Window Energy Ratings Uk

These days this information will be displayed on the unit in the form of an energy rating label wer.

Window energy ratings uk.

To choose the most energy efficient window look for the bfrc rating. The energy efficiency of your windows is assessed by the window energy rating wer system with the scale going from a for the best performance to g for the worst performance. They take into consideration the thermal efficiency solar gain and the air leakage of the window. The entire window the frame and the glass is assessed to allow for heat loss draughts and solar gain giving a rating that indicates the overall impact of fitting that window in your home.

The widest known of these ratings are provided by british fenestration rating council bfrc british standards institute bsi and certass. It is important to know that your replacement windows or doors are energy efficient. A window product s rating is listed at the top of the label using a letter and associated colour band. The bfrc is run by the glass glazing federation ggf the trade body representing many window companies.

A simple guide to uk double glazed windows and doors energy ratings. You will often find that older windows tend to be at the bottom of the scale as their performance decreases and they become less efficient over a long period of time. Window energy ratings in 2005 the glass and glazing federation took over the british fenestration rating council bfrc and significantly increased its brand awareness and the widespread acceptance of wers through the large numbers of licences licence holders. The british fenestration rating council bfrc runs the scheme.

What are window energy ratings. They make this wer calculation based on the following three properties. Window energy ratings provide an outline or overall value for how energy efficient a window is. Replacement windows have to meet building regulation requirements for energy efficiency measured either through a u value calculation or a window energy rating wer with a rating scale of a g with a being the highest.

The window energy rating is calculated by an organisation call the british fenestration rating council bfrc the bfrc classify the energy efficiency of different windows on a scale ranging from a to g with a being the highest rating and g being the lowest.