Business Details
37 Years
experience
Trusted Replacement Windows & Doors in Watford
Established in 1989, Harp Windows is a family-run business with over three decades of expertise in manufacturing and installing high-quality replacement windows, doors, and conservatories. Our reputation is built on professional integrity, efficient customer service, and a commitment to delivering value for money. We are proud to be endorsed by Which? as a Trusted Trader and to hold memberships with the Consumer Protection Association, FENSA, and Checkatrade, reflecting our adherence to industry standards. Our comprehensive aftersales service ensures long-term customer satisfaction, with a 10-year product guarantee and insurance-backed warranties. Based in Watford, we serve Hertfordshire, Buckinghamshire, Middlesex, and North London, offering tailored solutions to meet diverse customer needs.Our team combines technical expertise with a dedication to craftsmanship, ensuring every installation meets exacting standards. Transparency and honesty guide our interactions, with no hard-selling tactics and fixed pricing agreed upfront. Our showroom and factory visits allow customers to experience our products firsthand, fostering trust and confidence. With over 250 verified reviews, we consistently receive praise for our punctuality, attention to detail, and clean working practices. Our dedication to data protection and GDPR compliance underscores our commitment to customer trust, ensuring personal information is handled securely and responsibly.
Services
Windows
Doors
Conservatories
Bi-Folding Doors
Sash Windows
Casement Windows
Composite Doors
Aluminium Installations
Evolution Flush Windows
Sliding Sash Windows
Details
- Year established: 1989
Highlights and features
- We have over 35 years of experience in window and door installations.
- Fully endorsed by Which? Trusted Trader for reliability and quality.
- FENSA-registered with a 10-year insurance-backed product guarantee.
- Comprehensive aftersales service with rapid response times for repairs.
- Consistently praised in over 250 verified customer reviews for professionalism.
Associations and certifications
- Which? Trusted Trader
- FENSA
- Consumer Protection Association
- Checkatrade
What people say
Fantastic service
Excellent workmanship
No fuss
Highly recommend
Professional team
Services
Windows
We offer a range of high-quality replacement windows, including casement, sash, and Evolution timber-alternative designs. Our products combine thermal efficiency, security, and aesthetic appeal, tailored to enhance any property. With a 10-year guarantee, our installations ensure long-term durability and customer satisfaction.
Doors
Our door solutions include composite, bi-folding, and sliding options designed for security, energy efficiency, and modern aesthetics. Backed by a decade-long warranty, our installations are completed by skilled professionals committed to precision and minimal disruption for homeowners.
Conservatories
We design and install conservatories that maximise natural light and extend living spaces. Built with durable materials and expert craftsmanship, our conservatories offer year-round usability and are supported by comprehensive aftersales support.
Bi-Folding Doors
Our bi-folding doors create seamless transitions between indoor and outdoor areas. Featuring sleek designs and robust construction, they are ideal for modernising homes while maintaining energy efficiency and security standards.
Sash Windows
Specialising in sliding sash windows that mimic traditional timber aesthetics with modern benefits, we provide enhanced thermal performance and low maintenance. Each installation is completed with meticulous attention to historical accuracy and functionality.
Questions
What services does Harp Windows offer?
We specialise in replacement windows, doors, and conservatories, including sash, casement, bi-folding, and composite designs.
Are your products guaranteed?
Yes, all installations come with a 10-year insurance-backed guarantee for added peace of mind.
Which areas do you serve?
We operate across Watford, St Albans, Harrow, Hemel Hempstead, and surrounding areas in Hertfordshire, Buckinghamshire, and North London.
What accreditations do you hold?
We are a Which? Trusted Trader, FENSA-registered, and members of the Consumer Protection Association and Checkatrade.
Can I visit your showroom?
Yes, our Watford showroom is open Monday-Friday 10am-3pm and Saturday 10am-2:30pm by appointment.
Videos
Reviews (6)
Reg Lopez
Dec 02, 2021
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The team from Harp did a great job with our windows. From providing all the info needed to comply with the landlord's licensing requirements to installation. The windows look lovely and the guys did an amazing job with so little mess. Very pleased indeed. Given the windows industry suffers a bit in terms of reputation, it's been a pleasure to deal with knowledgeable, good people before and during the installation. Thank you - we are really pleased and wouldn't hesitate to recommend.
Alex Jones
Oct 16, 2021
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What fantastic service I have received from the start of engaging with Harp until completion of the job. Everyone was an absolute pleasure to deal with and the windows look great - the left so little to sort out and cleaned up so nicely. I would highly recommend Harp to anyone!
Terry Jones
Jul 23, 2021
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Fantastic job, v professional results. And it was the cheapest quote too. The guys took pride in their work & seemed to enjoy it. Replaced all our windows & a door & it looks great. Wish they'd worn ear defenders to protect themselves though! Not enough people look after themselves on the job.
David Elliott
Sep 13, 2020
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Just to thank John & his colleague from Harp Windows Watford who responded today to a team member's emergency when a door would not lock. Visited very quickly & sorted out the problem with expertise & good humour on a very hot day Harp Windows Highly recommended
Jimviv
Dec 24, 2019
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Just had two bay windows renewed. Excellent work by careful and thoughtful installers, and reasonable prices. Highly recommended.
F. Sh
Nov 30, 2018
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Fantastic service and price. Reliable, clean and tidy install. Highly recommend, I wouldn't use anyone else.
