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Find National Window Installers

Compare top-rated window installation companies with FENSA certification to find the perfect fit for your window replacement project

National Window Installers

Everest Home Improvements
4.7

CoverageNational
Response Time24-48 hours
Service Plan£120 per year

Key Features:

  • FENSA and CERTASS certified installations with 20-year guarantee on uPVC windows
  • Professional survey and installation by dedicated Everest teams, never subcontractors

Works with: Everest, Pilkington

Anglian Home Improvements
4.6

CoverageNational
Response Time24-48 hours
Service Plan£100 per year

Key Features:

  • British-made windows with industry-leading energy efficiency ratings and Secured by Design options
  • Interest-free finance options with 10-year guarantee and aftercare service

Works with: Anglian, Pilkington...

Safestyle UK
4.3

CoverageNational
Response Time48-72 hours
Service Plan£80 per year

Key Features:

  • Price match guarantee with flexible payment options and no deposit required
  • Energy-efficient A-rated windows with Yale high-security locks as standard

Works with: Safestyle, Yale...

Why Choose Our Approved Installers?

All window installers on our platform meet our strict quality standards

FENSA Certified

Every installer is FENSA registered, ensuring compliance with building regulations and quality standards

Vetted & Reviewed

Customer ratings and verified reviews confirm the quality of workmanship and service

Competitive Pricing

Get quotes from multiple installers to find the best value for your window replacement project

What to Look for in a Window Installer

Certifications Matter

Always choose FENSA or CERTASS registered installers. These certifications ensure your windows are installed to meet building regulations and come with insurance-backed guarantees.

Material Expertise

Find installers with specific experience in your chosen window material (uPVC, aluminum, timber, or composite). Different materials require different installation techniques.

Warranty Terms

Compare warranty periods carefully. The best installers offer both product guarantees and workmanship warranties, with insurance backing for complete peace of mind.

Payment Terms

Look for flexible payment options and be wary of companies requiring large deposits. Reputable installers typically ask for a small deposit with the balance due upon completion.

Ready to Replace Your Windows?

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