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Christmas Closure: We close at 3pm on Thursday 21st December and re-open Tuesday 2nd January at 8am.

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10 Year Guarantee

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Made in the UK

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1000+ Checkatrade Reviews

Choose from our wide range of energy-efficient windows and doors, with the choice of uPVC, Aluminium or timber double glazing that all offer improved energy performance. You wouldn’t choose white goods such as fridges and dishwashers that aren’t energy efficient so nor should you with your windows and doors. Always look out for the ‘Window Energy Rating’ label that will look similar to these other electrical appliances. Ratings start from a ‘G’ (for poor energy performance) through to the best performing ‘A’ rated energy windows.

What makes our double glazing ‘A-rated’?

All of our uPVC double-glazed windows are A-rated – meaning they have superior thermal performance as standard and are the highest energy-efficient rating available. We ensure we use the best materials on the market for our double glazing, including industry-leading Pilkington glass. Our energy-saving UPVC windows are multi-chambered, and our aluminium frames have thermal breaks to conserve heat, while our timber frames insulate naturally. So no matter what your choice of window is, you can be confident that we’re providing an energy-efficient solution.

Get 40% more energy efficient with triple glazing

We are also proud to offer triple glazing as an option with all of our windows. Triple-glazed windows are 40% more effective than A-rated double-glazing so if you choose triple glazing for your replacement windows, you will be getting a fantastic level of energy efficiency.

How do you measure the energy efficiency of a window?

A number of different factors will contribute to the energy efficiency of a window. At Three Counties we use Pilkington glass as standard because we know that we are using a trusted product that will improve the efficiency of your home.

The Window Energy Rating (WER) ranges from G to A and more people are now looking for A-rated efficiency when choosing their replacement windows. Factors that are taken into consideration include the total solar transmittance, how much air can pass through the window seals and how well heat is retained by the glass – all these factors combined will contribute to the window’s overall rating.

What next?

To find out more about our replacement window options and their energy efficiency you can visit our Camberley showroom to speak to one of our experts. Alternatively, we can arrange for one of our team to visit your home with a range of samples to give you a no-obligation quote and free advice. We have been fitting replacement windows in Surrey, Berkshire and Hampshire for almost 10 years and are the experts when it comes to replacement windows in your local area. Call our team or email today and we will be delighted to help you take the first step in improving the energy efficiency of your home.

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Paul Wallis
Paul Wallis
We recently decided to replace our front door, and could not be happier with the result! Thanks so much to Kate, for her time and understanding. Cannot say enough good things about the installation, and Cameron was tidy and efficient. It's been a pleasure to work with Three Counties recently, doors and windows. Many thanks!
Danielle Horsley
Danielle Horsley
Lovely looking door
Agatha W
Agatha W
Three Counties have been superb, their customer service is great and their workman were polite, cleaned up after themselves and the workmanship is excellent!! I am very pleased with their work and would happily recommend them.
Tom Winter
Tom Winter
Excellent service!! We had 21 windows and 3 doors installed and very happy with it all. The process from start to finish was stress free and Ron and Lee who installed the windows and doors were great. Would definitely recommend!
Phil Redhead
Phil Redhead
Just had my tatty old windows replaced by Three Counties, and it’s been a highly professional job from start to finish. Communication from the administration team was prompt and courteous at all times, and installation ended up being much quicker than advertised projections. Installation was without issue and the lads who did the work were amenable to my requirements and did an excellent job. Very happy with the entire process. Three Counties were recommended to me by friends and I can certainly now recommend them to others.
Mark Boyce
Mark Boyce
Bought two new windows and a new front door from Three Counties, was very impressed with the attitude of all staff, who were friendly and informative. Price was good, and installation completed without a hitch - very happy with the final product, and would definitely use again.
Paul Picknett
Paul Picknett
We have just had all our windows (18) replaced, french doors (20 and side panels (2) by Three Counties. We could not be more pleased with their workmanship and the finished product. They left the property incredibly clean after each day, and this despite the messy nature of ripping out old windows and frames. We were kept informed at each stage and a minor snagging issue was resolved promptly and efficiently after installation. A first class service. We would not hesitate to recommend Three Counties.
Anna Trevelyan
Anna Trevelyan
Three Counties have now installed several windows and doors on our house and they're always my go-to company. I used another before I discovered them and they let me down, but I absolutely cannot fault Three Counties. From the moment you contact them they're courteous and professional, and they keep in touch with timescales and installation times. Friendly installers too, who go above and beyond. You'd think all this great service would cost more but they beat other companies on price. Highly recommended and trusted, I'd never go anywhere else now.