• Showroom & Head Office

    01923 231 111

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    Quick Quote

    Welcome to Harp Windows– Pinner’s favourite Window Company, Est 1989

    Harp Windows is a family run company manufacturing and installing high quality replacement windows, doors and conservatories in Pinner, Eastcote, Hatch End, Oxhey and the surrounding areas

    Over the years, we’ve worked hard to build a reputation for professional integrity, efficient customer service, high quality products and value for money. Customer satisfaction is paramount to Harp Windows, we do everything possible to ensure our customers are delighted with their new windows, doors or conservatory. We are fully endorsed by WHICH as a Trusted Trader, plus you can read many reviews about us on Checkatrade – and for further peace of mind our customers are always welcome to visit us at our showroom at Bushey Arches, or our local factory where we manufacture many of our products.

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    There are many good reasons to choose Harp Windows as your installer, including:

    • Fully endorsed as a WHICH Trusted Trader and Hertfordshire Trading Standards approved.
    • We are members of FENSA.
    • Our products are fully guaranteed for ten years.
    • We offer guarantee protection insurance backed warranties.
    • We are members of The Consumer Protection Association and Checkatrade.
    • Comprehensive “aftersales service.”

    From our local showroom and factory we install high quality replacement windows, doors and conservatories in Pinner and throughout Middlesex and Hertfordshire.

    If you would like to receive a free, no obligation quotation please call us on 01923 231 111 or use our online “Quick Quote” service – we’re here to help. PLUS: Our blog is now up and running and features a range of articles about our products and exciting new developments within the industry.

    NOTE: In accordance with the General Data Protection Regulation, we have updated our Privacy Policy accordingly.

    Our Products


      Transform your living space with our market leading bifold doors and open up a multitude of possibilities in your home.


      A modern take on the traditional sliding patio door with the perfect blend of aesthetics and functionality.


      High specification composite, uPVC, timber alternative and aluminium front doors that will complement any home.


      Featuring timber-look mechanical joints with traditional internal timber aesthetics and deep wood-like cills, our Evolution windows look just like wood.


      Virtually indistinguishable from timber, our sash collection offers many advantages including increased thermal and acoustic performance, ease of operation, and low maintenance.


      Available in uPVC, aluminium and engineered timber, our casement windows offer better security features, more style choices and exceptional energy efficiency for your home.

    Read our customer feedback
    • A Banks, Bushey, Herts

      “Just a short note to thank all at Harp Windows for a job carried out efficiently and professionally and to my complete satisfaction. I shall have no problem with recommending Harp Windows to anyone, and in fact have already done so”

    • M Long, Hemel Hempstead, Herts

      “I had my windows and porch installed by yourselves and was very pleased with the service, so much so I Recommended them to two people who have since had installations from you …”

    Latest From Our Blog
    • Integral sealed unit blinds can be fitted inside any window or door in sizes from 300mm to 2600mm wide and in any frame – timber, aluminium or uPVC – and can even be

    • The Georgian window is the original multi paned window which became popular in the Georgian Period 1714 -1811 and was designed to bring in light, especially in darker


    • view more

    Endorsements & Reviews

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    Window unit replacement to a sash

    10 Verified Review

    Fantastic service from beginning to end. Local showroom in Watford with a super variety of windows and doors The fitment of the sash for my son's bedroom, best decision. Quality window and beautiful finish Paul and Miles are polite and friendly. Paul is a master at his job and Miles is super when finishing and completion. Thanks guys and thank you Harp Windows

    Location: WD25September 2023

    Replacement front door

    10 Verified Review

    All appointments on time. Advice useful when choosing design. Fitted in less time than expected.

    Location: WD23August 2023

    Bay Window Replacement

    10 Verified Review

    I have to say I have been impressed with HARP from start to finish. I was guaranteed the best price from John at the beginning, There was no hard sell or tricks, Just simple and honest. I ordered 1 window to replace my old bay which I was advised would take 6 weeks from ordering. My window arrived slightly earlier than anticipated and was fitted without delay. The fitting team worked in a clean and tidy manner, were punctual and had a great attention to detail.

    Location: WD24July 2023

    Supply rear door.

    10 Verified Review

    Excellent service, most helpful and friendly. Highly recommend.

    Location: BH10May 2023

    2 x casement windows

    10 Verified Review

    Very pleased with product and workmanship. All done with no fuss and no mess. Brilliant job. Billy even hoovered up afterwards !

    Location: WD18May 2023

    New windows and doors

    10 Verified Review

    Excellent service from both the showroom staff and the fitting team . Quality of the windows and doors is very good , and would highly recommend this company

    Location: WD24April 2023

    Read all 250 reviews

    • Harp Windows (Watford) Ltd
    • 91-93 St Albans Road
    • Watford
    • Hertfordshire
    • WD17 1UL



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