Best Time of Year to Replace Windows
Window replacement is one of the higher-impact upgrades you can make to a home, but timing matters more than most homeowners realize. The season you choose affects installation conditions, contractor availability, lead times on materials, and how quickly your home starts seeing energy savings. For homeowners in Thurston County, local weather patterns add another layer to that decision.
The best windows for your home are only part of the equation. Here is what to consider when planning your replacement project:
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Late spring and early summer tend to offer the best combination of mild weather and flexible scheduling
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Fall is a strong second option, especially if you want to lock in efficiency gains before the heating season
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Winter installations are possible and sometimes discounted, but wet Pacific Northwest conditions can complicate the process
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Summer is peak season, so expect longer lead times and tighter contractor availability
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Planning 4 to 6 weeks ahead gives you more product options and a smoother install
What the Numbers Say
The case for window replacement goes beyond comfort. According to the U.S. Department of Energy, heat gain and heat loss through windows account for 25 to 30 percent of residential heating and cooling energy use. Replacing single-pane windows with Energy Star certified units can reduce energy bills by an average of $101 to $583 per year depending on climate zone and home size. In the Pacific Northwest, where heating season runs long, that payback compounds over time.
On the resale side, Remodeling magazine's Cost vs. Value report consistently shows window replacement recovering roughly 68 to 72 percent of project cost at resale, making it one of the stronger return projects in the exterior category. Timing your installation for spring or early fall also means your home starts capturing those efficiency gains before the next heating season kicks in.
JWILCO installs replacement windows throughout Thurston County. If you are planning a project, reach out to get on the schedule before the busy season fills up.
FAQ
What is the best season to replace windows in the Pacific Northwest?
Late spring through early fall is the most practical window in Western Washington. Mild temperatures and lower rainfall make for cleaner installs and faster curing for any sealants and caulking used around the frame.
Can windows be replaced in winter?
Yes, winter installations happen regularly. Contractors can work around rain with proper staging and protection, and some homeowners find better availability or pricing in the off-season. Cold and wet conditions do require more preparation, so it is worth discussing with your installer.
How far in advance should I schedule window replacement?
4 to 6 weeks is a reasonable minimum. Custom window orders can take longer depending on the manufacturer, and scheduling during peak season, typically summer, may push that out further.
Will new windows actually lower my energy bills?
Modern double or triple-pane windows with low-E coatings significantly reduce heat transfer compared to older single-pane or degraded double-pane units. The U.S. Department of Energy estimates windows are responsible for up to 30 percent of home heating and cooling load, so the impact of upgrading can be substantial depending on your current setup.
Does JWILCO serve my area in Thurston County?
JWILCO handles window installation projects throughout Thurston County, Washington. Contact us to confirm your location and get a project estimate.