When buying energy-saving windows, focus on each part that makes the whole. Other than reading the ENERGY STAR® and National Fenestration Rating Council (NFRC) labels, your fundamental understanding of their anatomy is key to making a sound purchase.

Energy-Efficient Windows

At Renewal by Andersen® of Western New York, our windows in Rochester, NY, are some of the most efficient products you could find. The biggest reason for that is the healthy union of our glass, glazing, and gas technologies.

Here’s why these three things matter:


Glass alone provides you defense against the sun’s undesirable rays: the infrared and the ultraviolet. The former causes heat, while the latter is responsible for solar damage. In the past, the best way to reflect them is through glass tinting; however, doing so darkens your outdoor views.

Fortunately, modern science has given birth to Low-E coatings. When applied to the glass, these nearly invisible metal oxide layers specifically block infrared and ultraviolet rays yet allow visible light through.

As a result, Low-E–coated windows keeps your home from overheating and protects your valuables against fading without affecting their glass clarity.


Referring to the window’s glass component, double-glazing is today’s standard in window replacement in Rochester, NY. Compared with a single pane, two sheets of glass provide a tough barrier against heat and noise.

In addition, double-glazed windows create a space in between the glass panes to hold the insulating gas. This design is imperative to reduce heat transfer significantly. Heat transfer is the natural movement of your indoor warm air to the colder outdoor environment.

Insulated windows do a better job in trapping your indoor heat, preventing energy leaks and trimming your utility costs.


The primary purpose of an insulating gas is to reduce heat transfer at a profound level. It lessens energy conduction, therefore keeping your indoor heat inside.

Other window manufacturers use different gases, but your trusted window company in Orchard Park, NY, chose to optimize argon. Our own argon gas blend delivers exceptional insulating value, increasing the overall efficiency of our products. Combined with our standard High-Performance™ Low-E4® SmartSun™ glass, our windows are 70% and 45% more efficient in summer and winter, respectively, compared with ordinary products.

Let Renewal by Andersen of Western New York take your home’s energy performance to greater heights. Call us today at (585) 481-8006 to schedule your FREE in-home consultation at your convenience.