Types of Commercial Gas Safety Certificates: A Comprehensive Guide

Learn about the different types of commercial gas safety certificates, and find out what steps you need to take to ensure your business is up-to-code with regards to gas safety protocols.

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Gas safety is a critical aspect of managing commercial properties, as it ensures the well-being of occupants and helps prevent potentially hazardous situations. Commercial gas safety certificates are essential documents that certify the safe installation, operation, and maintenance of gas appliances and systems in commercial premises. 

In this comprehensive guide, we will explore the various types of commercial gas safety certificates, their importance, and the process of obtaining them.

What is a Commercial Gas Safety Certificate?

A commercial gas safety certificate is a legal document that verifies the safety and compliance of gas appliances and systems within a commercial property. These certificates are issued by registered gas engineers after conducting thorough inspections and tests to ensure that gas installations meet the required safety standards and regulations.

Commercial gas safety certificates are crucial for several reasons:

Legal Compliance: In many countries, including the UK, it is a legal requirement for commercial property owners and managers to obtain gas safety certificates for their premises. Failure to comply with these regulations can result in fines, legal action, and even imprisonment.

Safety: Regular gas safety checks help identify and rectify potential hazards, ensuring the safety of occupants and preventing accidents such as gas leaks, fires, and carbon monoxide poisoning.

Insurance Requirements: Many insurance providers require commercial property owners to have valid gas safety certificates in place as part of their policy terms and conditions. Failure to obtain a commercial gas safety certificate may invalidate your insurance coverage.

Types of Commercial Gas Safety Certificates

There are several types of commercial gas safety certificates, each targeting specific aspects of gas safety in commercial properties. Some of the most common types of certificates include:

Gas Safety Inspection Certificate (CP17)

The Gas Safety Inspection Certificate, also known as CP17, is issued after a comprehensive inspection of all gas appliances, pipework, and flues within a commercial property. This certificate confirms that the gas installations meet the required safety standards and are in good working order.

Gas Installation Safety Report (CP16)

The Gas Installation Safety Report, or CP16, is a document issued after the installation of new gas appliances or systems in a commercial property. This certificate verifies that the new installations have been carried out by a registered gas engineer and meet the necessary safety requirements.

Gas Appliance Service Record (CP42)

The Gas Appliance Service Record, also known as CP42, is a document that records the servicing and maintenance history of gas appliances within a commercial property. This certificate is issued after a registered gas engineer has serviced a gas appliance, ensuring that it is functioning safely and efficiently. 

Commercial Catering Inspection Certificate (CP42)

The Commercial Catering Inspection Certificate, or CP42, is specifically designed for commercial kitchens and catering establishments. This certificate covers the inspection and testing of gas appliances used in commercial catering, such as cookers, ovens, and grills.

Gas Emergency Service Provider Report (CP22)

The Gas Emergency Service Provider Report, or CP22, is a document issued following a gas emergency, such as a gas leak or carbon monoxide poisoning incident. This certificate confirms that a registered gas engineer has attended the emergency, identified the cause, and taken appropriate action to rectify the issue and ensure the safety of the property and its occupants.

Obtaining a Commercial Gas Safety Certificate

To obtain a commercial gas safety certificate for your property, follow these steps:

Hire a Registered Gas Engineer: It is crucial to hire a registered gas engineer to carry out the necessary inspections and tests on your property’s gas installations. In the UK, gas engineers must be registered with the Gas Safe Register, which is the official list of gas businesses and engineers who are qualified to work safely and legally on gas appliances.

Schedule an Inspection: Arrange a suitable date and time for the registered gas engineer to visit your property and conduct the required inspection.

Review the Findings: After the inspection, the gas engineer will provide you with a detailed report outlining their findings and any necessary remedial actions. Review this report carefully and discuss any concerns or questions with the engineer.

Take Remedial Action: If the gas engineer identifies any issues or non-compliance during the inspection, it is essential to take the necessary remedial action promptly. This may involve repairing or replacing faulty gas appliances, upgrading pipework, or improving ventilation.

Obtain the Certificate: Once any identified issues have been rectified, the gas engineer will issue the appropriate commercial gas safety certificate for your property. Keep this certificate in a safe place, as you may need to present it to regulatory authorities, insurance providers, or potential tenants.

