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Cut Energy Costs & Lower Your Solar System Size
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Why Replace Your Windows Before or Alongside Solar?
Smaller Solar System
New windows reduce heat gain and loss — lowering your energy load and the number of solar panels you need.
Federal Tax Credits
ENERGY STAR certified windows qualify for the IRA Energy Efficient Home Improvement Credit — 30% of cost up to $600/year.
12% Average Bill Reduction
ENERGY STAR certified windows reduce household energy bills by an average of 12% annually compared to single-pane windows.
Critical for Central Valley Homes
Low-E double-pane windows dramatically cut summer cooling loads — the #1 driver of high electric bills in Fresno, Bakersfield, and Sacramento.
Window Types — Energy Efficiency Comparison
| Window Type | U-Factor (lower = better) | Solar Heat Gain | IRA Tax Credit | ENERGY STAR? |
|---|---|---|---|---|
| Single-Pane | 0.8–1.2 | High | ❌ No | ❌ No |
| Double-Pane (Low-E) | 0.25–0.40 | Low–Medium | ✅ Up to $600/yr | ✅ Yes |
| Triple-Pane | 0.15–0.25 | Very Low | ✅ Up to $600/yr | ✅ Yes |
Sources: EPA ENERGY STAR — Windows, Doors & Skylights | U.S. EIA — Residential Energy Use | IRS / ENERGY STAR — Federal Tax Credits for Windows
Also Interested in Solar?
Replacing windows before solar reduces your system size and improves payback. Get a free home energy estimate — no credit pull, no obligation.
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