50 Year Warranty

AHT Wisconsin Windows wants you to have confidence and peace of mind when it comes to your windows and doors. We believe our Composite replacement window systems and entry doors are the best there is, with superior quality and performance.

That’s why we can confidently offer our customers a full 50-year warranty on both materials and workmanship for our windows and doors.

The warranty is not pro-rated and is fully transferable if you sell your home. We simply want you to know that, if you ever have a problem with replacement windows or doors installed by AHT Wisconsin Windows, we’ll be there to take care of it.

That’s the kind of guarantee you deserve.


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We’d be happy to provide a free estimate. Just call us toll-free at (888) 874-9339, or click here to schedule a free, no-obligation in-home estimate.