How You Can Tell If Your Windows Are Energy Efficient?

Are your windows energy inefficient? They might be, especially if they’re older. Windows that are more than two decades old (and even some younger) are likely to be far less efficient than windows that are made today. Knowing the signs that your windows are inefficient, and making a plan to address this problem can help you save money and make your home more comfortable at the same time. Here’s what you need to know.

Signs of Energy Inefficiency

More than likely, if your windows are inefficient, there will be multiple ways that you can tell.

  • Your windows freeze – on the inside. Have your windows ever formed a layer of ice on the inside of your house? This is a definite sign that your windows are inefficient, and are almost certainly making the temperature in your home difficult to control.
  • You feel drafts near your windows when it’s cold outside. Stand near your windows in the winter. You should not feel a chill or a draft coming from the general direction of the windows. If you do, this could be because of gaps between the window and the frame, causing serious air leaks in your home.
  • Rooms with lots of windows get stuffy when exposed to intense direct sunlight. If your windows are not properly insulated, you’ll feel warm and stuffy standing near them when it’s warm outside. This happens because of infrared rays entering the home when the sun is shining in.

What You Can Do to Improve Window Efficiency

There are a few things you can do to improve your window’s efficiency. What you choose to do should depend on your budget, the severity of your problem, the age and condition of your windows and how long you’d like your solution to last.

Weatherstrip Your Windows

Install weatherstripping around your windows to seal gaps and prevent air leaks. Weatherstripping is a low-cost solution that can save you money, as long as you replace the weatherstripping on a periodic basis. It doesn’t last very long. Most weatherstripping needs to be replaced every few years.

Caulk and Seal Around Your Windows

Caulking around windows prevents air leaks by sealing gaps, but caulking doesn’t last forever. Check the caulking around your windows – inside and outside – and replace caulking that has cracked or broken. This can be a time-consuming process, so you can also hire a handyman or a contractor to do the work.

Replace Your Windows

Replace your old windows with Renewal by Andersen of Long Island’s replacement windows. Our dual-pane windows are made with long-lasting Fibrex frames and low-e glass to prevent transmission of heat throughout the year. That helps your home remain a comfortable temperature, even when the temperature outside is very hot or very cold.

Is It Time to Replace Your Windows? Contact Renewal by Andersen of Long Island

If you’ve got the budget to replace your windows, and your current windows are very inefficient, contact Renewal by Andersen of Long Island. To make an appointment, call our toll-free number at (866) 609-5033 or fill out the short form on this page.


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  • The Difference Between Replacement and New Construction Windows!
  • The Different Kinds of Frame Materials and What That Means to Your Windows’ Performance and Longevity!
  • How the Right Glass Can Save You Money on Your Heating & Cooling Bills!
  • The Critical Role Proper Installation Plays in the Performance, Durability and Warranty of Your New Replacement Windows!
  • What Features and Options are Important to You and What Role They Play in Your Ultimate Satisfaction Today, and for as Long As You Live in Your Home!
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