How Does Our Energy Calculator Work?


At Fitter, we believe that thermal efficiency is one of the most important ways of saving money in your home. With this in mind, we have an energy calculator that will give you an estimate of how much money you can save. As homeowners ourselves, we understand the importance of reducing your energy bills, so in this article, we will take you through our energy calculator in detail while also explaining how upgraded replacement windows save money this winter. Read on to learn more

How Will Our Energy Saving Calculator Help You With Your Windows?

Upon entering the energy calculator, the first thing you have to do is tell us what type of property you live in. The options are as follows: Detached, Semi Detached, Terraced, Bungalow, or Flat. This helps us get an idea of which property you live in, as the calculations differ. 

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Once you have chosen what property you live in, the next step is to calculate the average square metre of your property. For example, if you live in a terraced house, the average square metre is 492 , but there is a slider option if it is larger or smaller. This will help calculate the cost more easily. 

Next, it is important to decide what the current window system is. We give customers the choice of six options, which are Wood, PVC, and aluminium, each in single or double glazing. If you have a home with double glazing, this will trap heat better than single glazing, so it’s likely that you will save more money on your energy bills long term. Next, find out what the main source of heating is. Choose from Gas, Electricity, Heating Oil, or House Coal.

There are significant differences in how much you save, depending on what material your windows are made from. If you have an aluminium window with triple glazing installed, the breakdown in costs shows that you will save around £48,0000 on your energy bills. In comparison, a uPVC window that is fitted with double glazing will save you around £42,000 a year on energy bills. The energy chart breaks things down over 5 years based on assumptions of how low your U values are. It is a rough estimate that helps give homeowners a clear idea of how much they could be saving. With the cold weather and rising energy prices affecting homeowners, it is important to get an idea to see how much you can save. 

Why Should You Replace Your Windows 

At Fitter, we believe there are many advantages to replacing your windows. They will give it a brand new lease of life, ensuring you will get a design that is right for your needs. Furthermore, a new window will prevent draughts in your home. If you can feel a cold draught coming into your home, this will affect the comfort of your home. Thankfully, an upgraded window comes with double glazing as standard, resulting in fantastic heat retention. The glazing is fitted flush within the frame, trapping warm air inside and leaving cold air out. As a result, you will save money on your energy bills, so you don’t have to use the central heating as much. 

A new window will let in natural light, which keeps your home warm and ensure you live in a brighter living space. This leads to a warmer and cosy space this winter when energy prices are rising. It creates the illusion of a larger area, making every room comfortable, 

Low Maintenance 

Choosing a new window is easier to maintain. With many options such as casement windows and tilt and turn, they are mostly maintenance free. Simply wipe the window with a cloth and soapy water, and it will look as good as new for longer. Save on the hassle when you get a brand new window. 

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Increased Security 

One of the unexpected benefits of replacing your windows is the extra security. Modern windows come with advanced double glazing and built in locking systems, which will help keep intruders away. What’s more, the double glazing has better functionality than older windows, so they won’t crack warp or fade in tough winds. Feel assured that you will be kept safe for decades. 

Noise Reduction 

A new window is soundproof which is ideal if you live in a loud and busy neighbourhood. This will reduce loud sounds to a whisper, allowing you to focus clearly, especially if you have a work from home job. Enjoy peace and quiet with your brand new windows. 


We hope that this article has helped you understand how our Energy Saving Cost Calculator works. It is a simple and effective way to calculate how much you are saving on your energy bills. 

To create a brand new window, start an online quote. It is simple and easy to use. Build your dream window and we will get back to you with a price that suits your budget.

If you want to learn more, get in touch with our friendly team today. Call us on 01279 799818 or fill our online contact form out. We will get back to you as soon as we can.

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