Endorsed by Which?

Eco Thermal Design Ltd-Barnsley

5.0

65 Reviews

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

Why you can trust this trader

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About

Eco Thermal Design Ltd provides a friendly reliable service supplying and installing composite doors and A rated energy efficient upvc windows to customers throughout the local area.

The company, which is located in Barnsley, originally started out in 2003 as manufacturers and now are one of the main installers of Kommerling lead free energy efficient windows and doors throughout Barnsley, Doncaster and Sheffield with over many years of experience in the Window, manufacturing and Installation industry.

The company aims to supply homeowners with a professional tailed made services and has a very high standard of workmanship.

The expert staff ensure customers satisfaction. The service is intended to achieve this every time.

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Doors

    • Bi-fold doors
    • ​Aluminium doors
    • Composite doors
    • Fire doors
    • French doors
    • Front door
    • Patio doors
    • UPVC doors
  • Conservatories

    • Conservatory glass heat reduction film
    • conservatory roof conversions
    • conservatory roof insulation
    • Conservatory Roof replacement
  • Glaziers

    • Aluminium Windows
    • Double glazed units
    • Double glazing installation
    • Glass boarding up and replacement
    • Replacement window services and repairs
    • Sash windows
    • Stained glass
    • Timber windows
    • Triple Glazing
    • UPVC Windows
    • Velux windows

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.

