What is a good NFRC rating?

The ideal score here is between 0.1 and 0.3. The only outlier is the visible transmittance, in which you want a higher number because it means more natural light is coming into your home.

What is NFRC rated window?

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 NFRC label provides a reliable way to determine a window’s energy properties and to compare products.

How do you read NFRC ratings?

Look for: Low numbers in cooling conditions; high numbers in heating conditions. U-Factor measures how well a product can keep heat from escaping from the inside of a room. The lower the number, the better a product is at keeping heat in. NFRC provides free fact sheets to help retailers sell more products.

What does the NFRC label tell you?

The NFRC label helps you compare between energy-efficient windows, doors, and skylights by providing you with energy performance ratings in multiple categories. NFRC also has a condensation rating that is optional for manufacturers to include, so you may or may not see it on the label.

What is a good CR rating for windows?

CR can range from 1 to 100. The higher the number, the better resistance the window offers. Typically, you want a window with a CR rating that ranges between 30 and 80.

What is a good R factor for windows?

A good R-value range: Greater than R-5. A good U-value range: 0.20 – 1.20 according to energy.gov.

What does NFRC stand for?

National Fenestration Rating Council
The National Fenestration Rating Council (NFRC) is a United States 501(c)3 non-profit organization which sponsors an energy efficiency certification and labeling program for windows, doors, and skylights.

Is a higher or lower U-factor better?

The lower the U-Factor, the better the window insulates. The SHGC measures how much of the sun’s heat comes through the window. It can range in value from 0 to 1. The lower the SHGC, the less solar heat the window lets in.

What do numbers on windows mean?

The higher the number, the more light comes in. Typical ratings are 0.20 to 0.80. Condensation Resistance – The Condensation Resistance level is how much condensation the window allows. A larger number means less condensation build-up will occur. Ratings vary from 0 to 100.

What is clear low E glass?

Low E glass is essentially standard clear glass with a microscopic, transparent coating on its surface that is better at reflecting heat than the glass itself, creating a composition that has a lower emissivity than standard glass.

What is a good condensation resistance rating?

General Window Recommendations An A CRF rating of 70 will prevent most condensation down to -15°, and a CRF of 72 will do the same down to -20°F.

What does CR mean on glass?

Condensation Resistance
CR, or Condensation Resistance, measures how well a product will resist the formation of condensation and is expressed as a number between 1 and 100. The higher the number, the better the window will resist forming condensation.