BFRC Rating The BFRC are one of the most reliable window and doorway energy overall performance assessors in britain. A++ Power rating A+ Electricity rating A energy score B Electricity rating BFRC Score The BFRC are one of the most dependable window and door Power effectiveness assessors in the UK. https://www.apptape.co.uk/blog/dec-advantages-of-window-tinting-films/