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Double glazed windows are a primary choice for homeowners looking to improve their home’s energy efficiency and keep their home warmer for longer. It’s a simple concept – two panes of glass instead of one – but it provides a range of benefits including better insulation, security, and reduced noise levels. But how much does it cost to double glaze windows?

In this blog post, we’ll take a closer look at the cost of double-glazed windows and explore whether the investment is worth it.

Double glazing costs:

The cost of double glazing windows varies on a range of different factors, including:

  • Size and type of the windows
  • Complexity of the installation
  • Type of glass (Low-E glass/self-cleaning glass compared to standard glass)
  • Frames (uPVC/aluminium/timber frames)

While the initial cost of double glazing windows may seem high, it’s important to consider the long-term savings that can result from increased energy efficiency.

Are double glazed windows worth the cost?


An initial obstacle for homeowners buying double glazing is the upfront cost, but there are several important factors that make double glazing a worthwhile investment:

  • Energy savings – Double glazing can reduce heat loss from your windows by up to 50%, which can lead to significant savings on energy bills over time.
  • Improved comfort – Double glazing can help to keep your home warmer in the winter and cooler in the summer, making it a more comfortable place to live.
  • Increased home value – Due to the above reasons, double glazing can add value to your home and make it more attractive to potential buyers.

Should I replace my 20 year old double glazed windows?

If your existing double glazing is more than 20 years old, it may be worth considering replacing it with newer, more energy-efficient windows. While this can be an expensive process, the long-term energy savings can make it a worthwhile investment.

Average lifespan of double-glazed windows

The average lifespan of double glazed windows can vary depending on the quality of the materials used and how well they are maintained. However, most double glazed windows are designed to last for at least 20 years – or even longer with proper maintenance and care.

Is it cheaper to replace all my windows at once?

If you’re considering replacing your windows, it may be more cost-effective to replace them all at once rather than doing it piecemeal. This is because many double glazing companies offer discounts for bulk orders, which can help to reduce the overall cost.

Choose The North West’s leading window company

While the cost of double glazing windows can be significant, the long-term energy savings and increased comfort of your home can make it a worthwhile investment. Additionally, replacing old or inefficient double glazing with newer windows can lead to further savings on energy bills over time.

Ultimately, the decision to double glaze your windows comes down to personal preference and financial considerations, but it’s worth considering the potential benefits in the long run.

Our customers are saying great things.

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We have a host of accreditations to our name, including being one of the few approved suppliers of Rockdoor designs and installations in the North West, so you know that when you choose Plan-it Windows, you are making a sound investment in world-class products and services.

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Everything spot on

Built 3 houses, was recommended Plan-it by a friend of the family, gave them a try and will be using them again. No hassle, left them too it, everything spot on. Houses look great.

Mr Hilton - Tong Moor

Really friendly & really efficient

Suffered a burglary and so needed new French doors ASAP, received a flyer through the door the week before which was lucky, gave them a call, really friendly, really efficient and cheap too, they did everything quickly due to my circumstances. First class Plan-it. Thanks guys

Miss McDonald - Darcy Lever

Over the moon with the installation

A friend told me about the service from Plan-it and I give them a ring. They came on time and didn’t take ages, price was really really good and we are over the moon with installation as we was told 3 days and they was done in two. One of best buys I’ve ever made.

Mr Hynes - Bolton

Very thorough & very friendly

Great set of lads, very thorough and very very friendly, straight forward explained everything dead simple, no fancy jargon or strategies, just good customer service and real easy. Windows look great and the bi-fold is amazing.

Mr & Mrs McCormack - Astley Bridge