If you plan to purchase a storm door , consider features that improve the energy efficiency. Storm door frames are usually made of aluminum, steel, fiberglass, or wood (painted or not). National Fenestration Rating Council (NFRC) certified means that a product helps homeowners save money on energy costs and protects the environment through energy efficiency. The R-Value, which is a measure of thermal resistance. The higher the R-Value of the energy efficient entry door, the better the insulation.
![Energy efficient door Energy efficient door](https://www.gcbl.org/files/slideshows/full/blow-in-insulation.jpg)
When temperatures spike, drafty windows and doors can quickly turn into rising utility bills. There are different certification requirements for different climate zones. Product availability varies upon region.
Solar Heat Gain Co efficient (SHGC) SGHC: Solar heat gain coefficient (SHGC) measures a window’s ability to block the sun’s heat. Exclusive energy -saving system. Protection from extreme temperatures. The lower the U-factor, the more energy - efficient the window, door , or skylight. Independent testing shows that they perform 10X better than NFRC standards for doors and windows on air leakage tests.
![Energy efficient door Energy efficient door](https://www.kingfisherwindows.co.uk/wp-content/uploads/2017/06/composite-doors-5.jpg)
Embarq is the most energy - efficient entry door system in the U. Our pet doors are the most energy efficient you can buy. This innovative fiberglass entry door provides a U-factor of 0.