Replacement Window Tax Credits in Pennsylvania: What’s Still Available in 2026

What WAS Available: The Federal 25C Tax Credit

The 25C Energy Efficient Home Improvement Credit — part of the Inflation Reduction Act — ran through December 31, 2025. Here’s what it covered:

• Amount: 30% of qualifying window costs (materials only — labor was not included)
• Cap: $600 per year for windows and skylights combined
• Qualifying standard: ENERGY STAR Most Efficient criteria — U-factor ≤ 0.20, SHGC ≤ 0.22 (south-facing exemptions applied)
• Expiration: December 31, 2025 — no renewal has been signed as of May 2026

What’s Available NOW in 2026 for Pennsylvania Homeowners

The federal tax credit is gone — but these three options are active right now:

1. PECO and PPL Utility Rebates

PECO and PPL run rebate programs for qualifying energy-efficient window upgrades. These are not tax credits — they’re paid by your utility company, not the IRS. The distinction matters: rebates reduce your upfront project cost directly.

• Current deadline: May 31, 2026 — this is a hard cutoff for the current rebate cycle
• Amount varies based on window U-factor rating and your utility territory
• ENERGY STAR certification required
• YBR checks your address against the PECO/PPL territory map on the call — the territory line cuts through Bucks County neighborhoods

2. Property Assessed Clean Energy (PACE) Financing

Pennsylvania has active PACE programs that allow energy efficiency improvements — including window replacement — to be repaid through your property tax bill. PACE is not a grant or rebate, but it provides 100% project financing at favorable terms with no upfront cost.

3. ENERGY STAR Manufacturer Rebates

Some window manufacturers offer direct rebates on ENERGY STAR certified products. Availability depends on the product line and manufacturer. YBR can identify qualifying products and provide the documentation needed to submit rebate claims.

Will Congress Bring Back the 25C Credit?

As of May 2026, there is no signed legislation restoring the 25C window credit for the 2026 tax year. If this changes, YBR will update this page.

What Makes a Window “Qualifying” for Utility Rebates

Not all windows qualify. Here’s what PECO and PPL programs typically require for Bucks County homes:

Specification	Required Value	Why It Matters
U-factor	≤ 0.27 (whole-window)	Measures heat transfer — lower is better insulation
SHGC	≤ 0.25	Solar Heat Gain Coefficient — controls solar energy entry (Zone 4A, Bucks County)
ENERGY STAR	Certified label required	Most utility programs require ENERGY STAR certification

YBR specifies window products that meet these requirements for Bucks County’s climate zone (Zone 4A — Mixed-Humid). We provide the paperwork for utility rebate submissions.

What YBR Covers on the 30-Minute Call

A free 30-minute call with YBR covers:

• Confirm your utility (PECO vs. PPL — the territory line runs through Bucks County neighborhoods, and two houses on the same street can be on different utilities)
• Confirm which rebates apply to your specific address
• Identify qualifying window products with ENERGY STAR certification documentation
• Advise whether your project scope and timeline can hit the May 31 rebate deadline

Frequently Asked Questions