Transform Your Home with Harp Windows - Experience the Difference!
Established in 1989, Harp Windows is a family-run company manufacturing and installing high-quality replacement windows, doors, and conservatories. We have built a reputation for professional integrity, efficient customer service, high-quality products, and value for money. Our customer satisfaction is paramount, and we do everything possible to ensure our customers are delighted with their new windows, doors, or conservatory.
Our Services
We offer a comprehensive range of services, including the installation of high-quality replacement windows, doors, and conservatories. Our products are fully guaranteed for ten years, and we provide guarantee protection insurance-backed warranties for added peace of mind. We are fully endorsed as a WHICH Trusted Trader and Hertfordshire Trading Standards approved, and we are a FENSA registered company.
Our Products
Our product range includes casement windows, sash windows, evolution windows, aluminum windows, timber alternative windows, bi-folding doors, composite doors, French doors, patio doors, and origin doors. We also offer a range of conservatories and orangeries, perfect for adding extra living space to your home.
Why Choose Harp Windows
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
- Origin Premium Partners
- FENSA registered company
- Ten-year guarantee on all products
- Guarantee protection insurance-backed warranties
- Comprehensive aftersales service
- Members of The Consumer Protection Association and Checkatrade
Our Showroom and Factory
Our showroom is open Monday to Friday from 10am to 3pm and Saturday from 10am to 2:30pm, by appointment only. We are located at 91-93 St Albans Road, Watford, WD17 1UL. Our factory is also located in Watford, where we manufacture many of our products. We invite you to visit us at our showroom or factory to see our products up close and meet our friendly team.
Customer Testimonials
We are proud of our excellent customer service, and our customers are happy to testify to our professionalism and attention to detail. You can read many reviews about us on Checkatrade and view our video testimonials to see what our customers have to say about us.
Customer Reviews Summary
Installation Quality and Professionalism
The majority of customers praised Harp Windows for their high-quality installation services, professionalism, and attention to detail. Many reviewers commended the company's fitters for being courteous, tidy, and efficient, making the installation process as smooth as possible.
Customer Service
Customers appreciated the helpful and knowledgeable sales team, particularly John, who went above and beyond to ensure their needs were met. The company's communication was also praised, with customers feeling informed throughout the installation process.
Product Quality
Reviewers were thrilled with the quality of the windows and doors installed, with many commenting on the excellent workmanship and the resulting improvement to their homes.
Recommendations
Unsurprisingly, the overwhelming majority of customers would highly recommend Harp Windows to friends and family, praising the company's exceptional service, quality products, and professionalism.

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