Frequently Asked Questions

It’s true, if you select high-quality, energy-efficient windows. Replacement windows with insulated frames and energy-efficient glass packages can prevent the transfer of heat and cold into and out of your home all year long. With vinyl or fiberglass windows, maintenance is virtually eliminated – no need to scrape or paint. These energy and maintenance savings may allow you to recoup your window investment within a few years.

Any replacement window you purchase should come with a label from the National Fenestration Rating Council (NFRC). The NFRC conducts testing and has established industry standards for rating the energy performance of replacement windows. Window manufacturers participating in the program are required to label every window according to its specific thermal performance level. Customers are then ensured that the products they select meet the requirements for their application.

Vinyl or fiberglass window frames with multi-chambered construction and fusion-welded corners are the most energy-efficient available. Insulated frames are especially effective when combined with a Low-E glass package.

Double-pane and triple-pane windows create layers of insulation. In general, the more airspace there is between panes, the better the window’s insulative value. Inert gas fills, such as argon or krypton, slow the transfer of heat or cold into your home. Controlling the amount of convection between the panes of glass means you’ll need less energy to heat or cool your home.

Among the best options you can have on your windows is a Low-E coating. “Low-E” is short for low emissivity. Low-E glass has a very thin coat of metal on the glass surface to reflect heat, keeping exterior heat out in the summer and interior heat inside in the winter. Low-E glass can also prevent furniture and carpet fading by reducing the amount of ultraviolet radiation that enters your home.