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Energy efficient windows reduce heat loss through the glazing and frame, which translates to lower heating bills, warmer rooms in winter, and a more comfortable home year-round. For UK homeowners replacing older single-glazed or 1990s double-glazed windows, the energy savings typically show up on the heating bill from the first winter after installation.
We supply and fit A-rated and A+-rated energy efficient windows across an 80 km radius of our Rushden showroom. Available across uPVC, aluminium and timber construction with U-values from 0.8 W/m²K on triple glazed configurations.
Energy efficient windows combine several engineering choices that work together to minimise heat loss:
Each element contributes to the overall U-value of the window assembly. The lower the U-value, the better the thermal performance.
The BFRC labelling scheme rates window energy performance from A++ (best) to E (worst), similar to fridge energy ratings:
UK Building Regulations Part L currently require new replacement windows to achieve at least band C energy performance. Our standard windows comfortably exceed this minimum.
The improvement from older windows to modern energy efficient windows is significant:
Replacing single glazing with modern A-rated double glazing typically cuts window-related heat loss by around 70%. Upgrading from 1990s double glazing to modern A-rated equivalents typically cuts window-related heat loss by 40 to 50%.
The practical benefits of upgrading to energy efficient windows:
Properties on exposed elevations and older buildings with existing thermal problems benefit most from the upgrade.
The glazing spec drives most of the energy performance:
The standard energy efficient spec. Two glass panes with Low E coating on one inner surface, argon gas fill, warm edge spacer bars. Achieves U-values from 1.2 W/m²K. Best balance of cost and performance for most UK homes.
The premium energy efficient spec. Three glass panes with Low E coatings, two argon-filled gaps, warm edge spacer bars. Achieves U-values from 0.8 W/m²K. Best for exposed elevations, properties near busy roads, and new builds aiming for the highest energy ratings.
Low E (low emissivity) glass has a microscopic metallic coating on one glass surface inside the sealed unit. The coating:
Energy efficient windows are designed to reduce heat loss through the glass, frame and seals compared with older or poorly performing windows. They often use features such as Low-E glass, argon gas filling, warm edge spacer bars, insulated frame profiles and high-quality weather seals to help keep the home warmer, reduce draughts and improve comfort.
The savings from energy efficient windows depend on your current windows, property size, heating system, insulation levels and energy usage. Replacing single glazing or old draughty double glazing with modern energy efficient windows can help reduce heat loss and may lower heating bills, but the exact saving varies from home to home.
A-rated and A+-rated windows are energy performance ratings used to show how well a window performs. A+-rated windows generally offer stronger thermal performance than A-rated windows, but the best choice depends on the full specification, including the glass, frame, spacer bars, seals and installation quality.
Yes. Low-E glass is a worthwhile feature for energy efficient windows because it helps reflect heat back into the room while still allowing natural light through. It can improve the thermal performance of double glazed and triple glazed windows without significantly changing the appearance of the glass.
Energy efficient windows can support a more eco-friendly home by reducing heat loss and helping to lower the amount of energy needed for heating. The overall environmental benefit depends on the existing windows being replaced, the new window specification, the heating system and the long-term performance of the installation.
Yes. Energy efficient windows can improve home comfort by helping rooms stay warmer, reducing draughts and limiting cold spots near the glass. Better insulated glazing can also help reduce condensation on the inside of the window, especially when combined with good ventilation and a suitable indoor humidity level.
Yes. Energy efficient window specifications are available across many popular styles, including casement windows, sash windows, bay windows, bow windows, tilt and turn windows and flush casement windows. The right combination of glazing, frame material and installation detail can help improve thermal performance while keeping the look you want for your home.
Homeefe supplies and installs energy efficient windows from our Rushden showroom for homeowners across Northamptonshire and nearby areas. Our installation area covers approximately 80 km, including Wellingborough, Northampton, Bedford, Kettering, Cambridge, Peterborough, Corby, Milton Keynes, Rugby, Hemel Hempstead and surrounding towns.
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Each frame material handles thermal performance slightly differently:
Energy efficient windows pay back the upfront cost through reduced heating bills over the years they’re in service.
Typical UK heating bill savings when replacing older windows:
The exact savings depend on the property size, the existing window spec, the heating system efficiency and the local climate exposure.
We install energy efficient windows across an 80 km radius of our Rushden showroom, covering:
Installation is FENSA-registered with the certification paperwork supplied at handover. The FENSA certificate confirms compliance with UK Building Regulations Part L energy performance requirements, and stays with the property for future house sales.
The visible appearance of an A-rated window doesn’t tell you anything about its energy performance, which is why the BFRC ratings exist. Our Rushden showroom has full-size samples with the energy rating labels visible, so you can see exactly what spec you’re considering.
Free home survey and itemised quote covering the energy performance choice across the 80 km installation area.
Book your free quotation appointment with one of our local expert consultants who will:
Take advantage of our free consultation to understand how we can assist you.
Please fill in the following submission form to schedule your appointment. Upon receiving your form, our team will reach out to you to confirm the details of the appointment.
Thank you for considering our services.
We look forward to hearing from you!
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Homeefe Limited is a private limited company registered in England and Wales, company number: 12754601. Registered office is located at: 17 The Precinct, High Street South, Rushden, Northamptonshire, England, NN10 0QU
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