How Much Could You Save With New Windows?

How Much Could You Save With New Windows?

5 September 2026 News

With household energy bills remaining an important consideration for homeowners, improving your home’s energy efficiency could be a worthwhile investment. One of the areas that can make a difference is your windows.

At Nolan uPVC, we supply and install energy-efficient windows across South, West and Mid Wales. Modern double and triple glazing can help reduce heat loss, improve comfort and potentially reduce the amount of energy your home needs for heating.

But the big question is: how much could you actually save with new windows?

The answer depends on your home, your existing glazing and your heating system. Rather than relying on a generic figure, Nolan’s Energy Savings Calculator allows you to explore potential savings based on different household and property types, including your specific heating type.

How Much Could You Save?

There isn’t one saving figure that applies to every home.

For example, replacing old single-glazed windows is likely to have a different impact from upgrading relatively modern double glazing. The size and type of your property, the number of windows you replace and the way you heat your home can all affect your potential savings.

Rather than promising a specific £ figure without knowing your property, Nolan’s calculator gives you a more personalised estimate.

It can help you see the potential difference that upgrading to energy-efficient double or triple glazing could make to your energy bills.

What Can Affect Your Potential Savings?

Your potential savings can depend on:

  • Whether you currently have single or double glazing
  • The age and condition of your existing windows
  • The size and type of your property
  • The number of windows being replaced
  • Your heating system
  • The specification of your new windows
  • How much energy your household currently uses

This is why it’s difficult to give every homeowner the same savings estimate.

Energy calculator

Why Can New Windows Reduce Energy Bills?

Older windows can allow more heat to escape from your home. This means your heating system may need to work harder and for longer to maintain a comfortable temperature.

Modern double glazing creates an insulating barrier between your home and the outside. Nolan’s windows use contemporary glazing technology designed to improve thermal performance and help retain heat.

By reducing heat loss, energy-efficient windows can potentially reduce the amount of energy required to heat your home.

Nolan has previously highlighted that windows can account for a significant proportion of heat loss in a property, making them an important consideration when looking to improve energy efficiency.

What If I Already Have Double Glazing?

You don’t necessarily need single-glazed windows to benefit from an upgrade.

If your existing double glazing is several decades old, modern replacement windows can offer improved thermal performance compared with older installations.

Today’s windows can incorporate improved frames, glazing, seals and other features designed to reduce heat transfer.

If you’re unsure whether your existing windows are still performing effectively, look out for signs such as:

  • Draughts around the frames
  • Cold spots near windows
  • Condensation between panes
  • Damaged or deteriorating seals
  • Difficulty opening or closing windows
  • Noticeably higher heating requirements

If you’re experiencing several of these issues, it could be worth having your windows assessed.

sliding sash windows quote cardigan

Could Triple Glazing Save You More?

For homeowners looking for enhanced thermal performance, triple glazing is another option.

Triple glazing uses three panes of glass rather than two, creating an additional insulating barrier. The result can be improved heat retention and reduced heat transfer compared with traditional double glazing.

Nolan offers both double and triple glazing options, allowing homeowners to choose a specification based on their property, requirements and budget.

However, triple glazing isn’t automatically the right choice for every property. The best option depends on your existing windows, the construction of your home and the level of performance you’re looking to achieve.

The Benefits Go Beyond Energy Savings

Saving money on your energy bills isn’t the only reason to consider new windows.

A Warmer, More Comfortable Home

Modern energy-efficient windows can help reduce draughts and cold spots, helping your home maintain a more consistent temperature.

Reduced Outside Noise

Double and triple glazing can also help reduce external noise. Triple glazing, in particular, can provide additional sound reduction thanks to its extra pane and insulating gap.

A Fresh New Look

Replacing your windows can completely change the appearance of your property. Nolan offers a wide range of styles, including uPVC casement windows, flush casements, sliding sash, bow and bay, tilt and turn and fully reversible windows.

Long-Term Investment

Modern windows are designed to provide long-lasting performance, meaning the benefits of an upgrade can extend well beyond your immediate energy savings.

How Can You Find Out How Much You Could Save?

The easiest way to get an idea of your potential savings is to use Nolan’s online calculator.

Try the Nolan Energy Savings Calculator

The Nolan Energy Savings Calculator is free to use and can provide results based on different property and household types, as well as your heating system.

Instead of relying on a broad estimate such as “£100–£500 a year”, you can see a figure that’s more relevant to your individual circumstances.

Your home is unique, so your potential savings are too.

Why Choose Nolan uPVC?

At Nolan uPVC, we’re a manufacturer and installer based in Carmarthen, with more than 37 years of experience supplying windows, doors and other home improvement products to customers across South, West and Mid Wales.

We offer a wide range of uPVC and aluminium windows, along with double and triple glazing options, so you can choose a solution that suits your home’s style and performance requirements.

Whether you’re replacing a few tired windows or planning a complete upgrade, our team can help you understand your options.

Ready to Find Out How Much You Could Save?

If your windows are old, draughty or no longer providing the comfort and performance you need, now could be the perfect time to explore your options.

Don’t guess how much you could save – find out.

Use Nolan’s Energy Savings Calculator to see the potential savings from upgrading your glazing.

Ready to take the next step?

Get a free quote from Nolan uPVC or contact our friendly team to discuss your requirements.

Nolan uPVC – helping homeowners across South, West and Mid Wales create warmer, more comfortable and energy-efficient homes.

Jason James
More from us

Related News

Finance Options

Looking to spread the cost? View our finance options

Finance Options
Book Appointment Get a Quote