How Efficient Are Your Windows? Three Ways To Check

Katelyn Lewis • January 5, 2023

Windows are one of the most-common places for your home to lose its heat, and non-efficient windows can cause you to lose hundreds to thousands of dollars annually on your heating and cooling bills.

In fact, the U.S. Department of Energy estimates heat gain and loss through windows are responsible for 25% to 30% of residential heating and cooling energy use.


Knowing whether your windows are performing optimally, therefore, is critical for your home’s comfortability and energy efficiency.


Here are three ways to check your windows’ efficiency:


1. Look for gaps between the window frames and your home’s siding. Any cracks or dryness in your window’s glazing – the hard, putty-like substance holding the individual glass panes in place – also offers a chance for moisture or heat to transfer.


2. Use (or hire someone to use) Infrared laser thermometers and U-Value kits for a more high-tech testing option. If a window is leaking, it should register a colder temperature than the rest of the room.


3. Tape a small piece of plastic wrap on a pen and then hold it next to your windows. If the plastic wrap moves, your windows are drafty and non-efficient.


Don’t toss money straight out the window, so to speak. Give our Retex team a call at 804-258-6300 to tell us more about your window needs.

Our Window Services
RETEX Metal roof replacement in Providence Forge, VA
By Katelyn Lewis April 16, 2025
There are a handful of factors that influence how long it will take to replace your review. Let's discuss.
RETEX roof replacement in Fredericksburg, VA 22407, featuring Owens Corning
By Katelyn Lewis April 11, 2025
This Fredericksburg homeowner reached out to RETEX in October 2023 to assess whether his roof needed repairs or a full replacement.
A RETEX window installer carries a new low-E fiberglass window to second floor, North Chesterfield.
By Katelyn Lewis April 9, 2025
Let's discuss the pros of replacing your old windows with energy-efficient new ones.
RETEX Siding replacement in Midlothian, VA 23112.
By Katelyn Lewis April 2, 2025
Let's review five factors that come into play with the cost behind replacing your siding.
RETEX Roof Replacement in North Chesterfield, VA, August 2024. OC Duration Williamsburg Grey shingle
By Katelyn Lewis March 28, 2025
This North Chesterfield homeowner reached out to RETEX in July 2024 for a roof replacement quote.
RETEX's Josh Lewis examines a window replacement project in North Chesterfield, VA.
By Katelyn Lewis March 19, 2025
If you need to replace your home’s windows, you may be wondering how long the window replacement process takes.
Retex Roof Replacement in Tuckahoe, Va – Owens Corning Duration
By Katelyn Lewis March 14, 2025
This Richmond homeowner chose RETEX to replace her roof with Owens Corning Duration “Onyx Black” shingles in December 2023. Replace your roof with RETEX so you can enjoy St. Paddy’s Day without worrying about the water spots on your ceiling. Call us today at 804-442-3314.
By Katelyn Lewis March 12, 2025
When you consider re-siding your home, you should keep an eye out for siding materials that are durable, moisture-resistant, and energy efficient.
By Katelyn Lewis March 6, 2025
This North Chesterfield homeowner reached out to RETEX in October 2021 for an estimate for a new roof. He then returned to us in September 2024, meeting again with RETEX’s Mark Erickson to discuss replacing his home’s siding, windows, soffit, gutters, and four doors.
RETEX Roofing & Exteriors sponsored Hening Elementary teachers and staff in March 2025.
By Katelyn Lewis March 5, 2025
We love giving back to our community. We especially love it when it leads to new friends!
More Posts