5.0
65 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
Outstanding Service from Start to Finish!
Pat and the team at Eco Thermal Design Ltd have been absolutely fantastic. From the very first consultation to the final installation, their professionalism, attention to detail, and genuine care for quality really stood out.
Customer in West Yorkshire Posted on 10/11/2025 (Reviewer did not use service)
The trader replied (on 18/11/2025)
Thank you ,we appreciate you taking the time to post a review. We are grateful for your kind words and happy to know that you were pleased with our customer service and our installation team. If we can help you in the future please do not hesitate to contact us.
Excellent job - finished on time
Customer Service
Quality
Value
Ian and Liam replaced our windows and did a great job. We had our windows replaced for the whole house in Storm Amy, and they adjusted the plan of replacement due to the weather (no one wants to be up ladders in a storm!). No hassle - arrived on time each day and cleared up when finished. They were quiet, efficient, and they completed the job on time. We had a slight problem with one of the windows being difficult to open. They came back and resolved the issue with no problems. Highly recommend.
Customer in South Yorkshire Posted on 24/10/2025 , work completed 15/09/2025
The trader replied (on 28/10/2025)
Thank you for taking the time to write a review. We are pleased that you are happy with our products and workmanship and we hope that we can help you in the future.
Quality Products Fitted Professionally
Customer Service
Quality
Value
I invited this company to quote for 5 new windows and 2 new doors for my house. It was the owner who visited, so no pushy sales talk just a pleasant chat about the quality of the products and what could be offered to match my requirements. The quote was reasonable so I accepted and I an really glad I did. The fitters were Ian and Liam and they have been so professional in their work and very respectful of my property (i.e. dust sheets on the carpets and all messed cleared up). I am delighted with the quality of the doors and windows and how neatly they have been fitted. They promised that there would be no need to redecorate afterwards and they were right, no torn wallpaper or chipped paint. Money well spent and I would not hesitate to recommend this company to anyone wanting new doors and windows.
Customer in West Yorkshire Posted on 16/06/2025 , work completed 16/06/2025
The trader replied (on 28/10/2025)
Thank you for taking the time to leave us a review. Your kind words mean a lot to our team and we are so glad that you had a positive experience with Eco Thermal Design. If we can help you in the future please do not hesitate to contact us.
Outstanding Service
Customer Service
Quality
Value
Having previously had our windows replace by ETD, they were our first option when we needed to source windows and doors for our new ground floor extension. From start to finish, the service was excellent. With great communication from Joanne and Patrick, out of hours showroom visits with Paul, and a cracking job from the fitting team. Our new Schuco doors and windows were fitted on time and to a very high standard. We are very happy customers.
Customer in South Yorkshire Posted on 09/06/2025 , work completed 27/11/2024
The trader replied (on 28/10/2025)
Thank you so much for your kind review and your trust in us. We are so happy that you came back to us and hope to help you in the future. Your 5-star review means a lot to our team.
timber 'sunroom' frame changed
Customer Service
Quality
Value
We had an existing timber 'sunroom' frame changed by Ecotherm and they did a really good install job. The guys were polite and very helpful, keeping us informed if any little snags that cropped up and suggesting work around. They even completed the job earlier than expected and to a good standard. We only had one issue from the manufacturing process but this was resolved financially. Would definitely use Ecotherm again.
Customer in Posted on 20/03/2025 , work completed 11/03/2025
The trader replied (on 21/03/2025)
Thank you for taking time to post a review, we appreciate it. We are pleased that you are happy with the products and work ,and that all was resolved to your satisfaction. We hope that we can help you in the future.
Great work efficiently carried out
Customer Service
Quality
Value
We have used eco-therm previously replacing our doors and it was now time to improve our windows. We received a great quote which included the free triple glass upgrade offer. We were given a date and time and Ian who has previously worked for us and his colleague Liam turned up promptly to start work. They were very efficient, clean and tidy as they worked and the replacement windows were fitted in no time at all. We can’t thank them enough and we are noticing how warmer the bungalow is now. Thank you.
Customer in South Yorkshire Posted on 15/02/2025 , work completed 05/02/2025
The trader replied (on 04/03/2025)
Thank you for your review .We are glad that you are pleased with your windows and will pass on your comments to Ian and Liam.
Amazing company from start to finish!
Customer Service
Quality
Value
This company fitted my parent's windows 3 years ago and had no problems since and were very happy to recommend them to us. A great company to deal with from start to finish. Patrick who came to measure up and go through options was great. Pressure-free and honest advice and no waffle or fake high quotes, he gave one good price with a few complimentary upgrades too. The booking and office staff were very organised and polite to deal with too and kept us up to date with any changes that came up. The fitters Ian and Liam were fantastic! They turned up on time and very polite and friendly. Talked us through the process and made sure we were comfortable throughout as had a newborn in the house while the work was going on. Their work was perfect, no complaints at all. Very neat and tidy job throughout and they also cleaned up after themselves and made sure to put protective sheeting on everything beforehand. They even fixed a couple other issues not related to the job while they were here as a favour too. Couldn’t recommend this company more. We had all windows and front door replaced and all are perfect. An honest hassle-free company that doesn’t try to pull the wool over your eyes like others have done that have quoted us.
Customer in South Yorkshire Posted on 24/01/2025 , work completed 23/01/2025
