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Gas Safety Certificates & Boiler Servicing
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Understanding the Gas Safety Certificate (CP12)
A Gas Safety Certificate (CP12) is a legal document required in the UK for landlords to confirm that all gas appliances, flues, and pipework in a rental property have been inspected by a Gas Safe registered engineer. It ensures that gas systems are working correctly and safely to protect tenants from potential hazards such as gas leaks or carbon monoxide poisoning.
The certificate outlines the results of the checks, notes any issues found, and confirms any repairs made. It must be renewed every 12 months and a copy must be provided to current or new tenants within 28 days of the inspection.
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CP12 & SERVICING
Get £49 Off When You Bundle Your Gas Safety Check and Boiler Service!
Boiler SERVICING
Regular servicing keeps your boiler healthy and your warranty covered.
What’s Included in a Boiler Service?
An annual boiler service involves a thorough inspection by a qualified engineer to ensure your boiler is safe, efficient, and operating correctly. The engineer will perform a detailed visual check for signs of wear, water leaks, poor installation, or damage to electrical components, as well as any fire or safety hazards.
The service includes essential efficiency tests such as a gas rate check, flue gas analysis, and a boiler tightness test. Safety checks will also be conducted, including combustion analysis, case seal integrity, boiler stability, and inspection of air vents, flues, and chimneys.
In addition, the engineer will check system pressure at various points to confirm the boiler is running within the correct parameters and highlight any issues that may require attention or repair.
Do You Legally Need a Gas Safety Certificate?
Homeowners
While homeowners in the UK are not legally required to obtain a Gas Safety Certificate, it is strongly recommended to have all gas appliances professionally inspected and serviced at least once a year. Regular maintenance ensures your boiler and other gas systems are running safely and efficiently—protecting both your home and your family.
Landlords
If you’re a landlord, obtaining a Gas Safety Certificate is a legal requirement. Under the Gas Safety (Installation and Use) Regulations 1998, all rental properties must undergo an annual gas safety inspection by a Gas Safe registered engineer. This applies to all gas appliances, pipework, and flues within the property. A valid CP12 certificate must be issued and a copy provided to your tenants.
FAQs
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If any appliance fails the inspection, your Gas Safety Record will clearly state the results. Appliances deemed “Not Safe to Use” will be flagged under one of the following categories:
At Risk (AR): One or more faults pose a potential danger to life or property. With your permission, the engineer will turn off the installation and advise it remains unused until repaired.
Immediate Danger (ID): The appliance is an immediate threat to life or property. With your consent, the engineer will disconnect it. If you refuse, they must notify the Gas Emergency Service Provider (ESP), who has legal authority to disconnect the supply for safety reasons.
Using an appliance marked Immediate Danger before repair can put lives at serious risk.
Non-compliance with the Gas Safety (Installation and Use) Regulations 1998 carries serious risks due to the dangers of gas leaks or carbon monoxide exposure. Landlords are legally required to ensure their tenants’ safety by conducting an annual gas safety check and providing a valid CP12 certificate.
Failing to meet these obligations can lead to heavy penalties, including fines up to £6,000 per offence, imprisonment for up to six months, or both. Additionally, insurance policies may be invalidated if you don’t comply. In tragic cases involving loss of life, those responsible may face manslaughter charges.
When you hire a Gas Safe Registered Engineer, they thoroughly inspect all gas appliances to ensure they’re safe and free from risks like gas or carbon monoxide leaks. The process includes:
Visual Inspection: Checking for obvious faults or damage.
Chimneys and Flues: Using smoke pellets to detect blockages—any smoke that doesn’t exit properly signals a problem.
Gas Connections: Ensuring the gas supply is safe, secure, and compliant with regulations.
Ventilation: Confirming adequate oxygen supply for safe gas combustion.
Appliance Testing: Recording manufacturer details and testing each appliance to ensure correct operation and safe gas burning according to instructions.
After completing the inspection, the Gas Safe registered engineer will issue your Gas Safety Certificate (CP12). This certificate is provided digitally—either emailed to you or available for download from your online account.
The CP12 certificate includes essential details such as:
Description and location of each inspected appliance or flue
Name, registration number, and signature of the engineer
Date of inspection
Property address and landlord’s or agent’s contact information
Any safety defects identified and remedial actions taken
Results of all operational safety checks performed on the appliances
When booking a Gas Safety Certificate, you’ll need to specify how many appliances require inspection. This includes all fuel-burning gas appliances like gas or LPG boilers, gas hobs or cookers, and gas fires. For example, if your property has both a gas boiler and a gas hob, both will need to be inspected separately.
The cost of a gas safety check and certificate varies depending on the Gas Safe engineer and the number of appliances to be inspected. Typically, prices range from £90 to over £150 plus VAT. For a single appliance, like a gas boiler, you might pay around £60, with additional appliances such as gas fires or hobs increasing the cost.
At MultiCerts, we offer fixed pricing for Gas Safety Certificates: £69 for one appliance, £79 for two, and £89 for three. If you’re a tenant, your landlord is responsible for arranging and covering the cost of the annual inspection.
Gas safety checks for certificates must be carried out by a Gas Safe registered engineer (formerly CORGI registered). Before any work begins, always verify the engineer’s Gas Safe ID card to ensure they’re qualified for the specific job.
In the UK, landlords are legally required to have a valid Gas Safety Certificate (CP12) issued by a registered gas engineer after an annual inspection. Regular plumbers are not authorised to perform this check or issue the certificate.
While homeowners aren’t legally obligated to obtain a gas safety certificate, it’s strongly recommended they have their gas appliances inspected regularly to ensure safety.
Obtaining a Gas Safety Certificate for your property is essential for several important reasons—most notably, legal compliance. Being legally required to have one should be incentive enough.
There are three key reasons why a Gas Safety Certificate is vital:
Preventing Gas Leaks: Gas leaks are a leading cause of domestic fires and explosions in the UK, especially in multi-tenant buildings. During the inspection, the gas engineer visually checks pipes and connections to ensure they’re secure and leak-free.
Reducing Carbon Monoxide Risk: Carbon monoxide is an invisible, odorless gas that can be deadly. A gas safety check helps detect and address carbon monoxide leaks before they harm your tenants’ health.
Legal and Rental Requirements: Without a valid gas safety certificate, your property may not be legally rented out or sold. Buyers and tenants expect reassurance that the property is safe, and the certificate provides that peace of mind.
The duration of a typical gas safety check depends on how many appliances need inspecting and how easily the engineer can access them. Generally, the inspection takes between 25 and 45 minutes.
Gas Safety Certificates are valid for one year only. Landlords are required to keep records of the last two years’ certificates for compliance and reference.
Not having a valid Gas Safety Certificate (CP12) puts the safety of tenants and family members at serious risk. It’s also illegal—landlords renting properties in the UK must have a valid CP12.
Gas safety regulations are strict, and failing to comply can lead to severe penalties, including hefty fines, invalidated insurance, and in extreme cases, imprisonment. If loss of life or property occurs due to non-compliance, you could face charges of negligence or even manslaughter.
The good news is that obtaining a gas safety certificate can help you avoid these risks. If you’re unsure which registered gas engineer to choose for your inspection, contact us—we’re here to help!
The straightforward answer is yes—homeowners are not legally required to have a Gas Safety Certificate to sell their property, so private homeowners can sell without one.
However, obtaining a certificate is highly recommended. It not only confirms your home is safe for your family but also helps smooth the selling process, as buyers often look for reassurance about the property’s safety.