Home energy audits in Boston

Amount Standard: 75–100% off approved insulation and no-cost targeted air sealing. Designated Equity Communities: 100% off insulation and air sealing with no income verification. Enhanced (income-verified, 1–4 units): 100% off recommended insulation.

Who qualifies Mass Save customers in 1–4 unit homes, with recommendations from a Home Energy Assessment. The Enhanced tier for a household of 4 is $103,050–$137,399 (2026–2027 season; zip-specific limits may differ).

Amount Whole-home: $2,650 per ton, up to $8,500. Partial-home: $1,125 per ton, up to $8,500, plus a $500 weatherization bonus and a $500 sizing bonus where eligible. Basic: $250 per ton, up to $2,500. Income-based enhanced: 'Up to $16,000 or up to no cost through Turnkey Services'. Mass Save has announced lower rates for 2027 installs: whole-home $2,350 per ton and partial-home $1,000 per ton, each up to $7,500.

Who qualifies Residential customers replacing oil, propane or electric resistance heat (electric-account sponsors) or natural gas heat (gas-account sponsors). Equipment must be ENERGY STAR Cold Climate, installed by a Heat Pump Installer Network contractor between January 1 and December 31, 2026. Paperwork is due by February 28, 2027. Whole-home requires sufficient weatherization, and partial-home requires integrated controls. The sizing bonus requires equipment sized to 90–120% of the home's heating load at the outdoor design temperature, using an ACCA Manual J calculation. Enhanced tier requires prior oil, propane or electric resistance heat.

Amount Not published

Who qualifies Mass Save says instant incentives 'may also be available through distributors and contractors at the point of sale'. Amounts were not verified.

Amount No-cost weatherization, air-source heat pumps 'for up to no cost' (if heating with electricity, oil or propane), and up to 100% of electrical panel upgrades and pre-weatherization barrier removal

Who qualifies 1–4 unit homes. The Mass Save table for 2026–2027 shows the Enhanced band at $103,050–$137,399 for a household of 4, while the page text says 'a family of four with a household income of $132,000 or less may qualify'. Projects are subject to cost-effectiveness screening.

Amount Up to $12,000 in grants plus in-house contractor support, with 0% deferred loans for remaining costs

Who qualifies Boston homeowners aged 60+ who own and occupy a 1–4 family home, with household income ≤80% AMI (120% in Allston or Brighton), and who are current on property taxes, mortgage and water bills. Not a reimbursement program: already-replaced systems are ineligible.

Amount 0% interest, up to $25,000 total over a customer's lifetime (the maximum effective January 1, 2025)

Who qualifies Mass Save customers financing weatherization, pre-weatherization barriers, ENERGY STAR windows (only alongside completed weatherization), ConnectedSolutions batteries, heat pumps and heat pump water heaters. A Home Energy Assessment is required for certain measures, and lender approval is required.

Amount Deferred, interest-free loans up to $50,000 with no monthly payments, due on sale, transfer or refinance. One-third is forgiven after 10 years of owner-occupancy. Covers repairs plus 'energy efficiency, weatherization, and decarbonization improvements'.

Who qualifies Boston owner-occupants of 1–4 family homes or condos in associations of 6 units or fewer, with household income ≤135% AMI. Incomes from 120% to 135% AMI require a 50/50 cost share. Financial assets must be under $100,000, though seniors 60+ are exempt from the asset limit.

Amount Interest-free loans up to $25,000 per homeowner, repaid over up to five years ($9.7 million program)

Who qualifies Homeowners served by a municipal light plant who are not eligible for Mass Save (in this metro, e.g., Wellesley, Belmont, Braintree, Peabody electric customers). A qualifying home energy assessment through Energy New England or NextZero is required first.