The trader replied (on 01/02/2025)
Thank you . We appreciate you taking the time to write this review and glad you are pleased with our work and customer service .
Eco thermal
Customer Service
Quality
Value
From start to finish fantastic, from meeting Joanne in the shop @ Penistone, Patrick coming to price up the job and Ian and Liam fitting the windows and doors . So I would like to say a big thank you to all of them especially Ian and Liam for a very clean and tidy job I really thought we would have to redecorate the whole house after they had removed all the old windows and doors out however you would not know they had even been such a good job. Love our new windows and doors thank you to all at eco thermal .
Customer in South Yorkshire Posted on 29/12/2024 , work completed 18/12/2024
The trader replied (on 01/02/2025)
Thank you for your review. We appreciate your comments and are pleased that you were happy with all the team. We hope we can help you in the future.
Simply Excellent
Customer Service
Quality
Value
Straightforward and simple. Excellent company, product, personel and installation. Full stop. Would well recommend this company to any future potential client.
Which? Trusted Traders Consumer Posted on 18/11/2024 , work completed 01/06/2024
The trader replied (on 01/02/2025)
Thank you for the review and for taking the time to post it .Glad you are pleased with our work .
Quality work
Customer Service
Quality
Value
Ian and Liam did a great job installing the new windows and doors. They were very pleasant, professional and paid attention to detail and finish. They kept us informed about the timing and the installation process and they were efficient, neat and tidy. All the work was done within the expected timescale. There was an issue with two of the glass units, but this was dealt with speedily and Scott came and replaced them. Everyone I have dealt with at Eco Thermal has been friendly and helpful and I'm very happy with the new windows and door. I would definitely recommend the company.
Customer in West Yorkshire Posted on 26/09/2024 , work completed 25/09/2024
The trader replied (on 01/02/2025)
Thank you very much for the review . We are glad that you are pleased with your windows and door and workmanship.
Excellent Work
Customer Service
Quality
Value
Ian and Liam came to replace my windows and doors last week. They made a special effort to complete the work quickly and with minimum disruption. They put down dust sheets, covered the carpets and left everything clean and tidy. The windows and doors look great. Everything was finished off to a really high standard and I had no problems. I would definitely recommend them.
Customer in South Yorkshire Posted on 16/09/2024 , work completed 13/09/2024
The trader replied (on 28/09/2024)
Thank you for your review. We are happy that you are pleased with our products and installation team and hope that we can help you in the future.
Installation of new windows to ground floor.
Customer Service
Quality
Value
New windows were installed through the ground floor, on the date and within the time frame promised. Ian and Liam were a good team, working hard, and well together. Ian’s, as boss, communication with us was excellent, always keeping us in the picture, clarifying any uncertainties and being clear about what preparatory clearing was needed. They always offered to help with moving things. The actual installation of the windows was extremely skilful and resulted in hardly any damage to the rendering or other existing structure. Ian spontaneously very skilfully matched up what little tendering was dislodged with filler that he then roughened to match the rendering. They cleared up fastidiously after themselves and left everything looking good. We are very happy both with them and with their work. Andrew and Jo.
Customer in South Yorkshire Posted on 18/07/2024 , work completed 17/07/2024
The trader replied (on 20/07/2024)
Thank you for the review Andrew and Jo. We appreciate you taking the time to post it and are glad you are happy with our products and installation. We will pass on your comments to Ian and Liam.
Fantastic
Customer Service
Quality
Value
I recently had new windows installed in my home, and I couldn't be happier with the result. The product quality is outstanding, providing excellent insulation and a sleek, modern look that has completely transformed the appearance of my house. The installation process was seamless, thanks to Ian and Liam. Their attention to detail was impeccable. They took great care to ensure that each window was perfectly fitted, with no gaps or imperfections. They were professional, courteous, and efficient, completing the job in a timely manner without cutting any corners. Ian and Liam went above and beyond to ensure that everything was clean and tidy before they left, and they even took the time to explain the features and maintenance of the new windows to me. Their expertise and dedication to their craft truly made a difference. Overall, I highly recommend these new windows. The product is top-notch, and the installation team, Ian and Liam, provided exceptional service. It's rare to find such a combination of quality and professionalism. Thank you for a fantastic experience!
Customer in Lancashire Posted on 09/07/2024 , work completed 28/06/2024
The trader replied (on 21/09/2024)
Thank you for taking the time to post your review. We are pleased that you are happy with our work and products and will pass your comments to the team.
EcoThermal Design Ltd
Customer Service
Quality
Value
I would highly recommend Eco-Thermal Design. They were professional, friendly and very fairly priced. Everything went smoothly and Ian and Liam arrived as agreed, did a great job and cleaned up afterwards.
Customer in South Yorkshire Posted on 14/06/2024 , work completed 14/06/2024
The trader replied (on 24/06/2024)
Thank you very much for the review. We are glad you are pleased with the work.
Excellent workmanship
Customer Service
Quality
Value
Eco thermal designs did an excellent job on fitting our 2 doors today. From start to finish a professional company , we would highly recommend them. Ian and Liam arrived on time and worked tirelessly until they had both doors fitted. A job well done and the doors look wonderful.
Customer in South Yorkshire Posted on 24/05/2024 , work completed 24/05/2024
The trader replied (on 24/06/2024)
Thank you very much, we appreciate you taking the time to post a review.
Great job from Liam and Ian
Customer Service
Quality
Value
