What this app is

Easy Gas Engineer is a suite of offline tools to help Gas Safe registered engineers produce calculations, records and notices. Tap a tile on the home screen to open a tool. Each tool has its own built-in guide — tap the ? button inside any tool to open it.

Tools included

Test & Purge — tightness testing and purging calculations to IGEM/UP/1B Edition 4.
Gas Rate — gas rate and heat input calculator for natural gas and LPG.
Service Record — gas appliance service and maintenance record.
Landlord's Record — landlord gas safety record (GSIUR 1998 Reg. 36).
Warning Notice — unsafe situations notice per IGEM/G/11 GIUSP.

Data Privacy

All information entered in any tool remains solely on your device and is not sent to any server or third party. Auto-save uses your browser's local storage. Nothing is shared unless you choose to send a saved PDF yourself.

Data Backup

Your data lives only on this device. To protect against device loss, you can export all saved data as a single JSON file, and import it back later or onto another device.

Export all data — Download backup file

Import data — Restore from backup file

Note: Importing will overwrite any existing data in the tools with the same keys. The backup file is a plain text JSON file — you can store it in cloud storage, email it to yourself, or keep it on a USB stick.

Disclaimer

These tools are provided as an aid to assist competent persons in producing records, calculations, and notices for domestic gas installations. They do not replace professional judgement or formal certification. Users are responsible for verifying all calculations and for compliance with the Gas Safety (Installation and Use) Regulations 1998 (as amended) and all other applicable legislation and standards. 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 these tools or reliance on their output.

References

Gas Safety (Installation and Use) Regulations 1998 (as amended)
IGEM/UP/1B Edition 4
Gas Industry Unsafe Situations Procedure (IGEM/G/11)
Gas Safe TB 112
Gas Installation Technology, 3rd Edition by Andrew S. Burcham, Stephen J. Denney, and Roy D. Treloar, © John Wiley & Sons, Ltd.

Copyright

© 2026 Stephen J. Denney. App design, code, and original content all rights reserved.

Incorporates material from Gas Installation Technology, 3rd Edition by Andrew S. Burcham, Stephen J. Denney, and Roy D. Treloar, © John Wiley & Sons, Ltd.

Provided as a teaching resource for Gas Safe registered engineers. Not for reproduction, redistribution, or public use without written permission.

Engineers must verify all values and procedures against current standards and manufacturer instructions.

Version

Build 2026-08-12