Note that energy star considers glass doors to be a type of window.
Composite door energy ratings.
The advice we give is always the same in so much as the british fenestration rating council bfrc are the premier authority on testing glazing and ensure the highest.
Learn more about the nfrc label.
You can t go too wrong when it comes to a rated products it s as simple as it seems.
Door set energy ratings dser s provide a simple yet effective way of assessing the energy efficiency of residential doors including composite doors similar to choosing a washing machine.
The rating is a measurement of how thermally efficient a product is based on a scale that runs between a and g with a being the most thermally efficient and g being the least.
Rockdoor is the only composite door manufacturer in the industry to have an entire series of front and back doors which are available with an a rating.
Since the introduction of the door energy rating scheme der in 2011 some of the most frequently asked questions revolve around the issue of the benefits of these ratings.
Lower u values mean better thermal efficiency keeping your home warmer and helping to reduce your energy bills as a result.
The lower the u factor the more energy efficient the window door or skylight.
Our composite doors have u values that range from as low as 1 1 1 4 w m2k.
The national fenestration rating council nfrc label helps you compare energy performance ratings of doors.
Nfrc u factor ratings however represent the entire window performance including frame and spacer material.
It s usually expressed in units of btu hr ft2 of.
An a rated window or composite door is better than a c rated window or door.