Get 20% Off your First Project
Premium uPVC Windows
Enhance your home with durable, energy-efficient uPVC windows that reduce heating costs by up to 30% and require minimal maintenance.
Rated 4.9/5 from 300+ reviews
- 10 Year Guarantee
- Energy Efficient
uPVC windows are the UK’s most popular window type, made from unplasticised polyvinyl chloride frames with double or triple glazed sealed units. Average cost: £350–£800 per window installed. They offer A+ energy ratings, require virtually no maintenance, and last 20–30 years. Harrington Windows installs bespoke uPVC windows across London, Hertfordshire, Essex, and Cambridge with a 10-year guarantee.
Why Choose uPVC Windows for Your Home?
Introduction
Designed for modern homes and lifestyles, our premium uPVC windows combine exceptional durability with outstanding energy efficiency and security features.
Each window is custom-manufactured to your exact specifications, offering superior thermal insulation, enhanced security, and a wide range of styles and finishes to complement your home.
Superior Energy Efficiency
Multi-chambered profiles lock in heat and reduce energy loss
Enhanced Security
Advanced multi-point locking systems for complete peace of mind
Tailored to Your Home
Extensive range of styles, colours, and finishes to match any aesthetic
Superior Energy Efficiency
Built for lasting performance
Years Lifespan
Minimum expected durability
Energy Savings
Average heating cost reduction reported by customers
Satisfaction
Customer satisfaction rate across installations
Year Guarantee
Full parts and labour warranty
Star Rating
Average customer review
20% OFF
Your First Project
Limited time offer for new customers. Transform your home with our premium uPVC windows.
*Terms and conditions apply. Offer valid until end of month.
What Are the Key Benefits of uPVC Windows?
Why Choose Our uPVC Windows
Our uPVC windows combine premium materials with precision engineering
to deliver exceptional performance for decades.
Enhanced Security
Multi-point locking systems and reinforced frames for complete peace of mind
Energy Efficient
A+ rated windows that help reduce energy bills by up to 30%
Low Maintenance
Easy to clean and never needs painting or treating
Weather Resistant
Excellent protection against the elements with superior sealing
Why Are uPVC Windows Built for Everyday Living?
Every Harrington uPVC window is fabricated with premium-grade profiles and hardware to deliver outstanding durability, weather resistance, and day-to-day ease of use.
Reduces heating costs by up to 30%
A+ energy rating available
Excellent noise reduction properties
What Makes Our uPVC Windows Stand Out?
Engineered for Excellence
What Design Features Do Our uPVC Windows Offer?
Our uPVC windows are engineered with advanced materials and techniques to provide superior performance and aesthetics.
Multi-Chambered Profiles
Advanced uPVC profiles with multiple internal chambers for superior thermal insulation and strength.
Precision-Welded Corners
High-quality fusion-welded joints creating seamless, weather-tight corners for maximum durability.
Versatile Design Options
Customisable frame styles, opening configurations, and decorative features to complement any home.
How Secure Are Our uPVC Windows?
Every window is built with security in mind, from reinforced frames to police-approved locking systems.
Multi-point locking system
uPVC-compatible locking mechanisms that secure windows at multiple points around the frame
Reinforced frames and sashes
Internal galvanised steel reinforcement in uPVC profiles for enhanced structural integrity
Toughened or laminated glass
Safety glass options perfectly paired with uPVC frames for maximum security
Secured by Design upgrades
uPVC windows that meet or exceed police-approved security certification standards
How Energy Efficient Are uPVC Windows?
Our uPVC windows achieve exceptional thermal performance, helping to reduce energy bills and create a more comfortable living environment throughout the year.
Multi-chamber profile
Multiple internal chambers provide excellent thermal insulation
High-performance glazing
Double or triple glazing with warm edge spacer technology
Advanced weather seals
Multiple seals eliminate draughts and water ingress
Low-E glass coating
Reflects heat back into your home during winter
What Colour and Finish Options Are Available?
