# Commercial Gas Calculator

> Utilities

Canonical page: [https://chrome-stats.com/d/id997737518](https://chrome-stats.com/d/id997737518)

## Overview

- **ID:** `id997737518`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Oliver Shingler
- **Category:** Utilities
- **Version:** 1.3.3
- **Last updated:** 2025-12-16
- **First published:** 2015-06-06
- **Size:** 1.64 MB
- **Data as of:** 2026-09-18
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/commercial-gas-calculator/id997737518)
- **Privacy policy:** [https://www.speaktothegeek.co.uk/privacy](https://www.speaktothegeek.co.uk/privacy)

## Description

This quick and simple-to-use app will assist gas engineers in calculating the maximum time required to purge air from a non-domestic natural gas installation, allowing the appliances to fire correctly.

Suitable for natural gas (NG) installations only, with an installation volume not exceeding 1m³, and a maximum operating pressure (MOP) not exceeding 40mbar at the outlet of the primary meter regulator. Calculations are performed in accordance with IGE/UP/1A and are intended to help you double-check your own calculations.

If you also require the tightness testing duration (TTD) for the system, the option to calculate this is available to purchase in-app.

For the busy multi-client gas professional, there's an option to purchase a Save Installations add-on allowing you to save and retrieve installation layouts for future reference.

## Rankings

- #1,615,189 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id997737518)