What Big Lake Homes Need From a Replacement Window
ENERGY STAR groups Sherburne County into its Northern zone, which is the U-factor and SHGC target worth checking against any quote you get in Big Lake. The longest-licensed window contractors based in Big Lake are listed below the climate data.
Licenses checked · Minnesota Department of Labor and Industry
6AIECC climate zone · ENERGY STAR Northern zone
What zone 6A means for a Big Lake window
Minneapolis-St. Paul-Bloomington, MN-WI runs a January average near 13°F and climbs to about 72°F by July, a swing that adds up to roughly 8,174 heating degree days most winters, with 569 on the summer cooling side of the ledger.
That load is the actual argument for paying up for a better U-factor in Big Lake, separate from anything a brochure claims.
Zone 6A's requirement is the floor; Big Lake's specific load is what tells you whether beating that floor is worth the extra cost.
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 8.1 mi away.
Storm and weather risk around Big Lake
FEMA scores Sherburne County's winter-weather risk as Relatively Low and its flood risk as Relatively Low.
Winter risk in Big Lake weighs on U-factor and condensation resistance; flood risk weighs more on sill height and drainage detailing than on the glass package.
Treat these as two separate conversations with a Big Lake contractor, not one.
- Strong wind
- Relatively High
- Winter weather
- Relatively Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Big Lake window bids come in
- How to Read an NFRC Window Label Four numbers on one sticker decide most of a window's real-world performance. Here's what each one means.
- ENERGY STAR Window Criteria by Climate Zone ENERGY STAR splits the country into four zones, each with its own numbers. Here they are, and why the Northern zone works backward from the other three.
- Impact Windows vs. Shutters in Florida's Hurricane Zones Florida gives homeowners two paths to a protected opening. Here's how each one is tested, and where the HVHZ raises the bar further.
Window installers with the longest license records in Big Lake
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- Lund Window And Door LLCVerify license
- Clear North Windows LLCVerify license
- Windows Ez LLCVerify license
- Aspen Windows And DoorsVerify license