Window Energy Ratings Explained

The nfrc label provides a reliable way to determine a window s energy properties and to compare products.

Window energy ratings explained.

Each rating is split into two values. The following window ratings can be used to determine the efficiency of various windows and help you sort through the plethora of options available. The window s insulating value is indicated by the r value which is the inverse of the u value. The higher up the window energy rating wer label you go the more energy efficient the window will be.

U value sometimes called window u factor measures the rate of heat transfer it tells you how much heat is lost or gained through. This radiation can cause your home to heat regardless of outside temperature which. What makes it energy star. Up to a huge 25 of the heat within most homes will escape straight out of the window which could end up costing you a small fortune in heating bills.

No style of window is more energy efficient than the other it s the manufacturing process and how well the window overall from the frame to the glass performs this is what s important for energy efficiency and window energy rating. The white national fenestration rating council label. Solar heat gain and u factor. The circled value shows you the rating a door has received.

Nonprofit nfrc is the industry recognized certifying body for windows and doors. Find out how they can help you select the right windows for your home. Though energy star does not require any. Energy star qualified windows doors and skylights.

The rating system is based on a scale of e to a with a windows being the most energy efficient. The national fenestration rating council nfrc operates a voluntary program that tests certifies and labels windows doors and skylights based on their energy performance ratings. The scheme is similar to those seen on household appliances white goods and light bulbs. Government in addition to the nfrc ratings.

Solar heat gain coefficient measures how well a product can resist unwanted direct or indirect solar radiation. The windows you select for your home can help make a difference to the warmth and security of your living areas. U factor ratings for windows generally fall between 0 20 and 1 20. The energy star label which means the appliance has met strict energy efficiency criteria set by the u s.

Window energy ratings the window energy rating wer tells you how energy efficient your windows are. When lower ratings mean better windows. Window energy ratings explained it s important to consider how efficient your windows are if they are working correctly to keep you and your home warm. Window energy ratings window energy ratings let you compare the energy efficiency of different window products.