Ian and Liam did a great job fitting my new sliding patio doors. They were really efficient, polite and professional. The doors look stunning! Thank you.
Customer in West Yorkshire Posted on 22/05/2024 , work completed 21/05/2024
The trader replied (on 24/06/2024)
Thank you for your review, we are glad you are pleased with the doors. We will pass on your comments to Ian and Liam.
The trader replied (on 24/06/2024)
Thank you for your review, we are glad you are pleased with the doors. We will pass on your comments to Ian and Liam.
Excellent windows and installation
Customer Service
Quality
Value
Thanks to Ian and Liam who were friendly and courteous when fitting our whole home with a new set of windows. Better quality windows and at a good price. Thank you.
Customer in West Yorkshire Posted on 17/05/2024 , work completed 17/05/2024
The trader replied (on 24/06/2024)
We are glad you are pleased with your new windows. Thank you for taking the time to post a review.
Great work, professional, quick and clean
Customer Service
Quality
Value
Had 5 windows fitted over 2 days. Very happy with the result and service. Efficient, professional, tidy and great communication. Would definitely recommend this company.
Customer in South Yorkshire Posted on 24/04/2024 , work completed 09/04/2024
The trader replied (on 24/06/2024)
Thank you, we appreciate you taking the time to post a review and are happy with our work .
Installation of new patio sliding doors
Customer Service
Quality
Value
Every aspect of the contract was carried out to the highest standard. Patrick in sales was excellent to deal with, followed by the installation team of Ian and Liam. Everything was carried out as promised, without us having to do any chasing! ‘They exceeded our expectations’
Customer in South Yorkshire Posted on 20/04/2024 , work completed 05/04/2024
The trader replied (on 24/06/2024)
Thank you for posting a review and are glad you are happy with our team from sales to installation.
Brilliant service
Customer Service
Quality
Value
We have had a total of 14 windows replaced by EcoThermal.Our original windows were hardwood and it is an old house. We replaced 8 of them about 18months ago and were so impressed we have now replaced the remaining 6. The windows supplied were perfect for use in an old building and matched the previous design perfectly. The survey carried out was very thorough and helpful, the price quoted extremely reasonable and we were shown a sample of the materials which were of a very high quality. The date of installation and budget were known from the beginning, the last installers (Ian and Liam) arrived promptly and the work was carried out over two days with no mess and an excellent finish requiring no work on our part. All of the staff involved, from the initial survey, office staff and installers are lovely to deal with. Nothing is too much trouble and they are always available if you have any questions. I would not hesitate to recommend them.
Customer in West Yorkshire Posted on 04/04/2024 , work completed 05/03/2024
The trader replied (on 24/06/2024)
Thank you for posting this review. We appreciate your comments . We try to give customers the best products we can within their budget, and provide a professional service from sales to installation .
New guttering around conservatory - excellent
Customer Service
Quality
Value
The guttering around my conservatory had broken and so we asked Eco Thermal Design to replace it. They have done a very good job, cleaned up after themselves and the workers were pleasant, polite and helpful. Will use again if I need any other work doing.
Customer in South Yorkshire Posted on 14/08/2023 , work completed 10/08/2023
Delighted with my new aluminium sliding patio doors
Customer Service
Quality
Value
The product and installation was 1st class and completed on time by very friendly and tidy chaps with a minimum of disruption. Customer satisfaction is a priority with this company and they are prepared to go the extra mile to meet it. I can't speak highly enough about all the people I came into contact with, all completely genuine, a rare commodity. one hundred percent recommended.
Sue in South Yorkshire Posted on 22/06/2023 , work completed 16/06/2023
Excellent service
Customer Service
Quality
Value
Had a solidor front door fitted yesterday by eco therm. I have to say from beginning to end the service has been outstanding! The sales team helpful, mindful of my budget, not at all pushy, I felt very comfortable with all of them. Everything explained to me clearly including the cooling off period. The installation team were so pleasant, did a great job, efficiently, and left no mess. I feel confident in their after sales service were I to run into any problems. The door itself is simply beautiful, just what I wanted. A five star service and I wouldn’t hesitate to recommend this company where customer satisfaction is there priority
Customer in South Yorkshire Posted on 07/07/2022 , work completed 06/07/2022
Second to none service each and everytime
Customer Service
Quality
Value
Could not be happier with the consistent exemplary service each time I have used eco thermal. I recommend to friends who have also been just as impressed! I look forward to using again in the future.
Holly in West Yorkshire Posted on 01/09/2021 , work completed 24/07/2020
Exceptional service
Customer Service
Quality
Value
I have to say the work Eco-thermal design Ltd carried out was exceptional. From the first meeting to advise and design the door, to getting a NO OBLIGATION quote to the fitting of the new door and window this company stood head over heels above the competition it has an ethos of customer satisfaction first and foremost and in my opinion second to none. I had my single garage door replaced by a new central door and two side panels I also had a window replaced at the same time. I have no hesitation in recommending this company, their work on the day of the installation was done quickly and all the debris and old garage door and window were disposed of by them leaving me nothing to do but admire my new door. I had one small issue that was dealt with straight away so really it wasn’t an issue. I also have to say that all the work was carried out and completed to my satisfaction without a penny changing hands and was only paid for at the time of completion I have never had a company put their trust in the customer like this one did. This company is also recommended by Which
Mrs Theresa Goodwin, South Yorkshire Posted on 27/06/2019 , work completed 10/06/2019