Window & Door Rebates
Replace single-pane windows with ENERGY STAR "Most Efficient" glass and get Mass Save rebates of $75 per window. The 30% federal 25C credit that used to sit on top was repealed on 31 December 2025.
View Rebate AmountsQuick Summary
Why Upgrade Windows & Doors?
Old, drafty windows and doors can account for 25-30% of your home's heat loss.
Lower Energy Bills
Reduce heating and cooling costs by eliminating drafts and heat transfer
Better Comfort
Eliminate cold spots near windows and reduce outside noise
Increased Home Value
New windows are a top home improvement for resale value
2026 Window & Door Rebates
Mass Save pays $75 per window when you replace single-pane glass. The federal 25C credit that used to stack on top was repealed effective 31 December 2025.
| Product | Mass Save Rebate | Federal Tax Credit (ended 2025) |
|---|---|---|
| ENERGY STAR Windows | $75 per window (single-pane replacement) | Ended Dec 31, 2025 |
| ENERGY STAR Doors | No Mass Save door rebate | Ended Dec 31, 2025 |
| Skylights | Varies | Ended Dec 31, 2025 |
Example: 10 Window Replacement
Total Savings
Plus ongoing energy savings of $200-$400/year
What Qualifies for Rebates?
Windows
- • Must be ENERGY STAR certified
- • Must meet Northern Climate zone requirements
- • U-Factor ≤ 0.25
- • SHGC requirements vary by orientation
- • Replacing existing windows (not new construction)
Doors
- • Must be ENERGY STAR certified
- • Exterior doors only
- • U-Factor ≤ 0.17 (non-glass doors)
- • U-Factor ≤ 0.25 (glass doors)
- • Includes sliding glass doors
How to Get Your Rebate
Get Assessment
Schedule a free Home Energy Assessment
Choose Products
Select ENERGY STAR certified windows/doors
Install
Have windows/doors professionally installed
Submit Rebate
Apply online with receipts and specs
Pro Tips for Window Replacement
Do Insulation First
Windows often make less impact than insulation. Get your Home Energy Assessment to prioritize.
Get Multiple Quotes
Window prices vary significantly. Get at least 3 quotes from reputable installers.
Keep NFRC Labels
You'll need the NFRC (National Fenestration Rating Council) labels to claim rebates.
Consider Triple-Pane
For cold MA winters, triple-pane windows offer better insulation (and may qualify for higher rebates).
Get More Savings Tips
Get our free rebate toolkit plus expert strategies for maximizing your window and door rebates.