Google's Top-Rated Window Pros Near Missoula, MT
Missoula's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 6B sets the energy bar for a Missoula window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
6BIECC climate zone · ENERGY STAR Northern zone
Climate and energy performance in Missoula
Missoula, MT piles up about 7,183 heating degree days in a normal year, against 340 on the cooling side of the ledger.
That's the load an ENERGY STAR-rated window in the Northern zone is built to handle.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 3.2 mi away.
Google's top window installers serving Missoula, MT
Ranked by Google rating weighted against how many people left one, so a perfect score from a handful of reviewers never outranks a strong average built on hundreds. That ranking is not a license check; call the state directly and ask for the contractor's license or registration number.
| Rank | Business | Google rating | Reviews | Category | Area | Google Maps listing |
|---|---|---|---|---|---|---|
| 1 | Legacy Glass | 84 | Window installation service | Lolo 59847 | Google reviews | |
| 2 | Integrity Window & Door | 53 | Window installation service | Missoula 59801 | Google reviews | |
| 3 | Tabish Siding and Windows | 16 | Window installation service | Missoula 59801 | Google reviews | |
| 4 | Grizzly Siding & Windows | 6 | Window installation service | Missoula 59801 | Google reviews | |
| 5 | Knights Auto Glass And Ceramic Window Tinting Lowest Price Guaranteed | 60 | Window installation service | Missoula 59801 | Google reviews | |
| 6 | NTY Windows | 6 | Window installation service | Missoula 59804 | Google reviews | |
| 7 | Sierra Pacific Windows | 13 | Window supplier | Missoula 59808 | Google reviews | |
| 8 | DaBella | 500 | Window installation service | Missoula 59808 | Google reviews | |
| 9 | Glass Doctor of Missoula | 148 | Window installation service | Missoula 59802 | Google reviews | |
| 10 | Garden City Paint & Glass | 28 | Window installation service | Missoula 59801 | Google reviews |
Questions to ask before you sign
- How long have you held your state license, and can I see the number?
- Is this a full-frame replacement or an insert into my existing frame, and why that one?
- Who pulls the permit, and does this change trigger an egress check on a bedroom window?
- What flashing and sill pan will you use, and in what order do you install them?
- If my home was built before 1978, is your crew lead-safe certified for this job?
- What's the completion date in writing, and what happens if the schedule slips?