App Description

ACS certificate is required to join the ‘Gas Safe Register’

Core Domestics Gas Safety App CCN1 will help beginners and re-assessments for experienced gas installers that need to keep their ACS qualifications up to date.

-The App contains hundreds of multiple choice questions similar to what you will find in the real world ACS exams.

-Practice as many times as required with no internet connection required after initial install.

-Works on both iPhone and iPad, install on both devices at no extra cost.
The Core Domestic Gas Safety (CCN1) app includes CPA1 (Combustion Performance Analysis)

The Exam content covers

-Gas safety, legislation and standards
-Gas Rates
-Tightness testing and purging
-Installation of pipework and fittings (pipework within meter -installation and outlet pipework)
-Gas emergency
- Gas Characteristics
-Products and characteristics of combustion
-Ventilation
- Fluing Standards
-Gas Controls
-CPA1
-Re-establish existing gas supply and re-light appliances


This product is not affiliated with nor endorsed by the ACS.

iPhone Screenshots

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Core Domestic Gas Safety CCN1 screenshot 1 Core Domestic Gas Safety CCN1 screenshot 2 Core Domestic Gas Safety CCN1 screenshot 3 Core Domestic Gas Safety CCN1 screenshot 4 Core Domestic Gas Safety CCN1 screenshot 5

iPad Screenshots

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Core Domestic Gas Safety CCN1 screenshot 6 Core Domestic Gas Safety CCN1 screenshot 7 Core Domestic Gas Safety CCN1 screenshot 8 Core Domestic Gas Safety CCN1 screenshot 9 Core Domestic Gas Safety CCN1 screenshot 10

App Changes

  • July 14, 2020 Initial release