Are energy-efficient windows and doors more expensive?

Yes, energy-efficient windows and doors generally cost more upfront compared to standard options, but the extra expense is often offset by long-term savings on energy bills and potential environmental benefits.

Why are energy-efficient windows and doors more expensive?

Energy-efficient windows and doors incorporate advanced materials and technologies designed to reduce heat loss and improve insulation. Features that add to the cost include:

• Double or triple glazing with specialized low-emissivity (Low-E) coatings that reflect heat inward.
• Multi-chambered frames made from materials like uPVC, timber, or aluminium designed to trap heat.
• High-quality seals and weatherstripping to prevent drafts.
• Certification like A++ energy ratings indicating top performance.

These features require better materials and manufacturing processes, contributing to higher initial purchase and installation costs.

Typical costs in the UK (2025)

• Windows: A standard uPVC double-glazed window generally costs between £160 and £1,240 per unit, depending on size and style. Aluminium and timber options are more expensive, ranging roughly from £210 to £1,860 per window.
• Doors: Composite front doors typically cost between £700 and £2,500. uPVC back doors range from £350 to £1,100, while patio and bifold doors can be £800-£5,500 depending on style and material.

For an average UK home, replacing all windows and doors with energy-efficient versions can range from approximately £6,000 to £9,000 in total.

Benefits that justify the cost

• Energy bill savings: Upgrading from single glazing to A++ rated double glazing can save up to £150 annually on heating bills.
• Carbon footprint reduction: Energy-efficient windows and doors can reduce household carbon emissions by around 420kg per year.
• Comfort and noise reduction: Improved insulation reduces draughts and external noise.
• Increased property value: Energy-efficient features are attractive to buyers, especially with increasing emphasis on net-zero carbon homes in the UK.

Practical advice for UK homeowners and small business owners

• Assess your current windows and doors: Single-glazed or poorly insulated homes benefit the most from upgrades.
• Consider grants and schemes: From 2023 onwards, the UK government and some local councils offer grants and interest-free loans for home energy improvements, including windows and doors.
• Get multiple quotes: Prices vary widely—contact at least three installers who are FENSA-registered or equivalent-certified for accurate quotes.
• Install windows and doors together: Some suppliers offer discounts when you install both at the same time.
• Check for the right energy rating: Aim for A+ or higher to maximise savings.
• Factor in installation quality: Poor fitting can undermine energy efficiency benefits.

Common mistakes to avoid

• Choosing cheapest options without certification: Low-cost windows may lack insulation and weatherproofing, costing more in energy bills long term.
• Ignoring other heat loss areas: Energy-efficient windows and doors work best when combined with adequate loft insulation, draught-proofing, and heating system upgrades.
• Delaying installation: Rising energy costs in the UK mean earlier upgrades save more money and carbon emissions.
• Not considering style and regulation: For listed buildings or conservation areas, you may need specific window styles that still meet efficiency standards.

Summary

Energy-efficient windows and doors often come with a higher initial price tag in the UK, but this investment typically pays off through lower energy bills, improved comfort, and increased property value. With government incentives available and installation costs varying by material and quality, obtaining detailed quotes and certified products is essential. For UK homeowners and small business owners looking to reduce costs and carbon emissions, energy-efficient windows and doors are a worthwhile upgrade despite the upfront expense.