single-head ASHP, for up to three heat pumps.  For multi-head models, homeowners are eligible for standard rebates of up to $2,000, depending on the heating capacity of the outdoor unit. Homeowners who qualify for Income-Based Rebate Adders qualify for higher rebate levels. Projects displacing electric resistance are also potentially eligible for a rebate adder.

Q: Why isn’t everyone in Massachusetts eligible for this rebate program?

  • Projects receiving rebates through MassCEC must be located in a utility territory that contributes funding to the Renewable Energy Trust (RET), which includes communities served by investor owned electric utility companies or a participating municipal lighting plant

Q: What is an MLP and where are they?

  • MLP stands for “municipal light plant” and refers to communities who are serviced by a publicly owned local utility instead of an investor-owned electric company, such as National Grid or Eversource. Some of these MLP communities contribute to the RET, which is the original source of our funding for rebates. We are unable to provide rebates to MLP communities that do not contribute to the RET. 

Q: Why does the project site's electric provider determine eligibility? 

  • National Grid, Eversource, Unitil and eligible municipal light plants each pay into the Renewable Energy Trust (RET). The RET funds the rebate program and other clean energy initiatives.  

Q: Are condos and apartments eligible for this rebate?

  • Yes, condos and apartments are eligible for rebates. Each condo unit or apartment is considered a separate project site and would need a separate application. Please include a copy of the electric bill from the participating unit. For project sites that may be new construction, please refer to our Program Manual for more information.

Q: Can landlords apply for this rebate?

  • Yes, landlords can apply for this rebate. Each apartment unit is considered a separate project site and would need a separate application. Each project site is eligible for a rebate of up to $2,000.

Q: Do I have to have a home energy audit completed before I apply?

  • No, however, you do have to have a home energy audit scheduled before applying. If you live in a region with a scheduling backlog, forwarding us the confirmation that you are in queue for scheduling will suffice in lieu of the audit.

Q: Do condos or apartments require an energy audit? 

  • Yes, if the complex has 1-4 units, an energy audit is required for each participating unit.  However, energy audits are waived for buildings with 5 or more units as Mass Save does not offer energy audits for single units inside residential complexes/facilities with 5 or more units.

Q: I receive my electricity from a municipal light plant and I’m not eligible for a MassSave home energy audit, do I still need an energy audit?

  • Yes! Most municipal light plants also provide free home energy audits to their patrons.

Q: Does MassCEC offer energy audits? 

  • MassCEC does not offer energy audits. Free residential energy audits can be schedules through MassSave by calling 866-527-7283. Please refer to our Program Manual for more information regarding energy audit requirements. Most municipal light plants also provide free home energy audits to their patrons. Please contact your municipal light plant directly for more information.

Q: What is the difference between the 120 percent and the 80 percent Income-Based Rebates? 

  • The 120 percent Income-Based Rebate is offered to households with income below 120 percent of the state’s median income. The total eligible rebate is increased to $750/single-head unit or $750/heating ton for central and multi-head units. This rebate amount is capped at $3,000. Please refer to our page on Income-Based Rebates as well as the Program Manual, section 2.3, for more information on income thresholds.

Q: How can the system owner apply for the Income-Based Rebate? 

  • System owners can apply using one (1) of the three options below:

  1. Submit an electric bill with a low-income rate code, denoted by an R2 or R4.  
  2. Submit a fuel assistance letter dated from within one year.
  3. Complete the MassCEC income verification, through the MassCEC’s income verification portal.

      Please refer to our page on Income-Based Rebates as well as the Program Manual, section 2.3, for more information on income verification methods.

The Residential Air-Source Heat Pump program is part of a suite of MassCEC Clean Heating and Cooling programs. MassCEC recently authorized $48 million in funding for these programs through 2020.


Please click here to download the residential air-source heat pump projects database

For questions on the Residential ASHP Program, please contact us at or call 617-315-9300.