Energy Efficient
Windows

Energy efficient windows can reduce heating bills by approximately £200 to £400 annually for a typical three-bedroom home in Bishop's Stortford, helping cut energy costs significantly.

U-values measure how well a window insulates: the lower the U-value, the better the insulation. Modern double glazing usually has U-values between 1.4 and 1.6 W/m²K, meeting UK building regulations and providing excellent energy savings.

Part L is a UK building regulation requiring windows to achieve a U-value of 1.6 W/m²K or better to improve energy efficiency, reduce carbon emissions, and ensure buildings meet modern insulation standards.

Low-emissivity (Low-E) coatings are thin metallic layers on glass that reflect heat back inside the home, reducing heat loss by up to 50%, blocking harmful UV rays, and maintaining natural light.

Yes. Homeowners in Bishop's Stortford may access several schemes such as the ECO4 Scheme, the Home Upgrade Grant (HUG2, ending March 2025), and local authority grants from East Hertfordshire Council to help reduce installation costs based on income and property criteria.

Grants typically target low-income households, homes with poor energy ratings, and those off the gas grid. Eligibility depends on income, energy performance certificates (EPC), and location. Applications usually require a technical assessment from the local council.

Yes. There is a 0% VAT rate on qualifying energy-saving materials and installation work for windows, which can save homeowners up to 20% on total costs. This relief is available until March 2027.

Upgrading to energy-efficient windows can increase property value by an average of £5,000, primarily by improving Energy Performance Certificate (EPC) ratings and appeal to eco-conscious buyers.

Triple glazing offers the lowest U-values (0.8–1.2 W/m²K) and maximum insulation but at a higher cost. Modern double glazing (1.4–1.6 W/m²K) also provides excellent energy efficiency, balancing performance and value.

Start by contacting your local council or an approved installer for an energy assessment to determine eligibility. Applications often require proof of income and property energy ratings, submitted through local authority portals or government schemes.

ECO4 (Energy Company Obligation) is a government-backed programme running until March 2026 that provides funding for energy efficiency improvements, including double glazing, for eligible low-income and fuel-poor households across England, Scotland, and Wales.

Yes. East Hertfordshire Council offers means-tested grants to support energy improvements like window replacement, which can be combined with national schemes for additional funding.

Look for windows with low U-values, Low-E coatings, gas fills like argon, and certified compliance with Part L regulations. Also, consider available grants to offset installation costs and whether triple or double glazing best suits your home's needs.