Choose from classic whites, contemporary greys, and authentic woodgrain finishes. Dual-colour options allow different interior and exterior palettes
Agate Grey
Anthracite Grey
Balsalt Grey Sanded
Dark Oak
Grey Sanded
Mahogany
Oak Alpine
Oak Special
Oregon
Steel Blue
Walnut Ameretto
Walnut Terra
Walnut
What Glass Options Can You Choose?
Select from premium Pilkington decorative glass styles to achieve the perfect balance of privacy and light.
Chantilly
Delicate pattern with high privacy
Charcoal
Bold contemporary design with high obscurity
Contour
Wave-like texture with medium privacy
Digital
Modern, pixelated design for a distinctive look
Flemish
Traditional handcrafted appearance
Florielle
Decorative floral pattern to diffuse light
Laurel
Elegant leaf motif with balanced opacity
Minister
Classic textured surface with high privacy
Stippolyte
Popular stippled effect for excellent coverage
Sycamore
Nature-inspired design with moderate obscurity
Autumn
Seasonal leaf pattern with warm character
Cotswold
Pebbled finish ideal for bathrooms
Mayflower
Decorative floral design with premium feel
Taffeta
Fabric-like finish offering soft light diffusion
How Does Our uPVC Window Installation Work?
A Seamless Experience From Start to Finish
Free Consultation & Measure
Our local experts visit your home to understand requirements, take precise measurements, and provide tailored advice.
Detailed Design & Quote
We prepare a custom window design that suits your home’s style and deliver a clear, no-pressure quote.
Manufacturing
Your uPVC windows are precision-manufactured using quality materials and advanced production techniques.
Professional Installation
Our skilled fitters install your uPVC windows with minimal disruption, typically taking just 1-2 days.
Final Inspection & Aftercare
We conduct a thorough inspection and walkthrough, backed by comprehensive guarantees and aftercare.
Free Consultation & Measure
We take precise measurements of your existing windows and discuss style, colour, and functional preferences. Our team assesses your property’s needs and explains the best options available.
Detailed Design & Quote
Following the consultation, we prepare detailed CAD drawings and a transparent, itemised quote. You’ll have time to review and request adjustments before proceeding.
Precision Manufacturing
Once approved, we craft your windows in our state-of-the-art facility. Each component is engineered to exact specifications and quality checked throughout production.
Professional Installation
The installation team works efficiently and respectfully, removing old windows and fitting new ones with minimal disruption. We protect your home throughout and tidy as we go.
Final Inspection & Aftercare
After installation, we demonstrate operation and cleaning, complete a detailed quality check, and activate your guarantees. We’re on hand for any future support.
What Guarantees Do We Offer on uPVC Windows?
Your peace of mind is our priority
30-Year Frame Guarantee
Our uPVC frames are guaranteed to maintain structural integrity for 30 years.
10-Year Installation Warranty
Every installation includes a full 10-year workmanship warranty.
Insurance-Backed Guarantee
All guarantees are insurance-backed by trusted UK providers.
Rapid Response Promise
In the unlikely event of an issue, we guarantee a 48-hour callout.
Frequently Asked Questions
Everything you need to know about our uPVC windows
Our uPVC windows are built to last 30+ years with minimal maintenance. They use high-grade materials and comprehensive guarantees for peace of mind.
Yes, our uPVC windows achieve an A+ energy rating with multi-chambered profiles and high-performance glazing to reduce heating costs by up to 30%.
They come with multi-point locking systems, reinforced frames, toughened glass options, and can meet Secured by Design standards.
No, uPVC windows are very low maintenance. They only require occasional cleaning and never need painting or treating. Frames won't rot, warp, or corrode.
We offer a wide range of colours and finishes, including woodgrain effects and dual-colour options to match interior and exterior schemes.
We provide guarantees covering frames (30 years), glazing units (10 years), hardware (10 years), and installation (10 years), all insurance-backed.
Ready to Transform Your Home?
Get started with a free consultation and quote. Our experts are ready to help you find the perfect uPVC windows for your home.
- No-obligation quotes
- Free home consultation
- 10 Year Guarantee
Dayanidhi
Dayanidhi
