Energy Effecient Windows & Doors Bracknell, Wokingham and Camberly
Energy Calculator
Lower Energy Bills | Keep Your Home Warm | Help The Environment
Make your Home More Energy-Efficient
Want to lower your energy bills?
With ‘Choices’ energy-saving windows, you may be able to cut heat loss by as much as 40%. Calculate how much you could save with our Online Energy Calculator.
Advanced Technology for a Greener Future
At Autumn Home Improvements, we provide and install 'Choices' windows by CWG – a company with a reputation for blending innovation with sustainability. Their doors and windows are engineered with the newest energy-saving technologies, enabling you to make your house more efficient and environmentally friendly.
We're committed to supporting eco-friendly living and doing our part in lowering carbon emissions.
Calculate your savings
Discover how much carbon and energy you could save using our Energy Efficiency Calculator. Work with Autumn Home Improvements and make a start in cutting your usage today.
Calculate your savings
Discover how much carbon and energy you could save using our Energy Efficiency Calculator. Work with Autumn Home Improvements and make a start in cutting your usage today.
How do we calculate the energy savings in Yearly kWh?
We start by calculating your energy consumption in relation to your current windows and selected region. Using this equation:
(U-Value of current windows x Glass area of home) x Entire year's recorded degree days for selected region x (24/1000) = Current energy consumption
We calculate your energy consumption in relation to the selected CWG windows and selected region. Using this equation:
(U-Value of new 'Choices' windows x Glass area of home) x Entire year's recorded degree days for selected region x (24/1000) = New energy consumption
To get the total savings, we calculate the difference between the new energy consumption and the old energy consumption, Using the following equation:
Current energy consumption - New energy consumption = Total energy savings*
*Please note, we are only calculating the difference in energy consumption between your current windows and CWG windows, the energy efficiency of your entire home is not required.
*How do we calculate the yearly CO2 Savings?
Because we know the energy savings, we can multiply the energy savings by the amount of C02 in kg created per kWh. Using this equation:
Total energy savings x kg of CO2 generated per kWh = Total kg of CO2 savings in kg
**How do we calculate Savings?
Financial Savings are calculated by multiplying the kWk Savings by £0.34 per kWh, as published by the Energy Price Guarantee From 1 October 2022.
Sources:
Degree Days for selected UK region are for the year 2022 and based on a 15.5 Deg internal temperature. The Degree days data source can be viewed online https://www.enmanreg.org/freedd/uk-degree-day-data/
The function we used for calculating energy energy consumption can be found a https://www.open.edu/openlearn/nature-environment/energy-buildings/content-section-2.4.2
Data for average amount of CO2 in Kg created per kWh for 2024 in the UK can be found here https://www.nowtricity.com/country/united-kingdom/
Autumn Home Improvements reserves the right for errors in weather data.
