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The Home Depot

How Windows Can Save Energy

Pro Referral > Home Guides > Door & Window > How Windows Can Save Energy
How Windows Can Save Energy

Not too many people are aware of exactly how you can save money just by installing certain types of windows or utilizing them differently. That is why we are here today; both to educate you and let you in on some money-saving tips for your home. Windows are often overlooked in the home as a means to save money, but it is completely possible with the right set of windows and a little extra knowledge.


Saving energy not only means helping the worlds overall consumption, but it also means saving some money as well. If your energy bill isn’t as high then you aren’t paying so much out of pocket each month unnecessarily.

  1. Not only do certain types of windows save you money in the end, but you can save just as much money simply by repairing the windows you already own.

    1.Just How Much of a Difference Are We Talking About?

    Well, it is said that the average house that has unweatherized windows can increase the heating bill by about twenty five to forty percent. That is a lot of unneeded money going out the window (so to speak). Considering the already high costs of heating, one should look into how to weatherize windows in order to prevent any heat from escape the home.

  2. 2.Where Should I Start?

    You should begin working on the west-facing windows first, since these are the windows of your home that usually catch all the tough winds. North facing windows will have the coldest air intake so they should be done afterwards. Southern windows are always last when worked on since they face the sun and have the warmest surface area. Of course if you have any windows that visibly let a breeze in or seem to be rattling, those should be the ones you work on first regardless of what direction they are facing.

  3. 3.Locate Any Air Leaks

    Use one hundred percent silicone based caulk (healthier to breath) to fill in any possible air leaks within your home. Air leaking out is one simple way that you end up paying more on your energy bill. Do your best to inspect every window in your home. If there is a window that you never open, consider doing a permanent seal to ensure air stays within the room. Any additional sealing with help.

  4. 4.Check For Any Building Mistakes

    If you insulate the exterior walls of your home, it will help stabilize the indoor temperature. When there is an unheated space like a garage, the floor above it should be insulated to prevent any heat loss. The insulation should be such that there is no space left for air or moisture. While improving your insulation, you could also try to improve your ventilation system.

  5. 5.Types of Insulation

    If there is sealing putty that is missing around some of the window, or perhaps a cracked pane or two you will need to replace the panes or find a better sealing putty to make sure that it is secure. When sealing windows to make them more energy efficient you should not use putty if you have the choice, you should try and go for a plastic glaze compound. Putty dries and cracks easily which is not what you want to be sealing your windows. Glazing compound can last for about ten years before they start cracking like putty would, so it is completely worth the investment. Plus if you use the glazing compound on all of your windows, your energy bill will be lower since there will be no air able to seep out from window cracks. If you find that you have a window that seems to rattle during storms, you will need to properly wind strip it. Check the actual window frame as well since this can be another location where air leaking is present.


    Not only do certain types of windows save you money in the end, but you can save just as much money simply by repairing the windows you already own. Instead of buying all new windows, focus on efficiency and check every window in your home for air leaks and possible parts that need repair.

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