Two real programs, the exact conditions, every figure dated and sourced, and the one credit that no longer exists. We re-check this page against the published utility terms every month and log every change below.
The federal window tax credit expired December 31, 2025. It is not available for windows installed in 2026. If a quote you are looking at includes a federal tax credit, the number at the bottom of that quote is wrong.
Paid per window.
| Home type | Rebate |
|---|---|
| Electrically heated homes | $50 per window |
| Centrally cooled homes | $30 per window |
| Dual fuel heat pump homes | $30 per window |
Applications are due within 180 days of the installation being completed. Approved rebates are issued within 14 business days after review.
This program moved from a per-square-foot structure to a per-window structure effective February 27, 2026. The dual fuel heat pump tier applies to installations on or after that date.
Read the published terms from Rocky Mountain Power
Every figure and condition above was checked on 2026-08-27 against the published Rocky Mountain Power terms at that link. When the utility changes its terms, this section changes on the next monthly verification and the change log below records it.
Paid per square foot of window area.
| Home type | Rebate |
|---|---|
| High performance insulating windows | $2.50 per square foot |
The rebate request must be postmarked within 6 months of the installation date. The 2026 promotion runs 01/01/2026 through 12/31/2026.
Read the published terms from Enbridge Gas
Every figure and condition above was checked on 2026-08-27 against the published Enbridge Gas terms at that link. When the utility changes its terms, this section changes on the next monthly verification and the change log below records it.
Both programs draw the same line: a U-Factor of 0.22 or lower on the NFRC sticker. Both are for existing homes only. One pays per window, one pays per square foot, so which is worth more to you depends on the size of your glass rather than on the count.
Keep every NFRC sticker and every itemized invoice. Those two pieces of paper are what the applications are built around, and they are the most common reason a rebate stalls.
Rebate approval is made by the utility, not by Lone Peak Windows. Program terms are set by the utilities and change with notice. These figures were checked against the published program terms on the date shown above, and we check them again every month. We will tell you honestly whether the glass package you are quoted qualifies.
No. The federal tax credit for energy efficient windows expired on December 31, 2025, and it does not apply to windows installed in 2026. If a quote includes it, the number at the bottom of that quote is wrong.
0.22 or lower on the NFRC sticker, for both programs. Rocky Mountain Power also requires the window to be ENERGY STAR rated. There is no partial credit above 0.22 under either program.
It pays per window: $50 per window on electrically heated homes, and $30 per window on centrally cooled homes and on dual fuel heat pump homes. Existing single-family homes only, on rate schedule 1, 2, or 3. Applications are due within 180 days of the installation being completed.
It pays $2.50 per square foot of window area on qualifying windows, for existing homes with primary gas heating on a GS rate schedule. The rebate request must be postmarked within 6 months of the installation date, and the 2026 promotion runs 01/01/2026 through 12/31/2026.
They are separate programs from separate utilities with separate applications, so they are not exclusive of each other. A home with primary gas heat on an Enbridge GS rate schedule and central cooling served by Rocky Mountain Power can meet both sets of conditions. Approval is always the utility's decision.
Keep the NFRC sticker from every window and the itemized invoice. ThermWise asks for the dimensions of every installed window, the original or a copy of each NFRC sticker, a recent Enbridge Gas bill, and an itemized invoice showing the contractor, dates, manufacturer, model, dimensions, U-Factor, price, and proof of payment. Losing the stickers is the most common way people lose this money.
Every verified change to the utility terms, newest first. If it is not listed here, it did not change.
Every job is installed, warrantied, and financed by a licensed Utah window dealer, and every customer signs directly with that dealer. Lone Peak Windows never touches your money. Every in-home sale comes with written three-day cancellation rights. And we only get paid when a deal is real, so nobody standing on your porch has a reason to pressure you into one that isn't.
Serving Highland, Alpine, Lehi, American Fork, Cedar Hills, Pleasant Grove.