What is an Energy Rating?
The BFRC Rating equation is based on 3 factors:
- Thermal Transmittance (U-value)
- Solar Factor (g-value)
- Air Leakage (L-value)
A BFRC Rating simply and effectively assesses the energy performance of the whole window. This rating covers the frame material, the frame design, the glass type and all the other components that make up the window.
For the first time it is possible to compare the energy performances of different complete windows simply and quickly.
Want to know more? Have a look at the BFRC FAQs here
Category 'B' Energy Rating
Ecotilt™ highest Energy Rating. This Energy Rating was acheived by a timber sash window with the Ecotilt™ advanced PVCu insulation and weatherstripping.
Category 'C' Energy Rating
This Energy Rating was acheived by a timber sash window with the Ecotilt™ advanced weatherstripping but without the same grade of PVCu insulation as the 'B' Rated window.
US Energy Ratings
Ecotilt™ has recently undergone Simulations in the USA prior to its launch into the market.
A U Factor of 0.19 has been achieved