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Synergy Windows & Conservatories Fabricators & Installers of Doors Windows & Bespoke Conservatories. We can't be beaten on price & quality as we manufacture install and fit, and have no salesmen's commissions, so you pay for the product and nothing else.
Served areas
  • North East
Services
Synergy Windows & Conservatories
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We install windows, doors, conservatories, orangeries, and house extensions across Darlington, Harrogate, Ripon, Northallerton, Stokesley, Yarm and surrounding areas. Choosing the right home improvement company for quality conservatories, orangeries, windows and doors is one of the most important decisions you'll make when thinking about improving your home.
Aluminium Windows
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We install aluminium windows across Darlington, Harrogate, Ripon, Northallerton, Stokesley, Yarm, and surrounding areas. Aluminium windows are perfect for homeowners who want a window with high performance and low maintenance at an affordable cost. A naturally durable material, aluminium windows will never rot, rust, peel or flake, all whilst improving the warmth and energy efficiency of your home.
UPVC Casement Windows
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We install uPVC casement windows across Darlington, Harrogate, Ripon, Northallerton, Stokesley, Yarm, and surrounding areas. Casement windows represent great long lasting value for the home. Virtually maintenance free, quiet and extremely secure (most casement windows come with Secured by Design certification), you can rest assured that you'll be bringing a fantastic new addition to your home that excels in keeping you warm, safe and comfortable throughout the year.
Reviews (11)
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Gareth Robson
Sep 21, 2021
Great service and communication from start to finish. Excellent work quality. All the tradespeople who worked on our supalite roof installation were brilliant and couldn't have been more helpful.
Zoe Barron
May 05, 2021
I asked Synergy to undertake remedial work as the job had been left unfinished by another window company. Synergy's service was superb from the initial assessment to scheduling the work to the great team on the day. I now have windows that work, no longer whistle and have had the best night's sleep in over 2 years! Thank you. 100% recommend.
Clare Norris
Apr 06, 2021
Bad experience from start to finish. We have been left with doors which were the wrong size and are not air or water tight. We've had other contractors to fix some of the problems they caused but may need to have the doors refitted. Do not recommend at all. Go elsewhere.
Jim Chapman
Jan 02, 2021
We had excellent service from Synergy from the initial consultation through to the installation. We didn't feel rushed or under pressure to make a decision, but were left with enough information to make up our own minds on what we wanted from the type of bi-fold doors through to the design of the detailed stuff like handles etc. The installation was seamless too. The installers arrived on time, completed their work (which was exemplary), tidied up and left. Simple.
Janet Cumiskey
Dec 23, 2020
Windows are great very pleased. Returning customer now had conservatory replaced by Synergy, absolutely delighted with the result. Excellent careful workmanship. I would add a photo if that was possible my conservatory is so nice Thank you Janet Cumiskey
Raj Lodh
Dec 14, 2020
Really disappointing experience so far (still awaiting completion). The delays in getting hold of materials I completely understand because of the current situation, however I cannot excuse a window being "the wrong shape" (and therefore they had to reorder again) and bathroom windows being supplied without the ordered privacy glass (again needing this to be reordered).

Nor can I excuse the constant false promises made by the manager regarding when the fitters would come (only to be changed on the day or day before). The guys who fit the products (contractors) are actually good and hardworking. The products themselves are really nice.
Claire Martin
Dec 10, 2019
Great service every time Reasonable prices Friendly service Thank you
Hazel Smith
Nov 26, 2019
Customer service is quick and easy. They install fantastic products. Would recommend to all!
Roy Million
Mar 19, 2018
After a lot of problems with a door, common sense prevailed, it's been a long time in sorting out the problem but finely we are there, thanks to Steve ( the owner)
Evelyn Schofield
Jun 29, 2017
Lovely windows, look really good and they seem to be excellent quality. The fitters were the best, would have Synergy Windows again and recommend to everyone.
Mashud
Jan 19, 2017
Great service and fantastic high quality windows. Thanks for all your help guys. I will certainly recommend you to family and friends!