• Showroom & Head Office

    01923 231 111


Our commitment to our customers does not simply end once your installation is complete. We provide a comprehensive aftersales service which provides total peace of mind for all our customers.In the unlikely event that you should experience any issue with your installation, we are fully committed to providing our customers with an after sales service that is second to none:

  • We’re fully committed to rectifying any problem.

    In the unlikely event that any problem should arise after your installation, then we are fully committed to rectifying it, and at a time that’s convenient to you. We have our very own Service Engineer and we won’t keep you waiting in all day; we can usually be on site within 1-2 hours of your call if it’s urgent.

  • We are fully endorsed as a WHICH? Trusted Trader and we are Trading Standards approved.

    An additional layer of peace of mind for all our customers – we are proud to be endorsed by this well respected consumer champion and Hertfordshire Trading Standards.

  • We’re members of The Consumer Protection Association.

    The CPA administer our insurance policies for our guarantees. Each and every CPA member is thoroughly checked and approved to ensure they meet the exacting standards of best practices within their chosen trade. Only then are they eligible to join the CPA membership scheme that requires them to display consistent craftsmanship and excellent customer service.

  • We’re members of FENSA.

    And as members of FENSA, we are obliged to offer a guarantee or warranty covering the cost of completing rectification work in respect of defects and in the event of ceasing to trade, and offer to back this guarantee with an independent insurance policy.

  • Our products are fully guaranteed.

    All our products are supplied and fitted fully guaranteed for ten years and our Guarantee Protection Insurance backed warranties offer complete peace of mind for all our customers.

  • Members of Checkatrade since March 2014.

    Read genuine, unbiased testimonials from our customers and see how they rate us on our Checkatrade page


    The EU General Data Protection Regulation (GDPR) came into force across the EU on the 25th May 2018, and brings with it the most significant changes to data protection law in two decades. Based on privacy by design and taking a risk-based approach, the GDPR has been designed to meet the requirements of the digital age. The new Regulation aims to standardise data protection laws and processing across the EU; affording individuals stronger, more consistent rights to access and control to their personal information.

    Harp Windows are committed to ensuring the security and protection of the personal information that we process and hold on our customers, and to provide a compliant and consistent approach to data protection. We are dedicated to safeguarding the personal information under our remit and in developing a data protection regime that is effective, fit for purpose and demonstrates an understanding of, and appreciation for the new Regulation. We take the privacy and security of individuals and their personal information very seriously and we take every reasonable measure and precaution to protect and secure the personal data that we process.

    In accordance with the changes in the data protection law, we have updated our Privacy Notice. We collect your personal data when you visit our website and fill in the “QuickQuote” form on the home page, and if you book a free no-obligation quotation. This data is not passed on to any third party and is only used for the purposes of providing information as requested by the user. If you decide to go-ahead with us as your installer and sign our contract, we are obliged by Building Regulations to share your data with certain third parties, including FENSA and The Consumer Protection Association. This is for the purposes of fulfilling the requirements of the Competent Person Scheme for self-certification under the current Building Regulations. Personal data includes your name, address, telephone number and email address. This data is used to provide essential documentation for your insurance backed guarantee, deposit protection, and your FENSA certification and will be retained on file for the lifetime of the guarantee. We do not share your data with any other third parties.

In addition, customers also complete a short survey with the Consumer Protection Association. The CPA provides us with these results quarterly and annually and these are usually published on our Facebook page as a pie chart.

Find out more about us on our Facebook page, view more photos and “like” us to receive up-to-date news and special offers from Harp.

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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