Window Energy Ratings Scale

The window s insulating value is indicated by the r value which is the inverse of the u value.

Window energy ratings scale.

The nfrc label provides a reliable way to determine a window s energy properties and to compare products. Solar heat gain and u factor. Independently tested and certified energy performance. When manufacturing installing or choosing windows and doors you need more than.

The lower the number the better an insulator the window or door is. 45 of that cost is for heating and cooling. Find out how bfrc ratings can help you. U factor ratings for windows generally fall between 0 20 and 1 20.

The bfrc energy window label utilises a traffic light a to e scale on the basis of total energy efficiency where an a rated window is the most energy efficient. Choosing high performance windows doors and skylights can save you money and keep your home comfortable. The circled value shows you the rating a door has received. Understanding a bit about the window energy label its ratings and how they indicate a windows energy efficiency can help you make better buying decisions.

Each year the average american household spends 1 500 2 500 on energy bills. The lower the u value the greater a window s resistance to heat flow and the better its insulating value. 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. This radiation can cause your home to heat regardless of outside temperature which.

The scheme is similar to those seen on household appliances white goods and light bulbs. The energy performance of all energy star qualified windows doors and skylights must be independently tested certified and verified according to test procedures established by the national fenestration rating council nfrc. Each rating is split into two values. The other three are somewhat less important to energy performance according to energy star but can help you judge how well a window or door will perform in a particular application for example whether it ll let in enough light.

Window energy ratings the window energy rating wer tells you how energy efficient your windows are. The rating system is based on a scale of e to a with a windows being the most energy efficient. A window product s rating is listed at the top of the label using a letter and associated colour band. Our instantly recognisable rainbow ratings can now help you prove acoustic performance too with bfrc noise reduction ratings.

Nfrc is a third party non profit organization that sponsors certified rating and labeling to help consumers.