20149, Ashburn, VIRGINIA
LoE³-366 Glass display with logo stating "Ultimate Performance Glass for All Climates" by Advanced Window Products USA Utah

The best energy saving windows you can buy

3 minute read


Let’s talk about the best energy saving windows, Utah! Cardinal Glass Company’s LoE glass is the ultimate energy-saving glass. In fact, at Advanced Windows Products, its the only glass we use in our Utah replacement windows. Whether it’s 90 degrees or 20 degrees outside, energy efficient LoE-366 glass keeps the outdoor temperature outside your Salt City Lake area home, so you’re comfortable inside.  This glass is so good you can feel it.

How replacement windows with LoE-366 glass save energy and energy dollars

The secret to Cardinal’s LoE-366 glass is an unprecedented three layers of silver on the outside of the window. They accomplish this by using a patented sputter coating process. The result is a glass that lets the light in, while creating a thermal barrier that reflects heat and repels UV rays.

Cardinal’s LoE-366 glass creates up to a 75-degree barrier between the outside temperature and the inside temperature. Helping keep the temperature of the glass within a few degrees of the temperature inside the house. This glass stops more than 65 percent more heat gain than regular vinyl replacement windows. That means you don’t have to spend so much money on energy to cool the hot air that comes from ordinary windows. What’s more: LoE-366 glass windows aren’t tinted like many replacement window products, so you can still enjoy a full, clear view of the outdoors while staying comfortable indoors.

Advanced Window Products USA Helping Utah Homeowners Stay Warm During Winter

Of course, LoE 366 glass can also keep your home warm and energy efficient during the cold Utah winters. During the winter, glass acts as an insulator. The temperature of that glass directly affects how warm (or how cold) your living spaces will feel. When the outside temperature drops to 20 degrees, the glass in double pane windows with LoE-366 stays between 58 and 60 degrees. That compares to single pane glass windows, where the glass temperature plummets to 31 degrees, and ordinary double-pane windows, where the glass temperature drops to 51 degrees. Cold glass means a home that takes more energy to heat.

Cardinal’s LoE-366 glass also helps to reduce fading from the sun’s rays. LoE-366 glass blocks up to 95 percent of the sun’s UV rays. Helping drapes, rugs, upholstery and wall coverings and other household items to stay beautiful and vibrant for years to come. Not having to replace your window treatments and floor coverings so often is another way these windows will save you money.

Energy efficient windows with Advanced Window Products

Advanced Window Products has been helping homeowners beautify the exterior of their homes while saving money with new windows for more than 25 years! We’re proud to have earned our position as Utah’s number one replacement window company. To learn more about how replacement windows with energy-efficient glass can help reduce your energy costs, visit Advanced Window Products for a free quote. Or, call us at 801 505-9622.

Reviews

Linda Wiedrich AvatarLinda Wiedrich
I love my new windows.! The installers were knowledgeable , neat, cleaned up very nicely . Extremely pleasant crew that worked fast and competently with each other. I was shown that all the windows worked perfectly, and how to pull them in for cleaning. I would recommend these windows and employees. - 9/05/2026 
Helen Litle AvatarHelen Litle
Yesterday I had the pleasure of having new windows installed on my back porch and laundry room by Advanced Window Products team headed up by Junior along with Pablo and Jesus. They arrived even a bit earlier than was expected. After doing a quick walk-thru with Junior, all three got right to work despite the awful heat. They worked steadily helping each other as need by and had all four of the new windows in within two hours. After a lunch break to refresh and cool down, they returned to finish the caulking, cleaning, and prettying everything up before departing.Through out Junior kept me in the loop and Pablo and Jesus were polite. All were so polite and hard working.Shouts go out to Katie in the Tolleson office for all her help getting everything scheduled and figuring out payment options and for just going above and beyond. Thank you to all! I know I’m going to enjoy my new windows. - 8/26/2026 
Glen Sellers AvatarGlen Sellers
They did a great job replacing my basement windows. There were gaps because of settlement issues between the old windows and the window sills. They took care of all these issues. They were very professional and left everything very clean. They showed up on time. It all went well and looks great. - 8/24/2026 
Julie Rolfsen AvatarJulie Rolfsen
Advanced window products did a great job, and the showed up on time. Our new windows are wonderful! Give them a chance if you looking for windows. - 8/20/2026 
Julie Bronson AvatarJulie Bronson
Very happy with my new windows, the installers were very professional and felt my house clean and very little damage to the window seal and trim. - 8/19/2026 
derrick byrd Avatarderrick byrd
I stopped in for a rock chip repair yesterday, they scheduled me for the following day. Come to find out if had 2 rock chips. They got the chip fix beautifully and fast with amazing customer service. I will be coming here for all of my glass needs and so should you - 8/18/2026 
Emily Bangerter AvatarEmily Bangerter
We're very impressed with the prompt and professional service we've received. They were on time for appointments and install, and the workers were polite and courteous in our home. The office even called to follow up after install to make sure we were happy. Our only complaint was a few screws and small pieces of debris left in the grass, which took just a couple minutes to clean up. The windows have survived a couple storm days already with no issues. So far so good! - 8/17/2026 
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