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Endorsed by Which? Trusted Traders

Harp Windows (Watford) Ltd

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59 Reviews

Opening Hours
Today - 09:30–17:00
  • Monday 09:30–17:00
  • Tuesday 09:30–17:00
  • Wednesday 09:30–17:00
  • Thursday 09:30–17:00
  • Friday 09:30–16:30
  • Saturday 10:00–14:30
  • Sunday - Closed

What is a Which? Trusted Traders Hertfordshire Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Hertfordshire Trading Standards to create a Hertfordshire Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check


Established in 1989, Harp Windows (Watford) Ltd is a family run company manufacturing and installing high quality replacement windows, doors and conservatories. 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 us, we do everything possible to ensure our customers are delighted with their new windows, doors or conservatory. For further peace of mind our customers are always welcome to visit us at our St Albans Rd showroom, or our factory in Watford, where we manufacture many of our products. There are many good reasons to choose us as your installer, including:

* Long established and local,
* Members of FENSA, The CPA and Checkatrade,
* Hertfordshire Trading Standards Approved,
* Our products are fully guaranteed for ten years,
* We offer guarantee protection insurance backed warranties,
* Comprehensive aftersales service for complete peace of mind.

What we do

  • Conservatories

    • Conservatory maintenance
    • Conservatory glass heat reduction film
    • Conservatory repairs
    • Hardwood conservatories and orangeries
  • Doors

    • Bi-fold doors
    • Patio doors
    • Fire doors
    • French doors
    • Orangeries
    • Composite doors
    • UPVC doors
    • Front door
  • Double glazing

    • Double glazing installation
    • Double glazing suppliers
    • Double glazing repairs
  • Glaziers

    • Aluminium Windows
    • Sash windows
    • UPVC Windows
  • More Services

    • window installations
    • upvc sash evolution timber replacement

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

59 reviews
Customer Service
Sort by
Two back doors: kitchen and garage
Customer Service
Harp Windows fitted two back doors, to replace old wooden, half glazed units. It was a pleasure to do business with them throughout. The installation team excelled themselves to be helpful.
Customer in Hertfordshire Posted on 11/02/2020 , work completed 11/02/2020
New door fitted
Customer Service
Used Harp windows previously to replace double glazed window. This time we was looking for replacement front door. As always staff very friendly, helpful, informative, professional. Always happy to respond to any issues that arise and when they make an appointment to visit always on time, pleasant & can sort any problem out. Highly recommend them.
Customer in Greater London Posted on 22/01/2020 , work completed 09/12/2019
Excellent Windows & Service
Customer Service
We set out to have our ancient double glazed units replaced with some trepidation as we are in an older property. We needn't have worried, the service and more importantly, the fitting, was excellent. Our fitter didn't stop from the moment he arrived, he took a real care in making sure the finish was just right and we were also pleased that Harp had recognised on their survey that our old windows were substantially out of fit, hence the reason it was so draughty! We have no hesitation in recommending them, they were to budget and accommodated the date we wanted them to be fitted. Many thanks!
Customer in Greater London Posted on 03/11/2019 , work completed 07/10/2019
Very happy
Customer Service
Excellent service from start to finish. Fitter was on time, professional and his standard of work was very high. He was also very clean and tidy.
Joanne, Hertfordshire Posted on 29/03/2019 , work completed 29/03/2019
My review
Customer Service
Replaced aging units.
Michael, Middlesex Posted on 28/03/2019 , work completed 28/03/2019
Speedy and professional
Customer Service
We replaced our patio doors and were very pleased with the speed of service and the quality both of the product and the performance of the fitting team.
Customer in Hertfordshire Posted on 26/02/2019 , work completed 25/02/2019
Excellent Service
Customer Service
We had a new front door, windows and surrounding frames. The team who worked on the project were efficient and polite. The work was carried out in the time scale given and all debris was removed and the property left clean and tidy. Could not fault the company from the Sales team to the installers. Would highly recommend them. We are very pleased with the finished product. Helen - Rickmansworth
Customer in Hertfordshire Posted on 31/01/2019 , work completed 11/01/2019
Quality windows
Customer Service
Work was carried out a month earlier than originally quoted, which was a very pleasant surprise & meant I didn't have to deal with another winter in a cold house. The fitter was very polite. He got on & did the job so well that it is difficult to tell where old & new pebbledash meet. Very happy. No haggling or 'I'll talk to my manager'. Just an old fashioned customer first business.
Samantha, Hertfordshire Posted on 13/12/2018 , work completed 13/12/2018
Excellent service
Customer Service
Supplied & installed new windows & doors to our commercial site. Excellent service, on time, within agreed costs - very professional organisation. I would not hesitate to recommend.
Richard, Hertfordshire Posted on 15/10/2018 , work completed 15/10/2018
Clean, efficient
Customer Service
Fitted double-glazed windows to bedroom. Price as quoted. Date of installation as quoted. Excellent work.
Which? Trusted Traders Consumer Posted on 29/08/2018 , work completed 29/08/2018