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"Outstanding service from initial consultation to final installation. Our new sash windows have transformed our Mayfair home's appearance while significantly improving warmth and comfort."
Charlotte & Robert Wilson
Mayfair
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Mayfair, London Sash Window Specialists
Sash Windows in Mayfair, London
Transform your Mayfair home with draught-free, secure sash windows that combine authentic period style with modern performance, cutting heating costs by up to 40%
⭐⭐⭐⭐⭐Rated 4.9/5 by Mayfair customers
10 Year Guarantee
Conservation Approved
Sash Windows for Mayfair, London Homes
Local Specialists in Period Window Design
Our premium sash windows are expertly designed for Mayfair properties, combining authentic period elegance with cutting-edge performance features that perfectly complement the architectural heritage found throughout Mayfair, London.
Whether you own a heritage period property, conservation area home, or a contemporary residence in Mayfair, our master craftsmen create sash windows that enhance your property's character while delivering superior energy efficiency (A+ rated), enhanced security, and exceptional noise reduction.
Every sash window installation in Mayfair is backed by our comprehensive 35-year guarantee and installed by our own local, fully-qualified installation teams—never subcontractors—ensuring consistent, premium quality results.
Authentic Period Aesthetics
Perfect replication of traditional sash windows for Mayfair homes
Local Mayfair Expertise
Tailored solutions for Mayfair, London's unique property styles
Perfect for Conservation Areas
Approved designs for Mayfair's protected neighborhoods
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Bespoke sash windows for Mayfair
Tailored to your property's unique character
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Why Choose Harrington for Your Mayfair Sash Windows
Our Expertise & Credentials
Industry Certified
Our Mayfair installations are backed by FENSA certification, Glass and Glazing Federation membership, National Trading Standards approval, and Installsure 10-Year insurance-backed guarantees.
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Energy Performance
Our sash windows achieve A+ energy ratings - the highest available for any window product. This high-performance glazing can reduce heating costs by up to 40% for Mayfair homeowners.
A+ Rated Windows
25+ Years Experience
Our master craftsmen have been installing sash windows in Mayfair for over 25 years, with specific experience in local conservation areas and period properties.
Excellent
Trustpilot
TrustpilotLocal Mayfair Knowledge
Harrington Windows is the most highly rated sash window specialist in Mayfair, London, with unmatched knowledge of local architectural styles and conservation requirements. Our team includes Mayfair residents who understand the specific needs of properties in this area.
Conservation area approved designs
Dedicated Mayfair installation team
Award-winning customer service
Sash Window Details for Mayfair, London Properties
Crafted With Precision for Local Homes
Authentic Design Features for Mayfair Homes
Our sash windows are meticulously designed to replicate the traditional timber windows found in Mayfair, London while incorporating modern materials and techniques for superior performance.
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Slim 35mm Midrail
Elegant, slim profile that maximizes glass area while maintaining authentic proportions.
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Mechanical Butt Joints
Traditional joinery techniques that create authentic corner details without visible welding.
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Seamless Sash Horns
Optional decorative sash horns that replicate traditional timber window details.
Traditional Styling
Crafted for Mayfair, London homes
Sash Windows Gallery in Mayfair, London
Recent Mayfair Sash Window Installations
Browse our portfolio of recently completed sash window installations in Mayfair and surrounding areas. Each project showcases our commitment to quality craftsmanship and attention to detail for local properties.
Premium timber sash windows installed in Mayfair home
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A-rated energy efficient sash windows for Mayfair, London property
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Traditional box sash windows enhancing Mayfair period home
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Modern sash windows fitted in Mayfair, London town house
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Georgian style sash windows for Mayfair conservation property
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High-security sash windows with heritage appeal in Mayfair, London
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Authentic sliding sash windows in Mayfair Victorian home
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Double-glazed sash windows for Mayfair, London period property
Frequently Asked Questions About Mayfair Sash Windows
Everything you need to know
Find answers to common questions about sash windows installation and replacement in Mayfair, London
Still have questions?
Our local Mayfair window experts are here to help you with any specific questions or requirements about sash windows for your property.
Mayfair Customer Testimonials
Hear from our satisfied clients
"The quality of Harrington's sash windows is exceptional. They've perfectly matched our period property's style while providing modern insulation. Couldn't be happier with the results and the professional installation."
William Thompson
Mayfair, London
"After researching several companies, we chose Harrington Windows for our conservation area property in Mayfair. Their knowledge of local requirements and attention to detail was outstanding. The windows look beautiful."
Victoria & Jonathan Harris
Mayfair
4.9 out of 5
9.87 out of 10
4.8 out of 5
No obligation • Free consultation
Sash Window Specialists in Mayfair, London
Find Us in Mayfair
Our sash window installation services cover all areas in and around Mayfair. We provide free consultations and on-site measurements throughout Mayfair, London.
Service Area
Mayfair, London and surrounding areas
Hours
Mon-Fri: 9am-5pm
Sat: 10am-4pm
Areas We Serve in London
Our Sash Window Services Near Mayfair
We provide our premium sash window services throughout London, including Mayfair and the following nearby areas:
RichmondTW9ChiswickW4EalingLondonKensingtonW8ChelseaSW3FulhamLondonHammersmithLondonNotting HillLondonActonLondonShepherds BushLondonTwickenhamLondonPutneyLondonWimbledonSW19Ealing BroadwayLondonBarnesLondonChiswick MallW4Maida ValeLondonPaddingtonLondonSt Johns WoodLondonKensal RiseLondonHammersmith GroveLondonKew GardensLondonBeaconsfieldLondonGerrards CrossLondonHarrow on the HillLondonPinnerLondonNorthwoodLondonUxbridgeLondonWembleyLondonRuislipLondonBrentfordLondonHolland ParkLondonKnightsbridgeLondonBelgraviaLondon
Not seeing your area?
We serve many more locations in and around London. Contact us to check if we cover your specific area.
Ready to Transform Your Mayfair Home?
Get started with a free consultation and quote. Our Mayfair experts are ready to help you find the perfect sash windows for your home.
No-obligation quotes
Free Mayfair home consultation
10 Year Guarantee