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Key Takeaways

Window Insulation Kits Comparison

Best Overall

Runner-Up

Best Bang for the Buck

Best for Outdoor Use

Best Insulation Tape

Best for Multiple Windows

How We Tested the Best Window Insulation Kits

What to Consider When Choosing a Window Insulation Kit

FAQs

Meet the Tester

Window insulation kits offer an affordable way to cut the cost of your energy bill and make your home less drafty. For those who can’t afford to replace their windows, these kits are a great alternative.

Most window insulation kits work the same way, by attaching a sheet of heat-shrink plastic or other insulating material to the window panes with double-sided tape or magnetic strips. But since they don’t all perform equally well, we put several of the most popular options to the test in our own homes.…