Data privacy

This tool runs entirely on your device. Everything you enter — inputs, calculations and results — stays in this device’s browser storage and is not sent to any server or third party. There is no account, no tracking and no analytics. Nothing is shared unless you choose to share it yourself, for example by sending an email.

Disclaimer & competence

This tool compares the yearly running costs and carbon of heating fuels, as an aid to training and discussion. It is a comparison aid only. It is not a quotation, a bill forecast or a system design, it does not replace a heat loss calculation or system design, and it does not by itself satisfy any MCS, Building Regulations or other regulatory requirement.

Results depend on the information entered and on the published data cited. Prices change, so check them before relying on any result. The user is responsible for checking all inputs and outputs, and for working within their demonstrated scope of competence. To the fullest extent permitted by law, the author accepts no liability for any error, omission, or any direct or indirect loss or damage arising from use of this tool or reliance on its output.

Copyright

© 2026 Easy Heating Engineer. All rights reserved. This tool may not be reproduced, redistributed, or modified without written permission. Sources (Ofgem, DESNZ, MCS, CIBSE, SAP, the Energy Saving Trust and manufacturer data) are cited for reference only.