What is Included in a Gas Safety Certificate

A Gas Safety Certificate typically consists of several key sections that detail the findings of the gas safety inspection. These sections include:

Engineer and Property Details

The certificate begins with essential information about the engineer who conducted the inspection and the property where the inspection took place. This section includes:

  • The name, registration number, and contact details of the Gas Safe engineer
  • The date of the inspection
  • The address of the property being inspected
  • The name and contact details of the property owner or landlord

Appliance and Flue Information

This section provides a comprehensive overview of each gas appliance and flue present in the property that was inspected. For each appliance or flue, the following information is typically included:

  • The type and location of the appliance or flue (e.g., gas boiler, gas cooker, gas fire, etc.)
  • The appliance make and model, if applicable
  • The appliance’s installation date, if available

Inspection Results and Safety Checks

In this crucial section, the Gas Safe engineer records the results of various safety checks performed on each appliance during the inspection. These checks may include:

  • Visual examination of the appliance and its components
  • Verification of the appliance’s gas pressure and/or gas rate
  • Testing of safety devices, such as ventilation and flue flow
  • Combustion analysis to ensure the appliance is burning gas correctly
  • Inspection of any flue or chimney connected to the appliance

The engineer will record whether each safety check was satisfactory or unsatisfactory. If a check is deemed unsatisfactory, the engineer may provide further information regarding the issue and any necessary remedial actions.

Defects and Required Actions

If any defects or safety concerns are identified during the inspection, this section will detail these issues and outline the required corrective actions. Depending on the severity of the issue, the engineer may classify the appliance as “at risk”, “not to current standards”, or “immediately dangerous”.

Confirmation of Compliance

The final section of the Gas Safety Certificate serves as confirmation that the inspection has been completed in accordance with the Gas Safety (Installation and Use) Regulations. The Gas Safe engineer will sign and date the certificate to validate its authenticity.

Importance of Obtaining a Gas Safety Certificate

For property owners, particularly landlords, obtaining a Gas Safety Certificate is not only a legal requirement but also an essential step in ensuring the safety and well-being of occupants. Some key reasons for obtaining a Gas Safety Certificate include:

  • Compliance with legal requirements: Landlords are legally obliged to obtain a Gas Safety Certificate annually for each rental property with gas appliances or installations.
  • Ensuring tenant safety: Regular gas safety inspections help identify and address potential safety hazards, protecting tenants from risks such as gas leaks, carbon monoxide poisoning, and fires.
  • Maintaining appliance efficiency: Regular inspections can help maintain the efficiency and longevity of gas appliances by identifying and addressing minor issues before they escalate into more significant problems.

How Long Are Gas Safety Certificates Valid For

Gas Safety Certificates are generally valid for 12 months from the date of issue. This means that property owners, particularly landlords, are responsible for obtaining a new Gas Safety Certificate every year to ensure compliance with legal requirements and guarantee the safety of their tenants.

Importance of Regular Gas Safety Inspections

Annual gas safety inspections serve several vital purposes, including:

Ensuring the Safe Operation of Gas Appliances and Installations

Regular inspections help detect potential issues with gas appliances, fittings, and flues that may pose a risk to the safety of occupants. Gas Safe engineers check for signs of wear and tear, improper installation, or malfunctioning components that could lead to gas leaks, carbon monoxide poisoning, or even fires and explosions.

Compliance with Legal Requirements

For landlords, obtaining an annual Gas Safety Certificate is required by law to ensure that all gas installations in their rental properties are safe and compliant with regulations. Failure to obtain a valid certificate can result in legal consequences, including fines and penalties, as well as potential liability for any accidents or injuries caused by unsafe gas installations.

Maintaining the Efficiency and Longevity of Gas Appliances

Regular gas safety inspections can also help maintain the efficiency and longevity of gas appliances by identifying and addressing minor issues before they escalate into more significant problems. This not only ensures the safe operation of the appliances but also helps property owners save on energy costs and reduce the need for costly repairs or replacements.

Protecting Occupants From Health Risks

Gas-related issues, such as gas leaks or carbon monoxide poisoning, can pose severe health risks to occupants of a property. Regular inspections help detect these issues early on, allowing property owners to take corrective action and protect the health and well-being of their tenants or family members.

Responsibilities of Property Owners in Maintaining Gas Safety Compliance

Property owners, particularly landlords, have several responsibilities when it comes to maintaining gas safety compliance and ensuring the validity of their Gas Safety Certificates:

Scheduling Annual Inspections

Landlords must arrange for an annual gas safety inspection to be carried out by a registered Gas Safe engineer. It’s essential to plan these inspections well in advance of the current certificate’s expiration to avoid any gaps in certification and ensure continuous compliance with legal requirements.

