Does a New Boiler Need a Gas Safety Certificate?

Does a new boiler need a gas safety certificate in the UK?

A new boiler installation must be carried out by a Gas Safe registered engineer. This is a legal requirement to ensure that the work complies with national safety regulations. However, if you are a homeowner and not renting the property out, there is no legal obligation to receive a gas safety certificate after installation. That said, the installation must still meet Building Regulations and be registered correctly. Landlords, on the other hand, are required by law to obtain a gas safety certificate for all gas appliances including new boilers.

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What does a gas safety certificate confirm?

A gas safety certificate, also known as a CP12, is an official record that confirms a Gas Safe engineer has inspected and approved the boiler installation. It includes the following information:

Inspection Details

Engineer Information

  • Engineer name and Gas Safe registration number

  • Date of inspection

Property Information

  • Address of the property

  • Name of the property owner or landlord

This certificate gives peace of mind that the boiler was fitted safely and is operating correctly.

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Pro Tip: Store your gas safety records and service documents digitally. This makes it easier to access when selling, remortgaging, or renewing landlord insurance.

Mo

Engineer, Landlord Building Certificates

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Are gas safety certificates a legal requirement for homeowners?

For homeowners, a gas safety certificate is not a legal requirement after a new boiler installation. However, using a Gas Safe registered engineer is compulsory. The work must also be registered with the local authority to comply with Building Regulations, and most installers will handle this on your behalf.

Although the certificate itself is optional, keeping documentation related to the boiler installation and the engineer’s Gas Safe credentials is recommended. It can help during property sales or future servicing.

Annual servicing for homeowners

Booking an annual boiler service is strongly recommended to keep your system safe and efficient. A Gas Safe engineer can carry out a full inspection and provide a written service record.

Are landlords legally required to obtain a gas safety certificate?

Yes. Landlords in the UK are legally required to carry out an annual gas safety check for every rental property. This includes new boiler installations as well as existing gas appliances.

Legal requirements for landlords:

  • Gas appliances must be inspected every 12 months

  • A valid CP12 certificate must be provided to tenants within 28 days of the check

  • Records must be kept for at least two years

The certificate must clearly show what was tested, the outcome, and whether any repairs are recommended.

For landlords managing properties in London, services such as Landlord Building Certificates offer easy booking and fixed pricing for gas safety certificates.

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Why using a Gas Safe engineer matters

All gas work in the UK must be carried out by a Gas Safe registered engineer. This is non negotiable. The engineer’s ID card should include their photo, registration number and the types of gas work they are qualified to do.

You can verify an engineer’s credentials on the official Gas Safe Register website. Always check before any work begins.

Should you request a gas safety certificate even if it is not required?

Yes, many homeowners choose to request a gas safety certificate after installation. It creates a formal record of the work, confirms the appliance was tested and reassures future buyers or residents. While not legally required, it offers clear documentation of safe installation by a qualified professional.

Boiler installation and selling your home

If you are planning to sell your home, having a gas safety certificate or boiler service record can be helpful. Some buyers or conveyancers may ask for proof that the boiler was installed correctly. Having the paperwork ready can save time and avoid unnecessary delays.

Do you need help with a new boiler installation?

If you need a new boiler installed or want to make sure your current system is safe, contact a qualified Gas Safe engineer. Whether you are a homeowner or landlord, booking a proper inspection or service gives you confidence that everything is running safely and legally.

To find out more about landlord responsibilities, visit this official guide on Gas Safety Checks for Landlords.

Pro Tip: Registering your boiler installation with Building Control helps you prove compliance and may be requested during property sales. Always ask your installer to handle this as part of the job.

Laura

Engineer, Landlord Building Certificates

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Vented and Unvented Gas Appliances

How do vented and unvented gas appliances differ in rented properties?

Vented gas appliances remove combustion gases through a flue or chimney. These include boilers, fires and water heaters that must be connected to a properly fitted venting system. Unvented appliances, such as portable gas heaters, release combustion products directly into the room.

Safety and Legal Implications

Unvented appliances require permanent ventilation and must never be used in bedrooms or bathrooms. Carbon monoxide alarms are legally required in rooms with solid fuel or gas appliances. Landlords must ensure that vented systems meet manufacturer and regulatory guidelines. A Gas Safe engineer should carry out all installations and annual inspections to confirm safety.

Compliance and Tenant Information

Tenants should be given clear instructions about using portable gas appliances safely. These appliances must be CE marked and regularly checked for leaks or wear. Including them in your Gas Safety Record is highly recommended even if not required.

Fixed and Portable Gas Appliances in Rentals

What are the responsibilities for fixed and portable gas appliances in rented homes?

Fixed appliances are permanently connected to the gas supply and include boilers, gas fires and integrated cookers. These must be installed by Gas Safe registered engineers and checked annually as part of the landlord’s CP12 responsibilities. Portable gas appliances are not fixed in place and are usually brought in by the tenant, such as cabinet heaters or small gas camping stoves.

Safety and Inspection

While the law requires landlords to maintain only the appliances they supply, it is good practice to record all gas appliances on the Gas Safety Record. This includes any portable units provided with the tenancy. Landlords can reduce liability and protect tenants by regularly inspecting these appliances and ensuring proper instructions are available.

Legal Grey Areas

Portable appliances provided by tenants are legally their own responsibility. However, if a tenant is using a portable heater inappropriately or in a location where it could pose a hazard, the landlord should address the issue. Some councils require inspection of all gas appliances regardless of ownership under licensing schemes.

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