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What’s the Best Time of Year to Replace Windows?

Written By: Stephanie Vanderbilt, Owner
Reviewed By: Coastal Windows & Exteriors
Last updated: July 15, 2026
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There’s no single best time, window installation can happen year-round with the right team. That said, some seasons offer specific advantages worth knowing.

There’s no single best time, window installation can happen year-round with the right team. That said, some seasons offer specific advantages worth knowing.

How to think about timing your window replacement:

  • Fall Gets Ahead of the Worst Weather: Replacing windows in September or October locks in energy efficiency before the coldest months arrive and heating costs peak.
  • Spring Offers Peak Scheduling Flexibility: Late March through May brings mild temperatures and high contractor availability, making it a popular window for larger projects.
  • Winter Installation Is Fully Viable: Modern installation techniques and materials handle cold temperatures well. Our team installs year-round, and winter projects often have faster scheduling lead times.
  • Summer Is Efficient for Custom Orders: If you’re ordering custom-sized or specialty windows, a summer consultation allows lead time to land well before fall.
  • Don’t Let the Season Delay a Problem: Broken seals, condensation between panes, and drafts signal windows that are actively losing energy. Waiting for a “better season” costs money every month.
  • Energy Bills Reward Early Action: At roughly $600 per month in energy costs for Massachusetts households, every month of delay with drafty windows adds to your annual heating and cooling bill.

What’s the Best Time to Replace Windows?

  • Top Recommendation: Fall is ideal, stop energy loss before winter and schedule while slots are still available.
  • Best for Custom Projects: Book in spring or summer to allow production lead time before the next heating season.
  • Best for Urgent Needs: Don’t wait, contact Coastal Windows & Exteriors any time of year for a free same-week consultation.

Ready to get your windows on the calendar? Request a free estimate today and ask about current promotions.

Coastal Windows & Exteriors is a woman-owned exterior remodeling company, with 7,000+ installations across MA, NH, and ME.

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Browse our complete window FAQ guide from Coastal Windows & Exteriors.

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Still have questions about What’s the Best Time of Year to Replace Windows? See the areas we serve and talk to your local windows contractor.

Last Updated: July 2026

Sources:

  • Massachusetts households spend roughly $600 per month on energy bills. Boston.com Massachusetts Utilities: Gas, Electric, Phone Report — A 2024 report on average monthly utility costs for Massachusetts households including gas and electric expenses. (2024)

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