Mikhail Varentsov / Shutterstock.com8. Failing to shrink-wrap windows
Windows — especially inefficient windows — account for a large proportion of the heat that escapes from your home as warm air is lost to the cold glass.
According to Energy.gov:
Heat gain and heat loss through windows are responsible for 25%—30% of residential heating and cooling energy use.
Yet replacing windows — or even adding energy-efficient honeycomb shades or thermal lined draperies — can be prohibitively expensive.
One cheap way to reduce heat loss is to install window film. It resembles plastic wrap and helps retain heat indoors and reflect the sun’s heat from outside, helping with cooling in warmer climates, says Lowe’s, which sells the film. Home Depot also sells it.
Apply it to the inside of the glass, and it can be easily removed when spring rolls around so you can open the window. See Lowe’s for application instructions.
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