Window Rebates & Tax Credits · Northern Colorado
Window Rebates & Tax Credits in Northern Colorado (2026)
The federal credit for new windows has ended, but if your home gets its electricity from the city utility in Fort Collins, Longmont, Loveland or Estes Park, a local rebate still pays you back for energy-efficient windows and doors. We install qualifying windows and file the paperwork for you.
Is there still a tax credit for new windows in 2026? No. The federal Energy Efficient Home Improvement Credit ended for windows and doors placed in service after December 31, 2025. Local utility rebates still apply for residential electric customers of the city utilities in Fort Collins, Longmont, Loveland and Estes Park: $3.75 per square foot for Tier 1 windows and $5.00 for Tier 2, with qualifying doors at $3.75. Northern Lights Exteriors installs ENERGY STAR® Northern climate zone windows that meet those tiers and submits the rebate paperwork, with every step tracked in our secure client portal.
Ended for windows installed after 12/31/2025
$3.75–$5.00 per sq ft
Fort Collins, Longmont, Loveland, Estes Park
Filed by us
Secure client portal
5-year installation
Window Incentives in Northern Colorado: What Still Applies in 2026
For 2026 window projects, the federal credit is gone and local utility rebates are the incentive that still pays.
| Incentive | 2026 status | Who qualifies | Amount |
|---|---|---|---|
| Federal Energy Efficient Home Improvement Credit | Ended for windows and doors placed in service after Dec. 31, 2025 | No longer available for new installs | — |
| Local utility rebate: windows & sliding glass doors, Tier 1 | Available | Residential electric customers of the four city utilities below | $3.75 per sq ft (ENERGY STAR® Version 6, Northern zone) |
| Local utility rebate: windows & sliding glass doors, Tier 2 | Available | Same | $5.00 per sq ft (ENERGY STAR® Version 7, Northern zone) |
| Local utility rebate: exterior doors | Available | Same | $3.75 per sq ft (ENERGY STAR® Northern zone) |
Rebate values shown are effective January 1, 2026. Programs can change, so we confirm current amounts for your address before you order.
Who Qualifies for a Window Rebate?
You qualify if your home is a residential electric customer of one of these four city utilities, your home is at least one year old, and the windows meet the ENERGY STAR® Northern climate zone tier:
- Fort Collins Utilities — see Fort Collins window replacement
- Longmont Power & Communications — see Longmont window replacement
- City of Loveland Utilities — see Loveland window replacement
- Estes Park Power & Communications — see Estes Park window replacement
Rebates are available for residential and multi-family/tenant properties. Outside these four cities, rebate programs vary by utility; we check what is available for your address when we quote.
Not a rebate, but worth knowing: Northern Lights Exteriors is an authorized RENU contractor, so qualifying window and door projects can also be financed through Colorado’s RENU energy loan — up to 20 years, with no money down. How RENU works.
How Much Is a Window Rebate Worth?
The rebate is paid per square foot of window, so a typical 3-by-5-foot window (15 sq ft) earns about $56 at Tier 1 or $75 at Tier 2.
| Project | Window area | Tier 1 ($3.75/sq ft) | Tier 2 ($5.00/sq ft) |
|---|---|---|---|
| 1 window (3 × 5 ft) | 15 sq ft | $56.25 | $75.00 |
| 8 windows | 120 sq ft | $450 | $600 |
| 20 windows | 300 sq ft | $1,125 | $1,500 |
Examples assume 3-by-5-foot windows; actual rebates follow the measured size of each window. Total incentives are capped at $2,500 without pre-approval and can go higher when the project is pre-approved before work starts; incentives cannot exceed 100% of the project cost.
Rebate Rules and Deadlines We Handle for You
- 45 days: the application must be submitted within 45 days of project completion.
- Pre-approval over $2,500: larger projects are approved before work begins so the full amount is available.
- Home age: the home must be at least one year old.
- Qualifying products: windows and sliding glass doors must meet the ENERGY STAR® Northern climate zone tier being claimed.
We specify qualifying products, provide the documentation and proof of purchase, and submit the application. You can follow every step, from contract and permits to install dates, photos, payments and the rebate filing, in your secure client portal.
Recent Rebate-City Window Projects
Real Northern Lights Exteriors projects in the four rebate cities:
- Fort Collins: three recent window projects — 8 Pella Impervia fiberglass windows, 13 Pella Impervia windows and 2 patio doors, and an Old Town home’s Anlin windows — each qualified for an available local utility rebate.
- Longmont: 25 Pella 250 Series windows in Clover Basin Ranch and storm-restoration window replacements.
- Loveland: an 8-window Anlin replacement for a returning client, plus window, door and siding projects.
- Estes Park: 46 Pella Impervia fiberglass windows on a mountain home near Rocky Mountain National Park.
Window Rebate and Tax Credit FAQs
Is there a tax credit for new windows in 2026?
No. The federal Energy Efficient Home Improvement Credit ended for windows and doors placed in service after December 31, 2025. In Fort Collins, Longmont, Loveland and Estes Park, local utility rebates still apply to qualifying energy-efficient windows and doors.
Are new windows tax deductible?
For most homeowners, replacing windows on their own home is a home improvement rather than a deductible expense, and the federal credit for windows ended after 2025. A tax professional can tell you how it applies to your situation; the incentive that still pays in Northern Colorado is the local utility rebate.
Which Colorado cities have window rebates?
Residential electric customers of the city utilities in Fort Collins, Longmont, Loveland and Estes Park can receive window and door rebates. Outside those cities, rebate programs vary by utility, and we check what is available for your address when we quote.
How much is the window rebate?
Windows and sliding glass doors earn $3.75 per square foot at Tier 1 (ENERGY STAR Version 6, Northern zone) or $5.00 per square foot at Tier 2 (Version 7), and qualifying exterior doors earn $3.75 per square foot. A typical 3-by-5-foot window earns about $56 at Tier 1 or $75 at Tier 2.
Is there a limit on the rebate?
Total incentives are capped at $2,500 without pre-approval and can go higher when the project is pre-approved before work starts. Incentives cannot exceed 100% of the project cost.
Do you file the rebate paperwork?
Yes. Northern Lights Exteriors specifies qualifying windows, provides the documentation and proof of purchase, and submits the application within the 45-day window after completion. You can follow the filing in your secure client portal.
Do doors qualify for the rebate too?
Yes. Sliding glass doors are rebated with windows at $3.75 or $5.00 per square foot by tier, and qualifying exterior doors earn $3.75 per square foot.
See What Your Window Project Qualifies For
We will measure, recommend qualifying windows and show you the estimated rebate on your line-item quote.
Check My Rebate Eligibility → Window replacement cost guide · Financing
