Energy efficient widows are an important element to consider in both new and old homes. Heat gain and loss accounts for up to 30% of the cooling and heating in the home. Whether you are choosing windows for a new home or you want to replace old window, it is vitally important that you choose the window that is most energy efficient. If your windows are in a good condition, taking the necessary steps to reduce energy loss through your windows can save you money on unnecessary health bills.

Reducing energy

1. Restore old windows to improve efficiency – if your windows are in good condition, it may be worthwhile to take the necessary steps to make it energy efficient. This will greatly save you money on energy costs. There are a few things you could do to improve the efficiency of your windows. These include:

Check windows for air leaks
Caulk and weather-strip your windows. Watch do-it-yourself videos and manuals.
Add window treatments
Add storm windows
Add exterior shading

With any improvements that you plan on making, insure that they are installed adequately and ensure that you check for air leaks after you have made the improvement.
2. Replace old windows – if you have decided to replace your windows you will need to make many decisions about the type of windows that you will be purchasing and the type of replacement that you will make. You may be able to replace the windows in their existing frames however, you must first check with a professional if this is acceptable. You need to decide which features you would like in your windows:

Frame types
Glazing type
Gas fill and spacers
Operation types

Together with choosing the window type that you like, you must also consider warranties, energy use and proper installation. When buying windows, it is a good idea to look for the energy star label, then review its ratings on the energy performance label. These ratings provide a trustworthy way to determine the energy properties of a window.

Window selection tips

1. Look for the energy star label and NFRC labels
2. In colder climates, select a gas filled window with low e-coatings which will reduce heat loss. In warmer weather conditions, look for windows with coatings to reduce heat gain.
3. Choose a low U-factor for better thermal resistance in harsh weather conditions.


Even if it is the most energy efficient window, it must still be installed properly to really ensure energy efficiency. You should get your windows installed by professionals, according to the manufacturer’s directions. If this is not done properly, then your warranty might not be valid.

Choosing windows for your home, go far beyond aesthetics and ambience, it is also about ultimately saving money on energy bills.

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