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Harrington Windows
Premium window installation by Harrington Windows - energy efficient and aesthetically pleasing flush sash windows
Trusted by Homeowners Across the UK

Transform Your Home with Expert Window Craftsmanship

With over 25 years of industry expertise, Harrington Windows delivers beautiful, energy-efficient windows that enhance comfort, aesthetics, and value.

10-Year Guarantee
FENSA Certified
4.9/5 Customer Rating

Our Mission

At Harrington Windows, we transform houses into comfortable, beautiful homes through expertly crafted window solutions. Through meticulous material selection and precision installation, we deliver products that perfectly balance aesthetics, comfort, and energy efficiency.

With over 25 years in the industry, we've built our reputation on creating bespoke solutions that exceed expectations. Every project is approached with the same dedication to craftsmanship, sustainability, and customer satisfaction—whether it's a single window replacement or a complete home renovation.

Why Choose Harrington Windows?

  • Premium materials and expert craftsmanship for window solutions that last decades

  • Energy-efficient designs that can reduce heating costs by up to 25%

  • Comprehensive 10-year guarantee on all installations for complete peace of mind

  • Tailored consultations to find the perfect solution for your property's style and needs

Over 25 Years Experience

10 Year Guarantee

Harrington Windows craftsman installing a premium window

Our Core Values

These principles shape everything we do, ensuring every project reflects your vision and our dedication to quality.

Elegant sliding sash windows

Our Main Commitment: Turning Your Dream Project Into Reality

Craftsmanship

Every window is a masterpiece of precision and attention to detail, created by artisans with decades of experience.

Proven Expertise

With over 25 years in the industry, we've perfected our craft on thousands of homes across the UK, from cottages to mansions.

Energy Efficiency

Our high-performance windows can reduce energy bills by up to 30%, creating a comfortable home while reducing environmental impact.

Client Centric

Your vision is our priority. We guarantee a seamless, stress-free experience from initial consultation to final installation.

The Harrington Experience

We've refined our process over 25 years to create a seamless journey from initial consultation to aftercare, ensuring excellence at every step.

Harrington window expert consulting with client
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Step 1

In-Depth Consultation

Your journey begins with a comprehensive consultation where our window experts take time to understand your vision, requirements, and home's unique architecture. We'll discuss:

  • Style Assessment — We'll help you select window styles that complement your home's character and your aesthetic preferences
  • Technical Survey — Precise measurements and assessment of structural considerations
  • Performance Requirements — Discussing thermal efficiency, security, and acoustic considerations
  • Transparent Pricing — Detailed quotation with clear breakdown of costs and timeframes
Step 2

Bespoke Design & Planning

Once we understand your vision, our design team creates detailed specifications for your bespoke windows. This meticulous phase ensures every detail is perfect before manufacturing begins.

  • Custom Visualization — Detailed drawings and digital renderings to help you envision the final result
  • Material Selection — Guidance on choosing the optimal materials, hardware, and finishes
  • Technical Specifications — Detailed engineering plans ensuring structural integrity and performance
  • Planning Assistance — Support with any required planning permissions or building regulations
Detailed window design plans and material samples
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Harrington craftsmen installing windows with precision
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Step 3

White-Glove Installation

Our installation is where craftsmanship meets care. Our master fitters work with precision and respect for your home, ensuring minimal disruption and maximum quality.

  • Protective Measures — Comprehensive coverings for floors, furniture and belongings
  • Expert Craftsmen — Fully trained, experienced installers who take pride in their work
  • Quality Checking — Rigorous testing of each installation for operation and weatherproofing
  • Thorough Clean-up — Complete removal of all debris and professional cleaning of your new windows
Step 4

Dedicated Aftercare & Warranty

Our relationship continues long after installation. With industry-leading warranties and responsive aftercare, we ensure your windows perform beautifully for decades.

  • Comprehensive 10-Year Guarantee — Full coverage warranty on all window components
  • Post-Installation Review — Follow-up visit to ensure everything is performing perfectly
  • Maintenance Program — Optional service plans for regular professional cleaning and adjustments
  • Responsive Support — Dedicated customer service team for any questions or issues
Harrington aftercare specialist servicing windows
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Start Your Window Journey

Experience our award-winning process for yourself

What Our Clients Say

Don't just take our word for it. Here's what our valued customers have to say about their experience with Harrington Windows.

I live near a busy road, and the noise reduction has been incredible—my home is now 70% quieter! The kitchen used to get so cold in winter, but now it's much more comfortable and our heating bills are down by 25%.

Lucy Moore

5 days ago

I was worried about losing the original character of my Victorian home, but they recommended a style with authentic-looking glazing bars. Now, the house has that classic look but with all the benefits of modern insulation.

Eleanor Smith

7 days ago

We finally replaced our old windows with Harrington's uPVC range. The condensation is completely gone, and the house feels much more cozy. Their installation team was professional and clean—they even vacuumed afterwards!

Louise Baldwin

11 days ago

Our experience with Harrington Windows was brilliant from start to finish. The care they took in handling our houseplants near the windows during installation showed their attention to detail. 10/10 would recommend.

Alastair Montague

15 days ago

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Ready to Transform Your Home?

Take advantage of our limited-time offer: 20% off your first project. Let's create something beautiful together.

Our Service Locations

Premium Window Installation Across the UK