Reduce your carbon footprint and heating bills with our energy-efficient windows that are available in A++, A+ and A ratings. We’re always at the forefront of technology and recent advances mean our energy-saving windows are more effective than ever. Each window is tested and rated, so you know exactly how effective it is at keeping out the cold, retaining heat and saving you money.

Energy efficiency and reducing your carbon footprint is important to many Poplar customers. To help you compare the effectiveness of each of our energy efficient windows, we use the energy ratings system developed by the British Fenestration Rating Council (BFRC), which is the UK’s nationally recognised scheme for measuring window energy efficiency. The BFRC scheme is used in Building Regulations to show compliance for window replacements; to comply, every window must achieve a C rating or above.

Each window is assessed to measure how well it prevents heat loss, keeps draughts out and how well it absorbs natural free energy from the sun. This combination of factors gives an overall energy rating, ranging from A+ to G, with A+ being the highest rating.

Our uPVC windows achieve an A rating as standard – meaning that they gain more of the suns free energy than they lose through thermal transmittance. Ratings of A+ and A++ are also possible on our uPVC windows. Our A+ double glazed option makes the most of solar energy. While our triple glazed options, available up to an A++, offer the best in reducing heat loss. By installing Poplar’s windows, you’ll be confident your home will be as warm as possible, saving you money at the same time.

All our uPVC double glazing windows achieve an A rating as standard. The higher the rating, the more energy your windows save, which not only makes your home warmer, but helps to keep your heating bills lower. There’s environmental benefits, too. By consuming less energy to heat your home, you’ll also be reducing your CO2 emissions.

Switching from single glazing to our A rated energy saving double glazed windows will save money and significantly reduce heat loss. Even replacing older double glazed windows to our modern A rated double glazed windows will make a difference. For all round energy performance as well as other benefits, such as better soundproofing and security, you can choose triple glazed windows, which also achieve up to an A++ rating.

Our A rated windows are available in a number of styles and for even greater energy efficiency, you can upgrade to A+ glass in some styles or opt for triple glazing, which is particularly beneficial for hard to heat rooms.

Key performance factors for energy rating

Energy ratings are calculated by measuring three performance factors:

  1. Thermal transmittance, (U value) – which measures how well your window retains heat. The lower the amount of heat lost and U value, the warmer your home will be.
  2. Solar, (G factor) – this evaluates how well your window harvests the sun’s natural heat. Expressed as a number between 0 – 1, the higher the number, the better your window is at capturing heat.
  3. Air leakage, (L factor) – measures how airtight your windows are. The lower the L factor, the less draughty your window will be.

The combination of these three factors provides an overall energy rating for each window.