- February 15, 2026|
- Windows|
- sandymount_admin
Winter may be coming to a close, but the benefits of thermally efficient windows extend all year round. If your home felt colder than it should have over the winter months (especially given how torrid the weather has been), with heating systems working overtime and energy bills climbing, now is the perfect time to think about replacing your old windows.
Installing modern uPVC windows now not only keeps your home warm through the tail end of winter but ensures you enjoy a cooler summer while saving money and energy next winter.
According to the Energy Saving Trust, upgrading to A++ rated double glazed windows from single glazing could save an average household up to £140 a year on energy costs. That’s money back in your pocket, plus a reduction in your home’s carbon footprint.
How older windows can increase energy costs during winter
Older or inefficient windows are a common culprit behind higher energy consumption in UK households. As the cold weather hits, heat loss through older frames or single glazing can place extra demand on your heating systems.
Some ways older windows can increase energy costs include:
- Single glazing or worn double glazing allows heat to escape quickly.
- Poorly fitting frames and gaps let cold air in, increasing heating requirements.
- Deteriorating seals around panes reduce airtightness, allowing warm air to escape.
- Cold bridging through old timber frames transfers heat to the outside.
- Condensation and moisture build-up reduces comfort and can impact insulation performance.
How modern uPVC provides lasting value by improving insulation
uPVC is a highly energy-efficient window frame material, designed to keep your home warm in the winter and cooler in the summer. Its excellent insulation properties help reduce heat loss and lower heating costs, making it the most popular choice for UK homes. Beyond houses, uPVC is also widely used in offices, schools, and other properties where comfort, low maintenance, and energy performance are essential.
Modern uPVC windows from Sandymount combine multi-chambered frames and high-quality glazing to improve insulation, providing consistent indoor temperatures, reducing heat loss, and cutting energy bills.
Understanding U-values
U-values measure how much heat is lost through a window. The lower the U-value, the better the insulation, helping your home stay warmer in winter and cooler in summer.
At Sandymount, our uPVC window range offers:
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- Double glazed units: U-values of around 1.0-1.2 W/m²K, providing excellent thermal insulation.
- High-spec triple glazed units: U-values as low as 0.8 W/m²K, ideal for reducing heating costs and lowering your carbon footprint.
By choosing windows with the right U-values, you are not only saving money in the long run but improving comfort throughout your living spaces.
Draught reduction
Storms are becoming more frequent during UK winters, making draught-proofing essential. Modern uPVC windows feature airtight sealing and multi-point locking systems, which stop cold air from entering and warm air from escaping. Reduced draughts mean your heating systems work less, your energy bills are lower, and your home maintains a steady indoor temperature even during harsh weather.
How much can new uPVC windows save me in energy bills each year?
According to the Energy Saving Trust, replacing single-glazed windows with modern A++ rated double glazing can save an average UK household up to £140 per year on heating costs.
The exact figure depends on your property type, the number of windows replaced, and the glazing specification. For some homes, switching to triple glazed uPVC windows could increase savings even further, particularly in older properties with high heat loss.
What are the other benefits of uPVC windows?
While energy performance is a major consideration, uPVC windows offer a wealth of additional benefits.
Benefits of uPVC materials
| Benefit | Explanation |
|---|---|
| Low maintenance | Requires only an occasional clean to look like new. |
| Durability | Resistant to rot, corrosion, and warping, issues that hampered old timber. |
| Customisation | Wide range of colours, woodgrain finishes, and decorative glazing options. |
| Affordable | Mass-produced yet high quality, providing excellent value for money. |
| Long-lasting | Designed to perform efficiently for decades. |
| Noise reduction | Multi-chambered frames and glazing reduce noise pollution from outside. |
These standout features make modern uPVC windows the ideal choice for homeowners looking for peace of mind and long-term cost savings.
uPVC windows from Sandymount Windows & Doors
At Sandymount, we offer a wide selection of quality uPVC windows designed for energy efficiency, security, and aesthetic appeal:
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- Casement windows: Famed for simplicity, open inwards or outwards using a handle.
- Flush sash windows: Operate in the same manner as casement windows, but the glass sits completely level with the frame material.
- Sliding sash windows: Classic design, the panes of glass vertically as independent units, great for a period property and significant ventilation.
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All our uPVC windows come with multi-chambered frames, excellent thermal insulation, and a range of colours to suit your home.
FAQs
Who are Sandymount Windows & Doors?
We are a family-run, independent company serving North Wiltshire, Oxfordshire, Gloucestershire, Bristol and beyond. With years of experience and FENSA, BFRC, and CHAS accreditations, we provide bespoke home improvements including uPVC and aluminium windows, composite doors, French doors, bifold doors and more.
Can uPVC windows reduce my heating costs?
Yes. Modern uPVC windows provide LEADING insulation, airtight sealing, and low U-values, keeping warm air inside and lowering energy bills, especially during the winter months.
Are uPVC windows low maintenance?
Absolutely. Unlike timber windows, uPVC requires minimal upkeep. A simple wipe down is enough to maintain their appearance for years, saving both time and money.
If you’re ready to cut your winter uPVC window energy costs and enjoy long-term energy savings, get in touch with our team today. Visit our Cirencester showroom, https://www.sandymountwd.co.uk/contact/ for expert advice and a no-obligation quote.
