How Can I Make My Windows More Energy Efficient


Since windows are very expensive, it makes no sense to replace them just to increase the energy efficiency of your home. The good news is that you can make old windows more efficient, so you save money on your energy bills and make your house more comfortable.

Old windows usually have air leakage around them. You can use weatherstripping or caulk to inexpensively seal any gaps or cracks. While these are long-lasting solutions, check windows every year to make sure they’re still sealed.

Window Treatments

Thick drapes will improve the energy efficiency of your windows. In the winter, they reduce the amount of heat leaving your home. In the summer, they prevent the sun from warming your house through the windows. On sunny winter days, you can open the drapes to let the sun heat your residence for free.

Window Film

You can apply window film to reduce how much the sun heats your home. You can install window film either temporarily or permanently. Temporary window film is preferable in cold climates, as you can remove it in the winter to let the sun heat your house.

Storm Windows

Unlike in years past, modern storm windows can be permanently installed. Your windows will still be operable, and you’ll save between 15%-30% on your heating and cooling costs. Storm windows serve as a buffer against bad weather and reduce air leakage, too.


You can install awnings above your windows to block the sun. They should be installed on southern- and western-facing windows. You should buy awnings made with durable materials, such as synthetic fabrics. To let the sun in during the winter, buy roll-up awnings.

McFarland Indoor Comfort Services in Granite City, IL, helps customers increase the energy efficiency of their homes. We repair, replace, and maintain heaters and air conditioners. We’re also the company to call for indoor air quality, HVAC design, and sheet metal fabrication. Call McFarland Indoor Comfort Services today to schedule an appointment.

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