Commercial Gas Toolkit

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Everyone
50+
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Everyone
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About this app

Commercial Gas Toolkit is a professional calculation and reporting app built by a UK Gas Safe engineer, for commercial gas engineers.

Designed for real site use, the app replaces manual paperwork with fast, accurate calculations and clear professional reports — without guesswork.

🔧 Core calculation tools

• Installation Volume (IV) calculation
Accurately calculate total installation volume for commercial and industrial gas pipework.

• Strength testing calculations (guided test)
Calculate required test pressures and durations, with a guided strength test workflow to help you follow the correct testing sequence on site.

• Tightness test duration (guided test)
Calculate tightness test times quickly and consistently, with a guided tightness test that walks you through the process step-by-step.

• Purge volume and purge time calculation (guided test)
Calculate required purge volumes and purge durations, with a guided purge workflow to support safe commissioning and recommissioning.

• Gas rate calculation
Fast gas rate calculations to support appliance input verification.

• Ventilation calculation
Calculate minimum ventilation requirements for commercial boiler rooms and plant spaces.

All calculations and guided workflows have been cross-checked against traditional manual methods and verified by working commercial gas engineers.

📄 Professional PDF reports
Generate clean, consistent PDF reports directly from your calculations:

• Add your company logo

• Customise header colours to match your branding

• Clear layout suitable for clients and site records

• Share PDFs via email, WhatsApp or cloud storage

Important:
PDFs generated by this app are calculation records only.
They are not certificates and do not replace CP12, CP16, CP17 or any other statutory documentation.

🧰 Built for site work
• Guided test workflows for strength, tightness and purge
• Fast input with clear outputs
• Pass / fail logic where applicable
• Calculation history saved on device
• Works offline
• No adverts
• Designed for professional daily use on site

👷 Who this app is for
• Commercial Gas Engineers
• Industrial Gas Engineers
• Heating & Mechanical Contractors
• Engineers carrying out testing, commissioning and servicing

⚠️ Professional responsibility
This app is a calculation and guidance aid only.
Users remain responsible for:
• Correct data input
• On-site testing procedures
• Compliance with Gas Safe registration
• Adherence to current UK standards and regulations
Updated on
May 18, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Content rating
Everyone
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App support

About the developer
Joseph Steven O'Sullivan
Stargastechnologies@gmail.com
32 Standingford HARLOW CM19 5SN United Kingdom