Renovations & Additions

Build energy efficiency into your renovation or addition to drive comfort and savings.
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Get start-to-finish support from a certified HERS rater to help you optimize design, select efficient technologies, and access incentives for your renovation or addition.

The Sponsors of Mass Save provide incentives for incorporating energy-efficient upgrades to renovations or additions of existing homes in Massachusetts. Eligible upgrades may include, but are not limited to:

  • Insulation
  • Heating, ventilation, and air conditioning
  • Water heating equipment
  • Air and duct sealing

 

 

In alignment with the Commonwealth’s climate policy and goals, the Sponsors of Mass Save are discontinuing incentives for homes that utilize equipment powered by natural gas, oil and propane. Projects enrolled in the Renovations & Additions program must be submitted for incentive processing by September 30, 2024, to receive incentives for natural gas, oil or propane equipment. As of October 1, 2024, only electrification equipment and improvements to the thermal envelope will be incentivized. Contact [email protected] for more information.

Single-family (1-4 units)
Tier Base All-Electric Base  Level 1 Level 2
Overview All major renovations and additions may be eligible, including projects that retain existing fossil fuel systems. Additions must be all-electric. All major renovations and additions may be eligible if they have all-electric heating, water heating, cooking and clothes drying. All-electric heating, water heating, cooking, and clothes drying in the renovated home and any additions. All-electric heating, water heating, cooking, and clothes drying in the renovated home and any additions.
Performance Specifications ≥5% savings above
baseline		 ≥5% savings above
baseline		 ≥30% savings above Baseline or HERS ≤55
Air infiltration: ≤5 ACH50 Ventilation: HRV/ERV optional
EV-Charging Ready: optional		 ≥ 50% savings above Baseline or HERS ≤45 Air infiltration: ≤3 ACH50 Ventilation: HRV/ERV Required
EV-Charging Ready: required
Incentives Pay-for-Savings (PFS):
($0.30/kWh) +
($30/Mmbtu) +
(% savings x $2,500)
[Max PFS incentive of
$5,000 + max $5,000 Adders = total $10,000 max]		 Pay-for-Savings (PFS): ($0.40/kWh) +
(% savings x $3,000)
[Max PFS incentive of
$5,000 + max $10,000
Adders =
total $15,000 max]		 Single-family: $20,000
2-unit: $30,000
3-unit: $40,000
4-unit: $50,000		 Single-family: $30,000
2-unit: $40,000
3-unit: $50,000
4-unit: $60,000
Market Transformation adders* Air Source Heat Pump (partial): $1,125/Ton (Base tier only)
Air Source or Air-to-Water Heat Pump (whole home): $2,650/ton up to $8,500 (All-Electric Base tier only)
ENERGY STAR® Certified Ground Source Heat Pump (partial): $2,000/Ton (Base tier only)
ENERGY STAR Certified Ground Source Heat Pump (whole home): $13,500/unit (All-Electric Base tier only)
Wi-Fi Connected Thermostat: $100/unit
Induction Cooktop: $500/unit
Heat Pump Clothes Dryer: $200/unit
DOE Zero Energy Ready Homes Certification: $250/unit
ENERGY STAR NextGen Certification: $250/unit
*The Market Transformation adders are designed to encourage participants to incorporate emerging equipment technology into their residential projects to drive higher building performance while offering enhanced occupant experience. Participants receiving Market Transformation adders or Level 1 or 2 incentives are not eligible to also receive equipment rebates through the Mass Save Heating & Cooling program or any other retail rebate paths. Adders are also available for advanced certifications from the Department of Energy and ENERGY STAR

 

Learn more about how incentives are calculated in the Pay-for-Savings approach.

  1. Confirm Eligibility
    View the Eligibility Tab to confirm the eligibility requirements.
  2. Get started.
    Contact a Sponsor-approved Home Energy Rating System (HERS) rater or fill out an Interest Form. If you have questions, please call us at 1-866-527-SAVE (7283) or email [email protected].
  3. Schedule a preliminary site visit.
    This visit will be completed by the HERS rater you choose to work with and should take place prior to the start of construction or demolition of your home. Contact a Sponsor-approved certified HERS rater to schedule this site visit.
  4. Have a site visit.
    Your HERS rater will review your plans, conduct diagnostic testing as needed, and may recommend additional energy efficiency upgrades. Afterward you will receive a report summarizing the estimated savings and incentives your project will receive.
  5. Schedule insulation inspection.
    This visit takes place at the midpoint of construction, after you have installed new insulation but before wallboard has gone up. This is an important step, contact your HERS rater to schedule your insulation inspection.
  6. Schedule a final inspection.
    As you near completion, set up a final site visit with your HERS rater. They will conduct a final walkthrough of the home, perform diagnostic testing and finalize all the details of the energy model.
  7. Receive Your Incentive
    After the final inspection is processed, you’ll receive an incentive completion notification and a post-participation survey via email. Within 10–12 weeks of your final inspection, you will receive an incentive check in the mail.

Residential renovations and additions to single- and multi-family homes with three stories or less may be eligible if:

  • They are located within Sponsor service territories
  • Renovations are extensive and consist of 50% or more of the original home undergoing renovation. Additions must meet a minimum of 500 square feet total floor area.
  • A Sponsor-approved certified HERS Rater conducts a preliminary site visit at your home prior to the start of construction or demolition
  • Incentives are not available for new or replacement heating and hot water equipment powered by natural gas, propane or oil.
  • Customers receiving Renovations & Additions incentives are not eligible for equipment rebates (e.g. heat pumps) through the Mass Save Heating & Cooling programs.

The Sponsors of Mass Save offer 0% financing HEAT Loans to make energy efficiency upgrades more affordable to Massachusetts residents. Through this loan, you could qualify for a loan up to $25,000 toward qualified home improvements.