# ACS CCN1 - Core Domestic Gas Safety — Practice Test Geeks
# https://practicetestgeeks.com/llms/acs-ccn1-gas-safety.txt
# Updated: 2026-05-27

> Free ACS CCN1 - Core Domestic Gas Safety practice tests and study guides. Language: English. Region: UK.

## Overview

- **Category**: ACS CCN1 - Core Domestic Gas Safety
- **Main page**: https://practicetestgeeks.com/acs-ccn1-practice-test
- **Language**: English | **Region**: UK
- **Practice tests**: 24 tests, 144 questions total
- **Exam simulation**: Full-length 45-question timed exam (90 min, 80% pass mark)
- **Study guides / articles**: 2 published

## Exam Simulations (Full-Length, Timed, Scored)

Simulates real exam conditions: question count, time limit, passing score, domain weighting.

- [ACS CCN1 Core Domestic Gas Safety Assessment](https://practicetestgeeks.com/ccn1/exam) — 45 questions, 90 min, 80% pass
  The ACS CCN1 is the UK's core domestic gas safety certification required for Gas Safe Register membership. It covers gas legislation, combustion, vent

## Practice Tests (24 available)

- [CCN1 Gas Safety Regulations and Legislation](https://practicetestgeeks.com/ccn1-gas-safety-regulations-and-legislation-practice-test) (6 questions)
- [CCN1 Gas Safety Regulations and Legislation 2](https://practicetestgeeks.com/ccn1-gas-safety-regulations-and-legislation-2-practice-test) (6 questions)
- [CCN1 Combustion and Ventilation 2](https://practicetestgeeks.com/ccn1-combustion-and-ventilation-2-practice-test) (6 questions)
- [CCN1 Pipework and Fittings](https://practicetestgeeks.com/ccn1-pipework-and-fittings-practice-test) (6 questions)
- [CCN1 Pipework and Fittings 2](https://practicetestgeeks.com/ccn1-pipework-and-fittings-2-practice-test) (6 questions)
- [CCN1 Unsafe Situations Procedure (RIDDOR)](https://practicetestgeeks.com/ccn1-unsafe-situations-procedure-riddor-practice-test) (6 questions)
- [CCN1 Unsafe Situations Procedure (RIDDOR) 2](https://practicetestgeeks.com/ccn1-unsafe-situations-procedure-riddor-2-practice-test) (6 questions)
- [CCN1 Flue Systems and Chimneys](https://practicetestgeeks.com/ccn1-flue-systems-and-chimneys-practice-test) (6 questions)
- [CCN1 Meter and Controls 2](https://practicetestgeeks.com/ccn1-meter-and-controls-2-practice-test) (6 questions)
- [CCN1 Combustion Principles & Flue Systems](https://practicetestgeeks.com/ccn1-combustion-principles-flue-systems-practice-test) (6 questions)
- [CCN1 Combustion Principles & Flue Systems 2](https://practicetestgeeks.com/ccn1-combustion-principles-flue-systems-2-practice-test) (6 questions)
- [CCN1 Combustion Principles & Flue Systems 3](https://practicetestgeeks.com/ccn1-combustion-principles-flue-systems-3-practice-test) (6 questions)
- [CCN1 Pipework Installation & Tightness Testing](https://practicetestgeeks.com/ccn1-pipework-installation-tightness-testing-practice-test) (6 questions)
- [CCN1 Pipework Installation & Tightness Testing 2](https://practicetestgeeks.com/ccn1-pipework-installation-tightness-testing-2-practice-test) (6 questions)
- [CCN1 Gas Emergency Procedures 2](https://practicetestgeeks.com/ccn1-gas-emergency-procedures-2-practice-test) (6 questions)
- [CCN1 Meter and Controls](https://practicetestgeeks.com/ccn1-meter-and-controls-practice-test) (6 questions)
- [CCN1 Combustion and Ventilation](https://practicetestgeeks.com/ccn1-combustion-and-ventilation-practice-test) (6 questions)
- [CCN1 Flue Systems and Chimneys 2](https://practicetestgeeks.com/ccn1-flue-systems-and-chimneys-2-practice-test) (6 questions)
- [CCN1 Gas Safety Regulations](https://practicetestgeeks.com/ccn1-gas-safety-regulations-practice-test) (6 questions)
- [CCN1 Gas Safety Regulations 2](https://practicetestgeeks.com/ccn1-gas-safety-regulations-2-practice-test) (6 questions)
- [CCN1 Gas Emergency Procedures](https://practicetestgeeks.com/ccn1-gas-emergency-procedures-practice-test) (6 questions)
- [CCN1 Purging Procedures](https://practicetestgeeks.com/ccn1-purging-procedures-practice-test) (6 questions)
- [CCN1 Purging Procedures 2](https://practicetestgeeks.com/ccn1-purging-procedures-2-practice-test) (6 questions)
- [CCN1 Purging Procedures 3](https://practicetestgeeks.com/ccn1-purging-procedures-3-practice-test) (6 questions)

## Reference Pages

- [ACS CCN1 Practice Test PDF (Free Printable 2026)](https://practicetestgeeks.com/ccn1/ccn1-practice-test-pdf)

## About Practice Test Geeks

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