How HeatLock™ Glass Keeps Your Home Cool in Summer

June 08, 2021

In the summer, heat transfer (the movement of heat from hot areas to cool areas) can have a huge effect on the temperature of your home. This can occur both when the sun shines directly on your windows and as heat radiates off the hard surfaces outside your house, like the driveway and sidewalk. To combat heat transfer, window manufacturers have developed specialized coatings known as Low-E (Low-Emissivity) coatings.

The Innovation of HeatLock™ Glass

Renewal by Andersen offers a superior insulated glass option known as HeatLock™. This glass has an additional Low-E coating applied to the interior surface of the insulating glass unit. In the winter, HeatLock works by reflecting radiant heat from the room back into it before it can escape through the glass. In the summer, HeatLock reflects outside heat and light from the sun, keeping your home cooler.

Untreated glass, on the other hand, lets in heat energy, which makes it difficult to control indoor temperatures and lower energy costs. While the coating does slightly change the appearance of windows and doors (which is why we recommend not mixing units with and without HeatLock coating), the coating is so thin that you can see through the glass clearly.

Is HeatLock™ Glass Available on All Renewal by Andersen® Windows?

The HeatLock coating cannot be field-applied to existing windows or patio doors or to textured/patterned glass. However, it is available on a wide variety of Andersen windows and patio doors. And you can still enhance your windows with our grille options, as they’re not affected by the presence of HeatLock coating. Your design consultant can help you determine the best options for adding HeatLock glass to your home.

Choose HeatLock™ Glass for Superior Energy Efficiency

At Renewal by Andersen of Northeast PA, we’re committed to helping keep your home comfortable and energy-efficient year-round. To learn more about the various features of HeatLock insulating glass, give us a call today at [company_phone] or submit our online contact form.

Hear From Our Customers

From George, the salesman giving me a balance of wants and needs to Rosko and his team members doing a fantastic job on the window replacement and install. To the post inspection process and thank you package with additional information for cleaning and maintenance. All was great!

Brenda C.

I cannot say any more then I have, everyone that came from Renewal by Anderson has been one of the best experiences I’ve had dealing with a company. A big thank you.

Mary M.

The entire team was excellent, professional, respectful, thoughtful, and was always attentive of our needs. They always asked questions before they started to make sure we were on the same page. We already noticed savings on our electricity. We are so happy we chose Renewal by Andersen.

Helen R.