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window.com

Every window rebate in your ZIP, in one place.

Federal, state, and utility programs — kept current against IRS, ENERGY STAR, and DSIRE. No PDFs to dig through.

Rebates for 02139 — Cambridge, MA

7 active programs
State

Mass Save · Heat Loan

0% financing up to $50k for ENERGY STAR window upgrades. Stackable with utility rebates below.

$50,0000% APR · 7 yrs
Utility

Eversource Whole-Home Incentive

Per-window incentive when a HEAT-certified contractor installs U-factor ≤ 0.22. Pre-approval required.

$75per window
Federal

IRS Section 25C — historical

Expired 2025-12-31 for new installs. Carry-forward applies if you placed in service before that date.

$600cap · expired
Municipal

Cambridge Sustainability Grant

Owner-occupied homes < 4 units. Must combine with insulation upgrade.

$1,500per project

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