European Windows & Doors in Denver, CO
Tilt-turn windows, folding glass walls and lift & slide doors — made to order in the EU to your exact openings and shipped to Denver, Colorado. Installed by your contractor or an independent local installer.
What we ship to Denver
Local code check
Window energy rules in Denver, CO
- County
- Denver
- IECC climate zone
- 5B
- Energy code for new homes
- 2025 Denver Energy Code (2021 IECC based)
- Max window U-factor allowed
- 0.27
New homes in Denver need windows rated U-0.27 or lower. SwingTilt's triple-pane tilt-turn windows have a U-factor of 0.19 — 30% below that limit — and our double pane (0.27) meets it too.
Denver's limit drops to 0.25 when window glass equals 15% or more of the home's floor area. Colorado also requires windows sold in the state since 1/1/2026 to be U-0.30 or lower.
Checked October 2026. Codes change; confirm with your local building department before you build. Need window specs for your permit? Ask us before you order. Climate zone per IECC 2021 Table R301.1. Sources: denvergov.org, denvergov.org, denvergov.org
Built for your climate
Keep the heat in, keep the cold out in Denver
In Denver, Colorado, winters here punish weak windows. SwingTilt's multi-chamber frames and triple pane reach a U-factor of 0.19 — below the 0.22 that ENERGY STAR requires in its coldest zone — cutting drafts, cold spots and condensation while lowering heating bills.
- U-factor 0.19 with triple pane
- Triple pane eliminates cold spots and condensation
- Airtight multi-point seals stop every draft
Also serving near Denver
Denver window FAQ
- Do you install European windows in Denver?
- We install ourselves in the Springfield, Missouri area. For Denver, we make your windows and doors to order and ship them to you; your contractor or an independent local installer puts them in.
- How much do European windows cost in Denver?
- Every window is made to your exact sizes, so price depends on size, glass and finish. Request a free quote and we'll price your project, including shipping to Denver.
- How long do European windows take to get?
- Because each window is made to your exact opening in the EU, plan on about 12 weeks from approval to delivery — and you can track every stage online.
- What window U-factor does Denver require?
- Under the 2025 Denver Energy Code (2021 IECC based), new homes in Denver (IECC climate zone 5B) need windows rated U-0.27 or lower. SwingTilt's triple-pane windows have a U-factor of 0.19.