Energy rated windows efficiency is calculated using a combination of the insulation of the frame and the glass or ‘sealed unit’. Other factors such as the size of the window and any air leakage are also taken into consideration. To regulate and make this easier to understand the government have introduced the Window Energy Ratings scheme. The British Fenestration Rating Council (BFRC), in conjunction with the UK glazing industry and European partners designed a window rating system to meet the need for simple and accurate information. The BFRC provides third party certification for the total thermal performance of windows using a ‘fair, accurate and credible’ assessment scheme.
A Rated Windows For Greater Energy Efficiency
Double glazed windows have energy efficiency ratings from A to G similar to white goods. The allocation of the A rated window label is controlled by the BFRC (British Fenestration Rating Council) who put a window through a thorough testing process to display a rating from A – G with an A rating being the best. All our energy rated windows use the latest magnetron-coated Low ‘E’ glass, which reflects heat back into the room. The outer pane comprises of a specially-formulated, ultra-clear ‘Low Iron Glass’ that allows both more light and more of the sun’s heat to pass through the window and into your home, maximising the amount of free heating you get from the sun.
Choosing higher energy rated windows will mean lower fuel bills as greater insulation allows less heat to escape and more to remain inside your home, keeping it warm and cosy whilst saving you the greatest amount of money. At AllGlass we recommend the highest rating to gain the most impact. A rated windows draw through light and heat from the sun whilst also providing excellent insulation to ensure heat loss through the windows is kept to a minimum. Not only is your home warmer but more environmentally friendly. Lower bills and a clear conscience!
What is the difference between A rated windows and C rated windows?
A Rated Windows – The A rated window has the highest possible energy efficiency score with the premium glazing option and foam filling where necessary to the outer frame. At AllGlass we can make this is an affordable option. These windows will substantially reduce heating bills as they exceed all recommended energy efficiency levels.
C Rated Windows – All window companies must now sell at least a C rated window or a window with a 1.6 U Value. This is a recommended threshold energy saving rating as quoted by the Energy Saving Trust. Those achieving a C or above demonstrate they have been designed, manufactured and tested to a good level of overall thermal efficiency. Using this scale of measurement, our energy rated windows are more than twice as effective at retaining heat as standard clear double glazing, and 30% better than Pilkington K. To get the most for your money and make the most impact in terms of warmth, money saving and CO2 emissions, we strongly advise customers to choose an A rated window.
