How do I choose a uPVC window? Plus, the most well-known manufacturers and suppliers!

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If you are considering buying replacement uPVC windows, then having insider expert knowledge – such as the knowledge we are about to share with you – will help you decide what windows to buy, and which supplier is best for you.

When choosing a uPVC window, here are a few things that you should look out for:

Glazing options

Some manufacturers offer either double-glazing or triple-glazing with their uPVC windows. Either option is very energy efficient, and could save you up to £120 a year on your energy bills! Either glazing option proves very cost-effective in the long run.

Window Energy Rating

The first thing that we would recommend looking out for is the colourful Window Energy Rating (WER) label, which is an easy way to see how different products compare when it comes to energy efficiency.

This WER label uses a traffic light colour code from A++ to E based on total energy efficiency, where an A++ rated window is the most energy-efficient and E is the least energy efficient.

You will find the window rating at the top of the label using a letter and associated colour band.

Please do bear in mind that the amount of potential energy only provides an indication of the level of efficiency offered by the window itself. The amount of potential energy saved once the window is installed will depend on a number of external factors such as the location of the window, the efficiency of your heating system and other factors.

Window guarantee

Generally speaking, the longer the guarantee, the more confidence the manufacturer has in their product. If you are asked to make a deposit on order, then we recommend only doing so if the manufacturer offers an insurance backed warranty. This will make sure that your money is safe and sound.

Window furniture

Have a look and see what window furniture, or window hardware, is fitted to your uPVC windows. Some manufacturers offer a separate clause for the hardware of your window, so this is something to bear in mind.

Window furniture checklist:

  • The handles on your uPVC windows should be fitted securely and not wobble
  • The hinges should be robust and feature stainless steel screws
  • The interlockers – the small blocks that are angled and fitted in a few points around the inner frame – should be fitted securely and not wobble
  • The multi-point locking system should be fitted and secured.

How do I choose a uPVC window? Plus, the most well-known manufacturers and suppliers!

Well-known windows manufacturers and suppliers

Now that we’ve covered some of the main ways to choose a uPVC window let’s share some essential information on the most well-known windows manufacturers and suppliers out there.

Anglian Home Improvements

Anglian Home Improvements is one of the UK’s most popular manufacturers and approved installers of double-glazing windows, doors, and conservatories. Made in Britain, uPVC windows from Anglian are available in a large range of colours and finishes. What’s even better is that you can choose from A or A+ double glazed uPVC windows, or upgrade to A++ triple glazing.


Britelite has been fitting quality windows, doors and conservatories in Kent, Sussex, Surrey and London for over 45 years. Offering uPVC windows in three different window styles – casement, sliding sash, and traditional Residence 9 – uPVC windows from Britelite will look great and can be customised to suit your home’s individual style.


Safestyle is the UK’s number one for replacement energy-efficient windows and doors across England and Wales. You are in safe hands with Safestyle. Offering uPVC windows in three different window styles – casement windows, sash windows, and tilt and turn windows – uPVC windows from Safestyle will help to improve the energy efficiency and security of your home.


Everest is a national company with a local presence. Everest provides a bespoke service, working with you to create stylish products to improve your home. Offering uPVC windows in three different styles – casement windows, sash windows and tilt and turn windows, each window from Everest is complete with advanced Yale locking technology, keeping your home safe and secure.

Compare double glazing costs with Compare Companies

uPVC windows are one of the most common types of frames in the UK. We believe there are 10 advantages of uPVC windows including enhancing your home’s aesthetics and improving your home’s energy-efficiency. Available in a wide range of sizes, shapes, and colours, we are confident that we can find a uPVC window for you.

To get started simply compare double glazed window costs, or alternatively, contact us and we will get back to you.

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