Excellent Double Glazing for Northallerton Homes

Choosing the right company to install your new conservatory, orangery, windows or doors is a very important decision you’ll make when deciding to improve your Northallerton home. Affordability is not the only factor to consider when purchasing a new double glazing product. The quality of the materials and products, the experience of the professional installation teams and creating an investment for your home should all come into consideration. Synergy Windows & Conservatories have the knowledge and craftsmanship to deliver the first time, every time. We understand what it takes to do the job properly, giving you a local company with expertise that you can trust. Our double glazing benefits also extends to the Residence Collection too!

What we do

Quality Products

Our range of double glazing products are manufactured with only premium grade materials and the latest techniques to offer a modern standard to enhance your Northallerton home.


We appreciate the importance of value for money when improving your Northallerton home. Our double glazing is competitively priced, allowing you to make a long term investment into your Northallerton home.


Our vast knowledge of the home improvement industry makes us the ideal choice for homeowners in Northallerton. You can relax when you choose Synergy.

Our Products

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Happy Customers' Testimonials

Synergy's service was superb from the initial assessment to scheduling the work to the great team on the day
Zoe Barron - May 2021
Thank you, Synergy! Highly recommend this company!
Frank Sunderland - April 2021
Synergy's service was superb from the initial assessment to scheduling the work to the great team on the day
Jim Chapman - September 2020
Windows are great very pleased. Returning customer now had conservatory replaced by Synergy, absolutely delighted with the result. Excellent careful workmanship.
Janet Cumiskey - September 2020
Synergy understand the requirements for customer service excellence. Many thanks for everything.
Claire and Jerry Watson - County Durham
Overal, we are very pleased with the service provided by Synergy. The work has been finished to a very high standard.
Mr T Dargan - Sunderland
Good job, nice firm to deal and pleased with the finish.
Mr B Milton - Durham
This company really cares, nothing was too much trouble and everything was done exactly as promised.
Darren Stubbs - Darlington
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Synergy Windows & Conservatories Supply and Fit Double Glazed Windows, Conservatories & Doors in Northallerton, Harrogate, Darlington, Durham, North Yorkshire and the North East

We have carried out hundreds of home improvement projects throughout Northallerton, North Yorkshire and the North East offering a range of double glazed windows, sash windows, doors, conservatories and more which are all manufactured in our Darlington workshop to our usual exceptionally high standard.

If you’ve seen a product you like, then why not contact our team today. You can call us on 01423 224280 or fill out our online contact form.

For those that already know what double glazing product they need to improve their Northallerton home, then why not start an online quote? This will give you a bespoke estimate of your product with no obligation to book.

Double Glazing Northallerton

Double Glazing Northallerton



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