Providing Tenants with a Copy of the Gas Safety Certificate

Upon completion of a successful inspection, landlords must provide their tenants with a copy of the Gas Safety Certificate within 28 days of the inspection. For new tenants, a copy of the certificate should be given before they move in.

Retaining Records of Gas Safety Inspections

Landlords are required to keep records of all gas safety inspections and certificates for at least two years. This documentation may be requested by local authorities or other relevant agencies to verify compliance with gas safety regulations.

Ensuring Access for Gas Safe Engineers

Landlords must ensure that Gas Safe engineers have access to the property to carry out annual inspections. This may involve coordinating with tenants to schedule a suitable date and time for the inspection.

Addressing Identified Issues Promptly

If a gas safety inspection uncovers any issues or defects with gas installations, landlords are responsible for addressing these problems promptly and ensuring that necessary repairs or replacements are carried out by a registered Gas Safe engineer.

When Should You Have Your Commercial Property Inspected for Gas Leaks

There are several circumstances when commercial property owners should consider having their premises inspected for gas leaks. Some of these situations include:

Routine Maintenance and Inspections

One of the most effective ways to detect and prevent gas leaks is through routine maintenance and inspections. Commercial property owners should schedule regular gas safety inspections with registered Gas Safe engineers to ensure that all gas appliances, fittings, and flues are functioning correctly and safely.

New Installations or Renovations

If your commercial property has recently undergone renovations or if new gas appliances have been installed, it is essential to have a gas leak inspection conducted. This helps ensure that all new installations and connections have been carried out correctly and that there are no leaks or other safety hazards resulting from the work.

Suspected Gas Leaks or Odors

If you or anyone on your property detects the smell of gas or suspects a gas leak, it is imperative to act immediately. Evacuate the premises, turn off the main gas supply if it is safe to do so, and call a registered Gas Safe engineer to conduct a thorough inspection. Do not attempt to locate or fix the leak yourself, as this can be extremely dangerous.

Signs of Carbon Monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that can be produced by faulty or improperly vented gas appliances. Exposure to CO can lead to serious health issues or even death. If you notice any signs of carbon monoxide poisoning among occupants, such as headaches, dizziness, nausea, or confusion, it is essential to have your property inspected for gas leaks and faulty appliances immediately.

After Natural Disasters or Severe Weather Events

Natural disasters or severe weather events, such as earthquakes, hurricanes, or floods, can cause damage to gas lines and appliances, potentially resulting in gas leaks. Following such events, it is crucial to have your commercial property inspected by a Gas Safe engineer to ensure there are no gas-related safety hazards.

Importance of Regular Maintenance and Proactive Measures

In addition to scheduling gas leak inspections in the situations mentioned above, commercial property owners should also take proactive measures to minimize the risk of gas leaks and ensure the safety of their premises. Some key steps to consider include:

Regular Appliance Servicing

Ensure that all gas appliances on your property are serviced regularly according to the manufacturer’s recommendations. Regular servicing can help identify potential issues before they escalate into more significant problems, such as gas leaks or appliance malfunctions.

Install Carbon Monoxide Detectors

Installing carbon monoxide detectors throughout your commercial property can provide an early warning system in the event of a gas leak or faulty appliance. Ensure that detectors are placed in appropriate locations, such as near gas appliances and in areas where occupants spend a significant amount of time.

Educate Employees and Occupants

Educate employees and other occupants about the signs of gas leaks and the appropriate actions to take if a leak is suspected. This includes evacuating the premises, turning off the main gas supply if it is safe to do so, and contacting a registered Gas Safe engineer to conduct an inspection.

Maintain Proper Ventilation

Ensure that all gas appliances have adequate ventilation to prevent the buildup of dangerous gases, such as carbon monoxide. This may involve regularly cleaning vents and flues, as well as ensuring that any new installations or renovations do not obstruct proper ventilation.


Commercial gas safety certificates play a vital role in ensuring the safety and compliance of gas installations in commercial properties. By understanding the various types of certificates and the process of obtaining them, property owners and managers can ensure their premises meet the required safety standards and protect the well-being of occupants. 

Remember to always work with registered gas engineers when conducting gas safety inspections and maintain up-to-date records of your property’s gas safety certificates.

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Post written by: Sam Guest

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