• Conservatory Range


    A conservatory is a cost effective and enjoyable way to add light and space to your home.

  • Windows


    Windows do more than let light into your house; the shape and style can make a huge difference

  • Doors


    Choosing your door and having it fitted could not be easier with our friendly staff

  • Roofline


    Protect your roof and your most valuable asset, your home. fitted by our professional team.

  • Extensions


    We manage the project from start to finish, including insulation and any plumbing or electrical work.

  • Commercial Contracting


    Construction, maintenance and repair of commercial buildings, such as offices, warehouses and schools

  • Showcase


    See examples of previous projects by Synergy windows.

Synergy Windows are a leading manufacturer and installer of superior uPVC double glazing products throughout Darlington, Harrogate, Durham and North Yorkshire. When you are looking for new UPVC double glazing windows and doors or to add a conservatory to your home, there can be no better choice than Synergy Double Glazed Windows, Doors and Conservatories.

Free Quotation

Want a free no-obligation online Double Glazing quotation. Call Synergy Windows today

Arrange a Home Quote

Call us today and we can arange to visit you in the comfort of your own home

Get your Free Brochure

Call us or email Synergy and we'll send you our latest brochure for free!