Endorsed by Which?

ZEN Windows & Conservatories

5.0

42 Reviews

Opening Hours
Today - 09:00–17:00
  • Monday 09:00–17:00
  • Tuesday 09:00–17:00
  • Wednesday 09:00–17:00
  • Thursday 09:00–17:00
  • Friday 09:00–17:00
  • Saturday 09:00–17:00
  • Sunday 10:00–15:00

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About

We specialise in replacement windows, doors and conservatories. All of our windows are A-rated as standard and our products covered by solid guarantees which are insurance backed. We are Certass registered and approved to carry out installations in accordance with current building regulations. We supply the superb Duraflex Diamond Suite PVCU system, and specify Ultraframe for all of our conservatory roofs; both of which are second to none in terms of quality and durability.

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing suppliers
    • Double glazing repairs
  • Conservatories

  • Glaziers

    • Replacement window services and repairs
    • Window consultants
    • Double glazed units
    • Double glazing installation
    • Double glazing repair
    • Sash windows
    • UPVC Windows
  • More Services

    • window installation
    • window installers
    • window company

Customer reviews

Why you can trust these reviews

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

5.0
42 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
Exceptional service
Customer Service
Quality
Value
A friend highly recommended Zen, and we’re extremely pleased we chose them to install our new windows and doors. From start to finish, the process was great. During the installation, we raised a couple of concerns because a few things didn’t look quite as we expected, but after discussing them with the installers, the changes were made promptly and everything still finished on time. Big shout-out to Matt in the office and our installers, Steve and Jamie - you guys were great!
Customer in South Gloucestershire Posted on 14/11/2025 , work completed 17/10/2025
Excellent service from start to finish
Customer Service
Quality
Value
We are extremely happy with Zen windows this is the second lot of window we have had installed by this company, from our first contact with Matt for our quote, Jeff who booked the installation and Andy and Archie who fitted the windows they explained everything that need doing and cleared up afterwards. Excellent work and the windows look amazing
Customer in Bristol City Posted on 09/11/2025 , work completed 06/11/2025
High Quality, Clean, and Efficient
Customer Service
Quality
Value
Had new french doors fitted. The communication was excellent from the outset, and the work completed was to a very high standard. The fitters were also very clean, and left no mess behind at all. A great service overall, and would recommend.
Customer in Bristol City Posted on 01/11/2025 , work completed 30/10/2025
Good experience with Zen
Customer Service
Quality
Value
Zen replaced all my windows with new PVC ones. It was a good experience from initial contact through to the quote and actual work. I changed my mind on a couple of things and it was all fine. Information was clear and Zen were flexible and good at communication throughout. Work was done considerately and on time. I’m very happy with the new windows!
Customer in Bristol City Posted on 01/11/2025 , work completed 29/10/2025
Quality work & outstanding craftsmanship
Customer Service
Quality
Value
Zen Windows & Conservatories replaced a wooden-framed conservatory, sash bay windows and front door. The entire experience, from start to finish, was exemplary, from Ben visiting the house to explain Zen's products and process and provide a quote, right through to the installation team. Our conservatory is a non-standard shape, and I gather it was quite a challenge to fit. However, Andy & Archie did a beautiful job of installing the new one, going above & beyond to ensure everything was done properly, finishing it off to a very high standard. We had a Warmer Roof installation, which is already significantly better than the old plastic roof. The plasterer & electrician were also both great. Everyone involved was respectful of our home and left it tidy each day throughout the works. The finished conservatory looks amazing and more like an extension. We could not be more pleased with it. We also had replacement sash bay windows. Again, this wasn't a straightforward job, with not a single straight wall in the house. However, Andy & Archie did a lovely job. Finally, the front door was replaced with a stunning composite door. It all looks absolutely fantastic and is finished off beautifully, both internally and externally. We've had so many comments about how lovely the house looks! Overall, the project was a great experience, and I wholeheartedly recommend this company. They were so good that I've just had Ben back to quote for replacing our remaining sash windows!
Customer in Bristol City Posted on 03/10/2025 , work completed 05/09/2025
Replacement Bathroom Window
Customer Service
Quality
Value
Zen Windows replaced a window in our bathroom. From the first visit for a quotation to the final completion of the work everyone we dealt with was professional, helpful and a pleasure to deal with. Stacey, in the office called to keep us up to date with progress and called after completion to check that we were happy with the results. The quality of the window is excellent. This is the fourth time we have had work done by Zen and I would highly recommend them.
Customer in Bristol City Posted on 24/08/2025 , work completed 08/08/2025
Excellent work
Can not fault this company quick efficient service all staff polite good work done quickly and site left tidy would highly recommend will go back when we need more windows etc fitted
Customer in Bristol City Posted on 08/08/2025 (Reviewer did not use service)
Outstanding Service and Craftsmanship from Zen Windows – Highly Recommended
Customer Service
Quality
Value
We used Zen Windows in Bristol to replace our old, broken wooden sash windows and had a brilliant experience from start to finish. Ben, the General Manager, was excellent – clear, helpful, and never pushy. He priced the job fairly and explained everything in a professional and approachable way, giving us total confidence in the service. Matt, who handled the scheduling, was also fantastic – always quick to respond, clear in his communication, and helpful throughout. The whole process felt smooth and well-managed. The fitters – Mitch, Dan, and Kieran – were outstanding. They were polite, friendly, tidy, and extremely skilled. The job involved fitting a large number of sash windows, many of them irregular and tricky to install, but the team worked with great care and precision. The finishing was just as impressive – from the bath stone patching to the interior carpentry, including window surrounds and architraves, everything was done to a very high standard. Their attention to detail and pride in their work really showed. We’re absolutely thrilled with the end result – the windows look fantastic and have transformed our home. Zen Windows were a pleasure to deal with at every stage, and we would highly recommend them to anyone looking for quality windows and outstanding service.
Customer in Bristol City Posted on 05/08/2025 , work completed 31/05/2025
Sturdy, elegant, well fitted windows
Customer Service
Quality
Value
Zen had previously installed a conservatory for us, with good aftercare. This time, they installed six windows (including two bay windows), with acoustic glass. They were incredibly helpful in arranging an advanced date that fitted in with our complicated family arrangements and completed the work quickly. The guys were prompt, very helpful, hard working, tidy, and clean. They carefully discussed the work with me as they went along and were willing to make some adjustments to the way they were fitted. This resulted in me being delighted with the appearance of the windows, the way they were installed and their acoustic quality.
Customer in Bristol City Posted on 11/07/2025 , work completed 10/07/2025
Zen Windows - top service for fitting new windows
Customer Service
Quality
Value
I had high hopes of Zen Window, an established and local family run business, having been recommended them by a friend. But they more than exceeded my expectations. The helpful, professional and personal service was exceptional from the first point of contact until the completion of the installation of 4 high spec quality windows in two rooms. The fitters were diligent throughout the two days it took to complete the job, and left the window surrounds in a spotless condition with no need for any reparation work. In addition they arranged the installation and, with no delays, the removal of the scaffolding. Massive thanks from a delighted customer!
Customer in Bristol City Posted on 28/05/2025 , work completed 07/03/2025