Boiler servicing and repair responsibilities for landlords

Boiler servicing is one of the most common maintenance questions landlords face, and one where the line between a legal duty and good practice is widely misunderstood. This guide sets out how often a boiler should be serviced in a rental property, the difference between a boiler service and a gas safety certificate, what you are actually required to do, and what sensible maintenance looks like. It also answers the question tenants and landlords most often ask when something goes wrong. Who is responsible for repairing a broken boiler, and when a tenant is liable instead.

Who is responsible for boiler repairs, the landlord or the tenant?

Under section 11 of the Landlord and Tenant Act 1985, the landlord is responsible for repairing and maintaining the boiler, heating and hot water system, and this duty cannot be passed to the tenant through the tenancy agreement. A broken boiler that leaves a tenant without heating or hot water is the landlord's to fix, and in cold weather a complete loss is usually treated as an emergency to be dealt with within 24 hours where possible. A tenant is only liable where they have caused the damage through misuse, which the landlord would need to evidence. Tenants are expected to use the system sensibly and to report faults promptly, and it is reasonable to set that expectation in writing, but the repairing duty itself stays with the landlord. Where a lack of heating or hot water makes the property unfit to live in, it can also engage the landlord's obligations under the fitness for habitation rules.

How often should a landlord get a boiler serviced?

There is no specific legal requirement for a landlord to service a boiler annually. The duties that do apply are different. Most manufacturers’ warranties require an annual service to stay valid, and under Section 11 of the Landlord and Tenant Act 1985 you must keep the installations for heating and hot water in repair and working order. In practice, annual servicing is the sensible minimum, and most experienced landlords schedule it, because it keeps the boiler efficient, reduces the risk of a mid-winter breakdown, extends its life, and catches developing faults early. A boiler failure that leaves a tenant without heating or hot water in cold weather is likely to be a disrepair issue requiring urgent action. Keeping stored hot water at around 60°C also helps control legionella.

Gas safety certificate versus boiler service: what is the difference?

These are two separate things that are often confused. A gas safety certificate (a CP12) is a legal requirement under the Gas Safety (Installation and Use) Regulations 1998. Every gas appliance, fitting and flue must be checked by a Gas Safe registered engineer every 12 months, the record given to the tenant within 28 days (or to a new tenant before move-in), and failing to obtain one is a criminal offence. Our complete guide to gas safety certificates covers that duty in full.

A boiler service is maintenance, not a legal inspection. The engineer opens the boiler, cleans internal components, checks and adjusts settings, tests efficiency, and flags worn parts. A gas safety check, by contrast, assesses the appliance’s external condition, connections, flue and combustion performance without that depth of internal work. Many landlords have both done in one visit by the same engineer, which is efficient. If only one is done, the gas safety check is the one you cannot skip.

What a boiler service includes

A full service by a Gas Safe registered engineer typically covers a visual inspection of the boiler, flue and pipework; combustion and efficiency testing; cleaning of the heat exchanger, burner and main components; checks on the expansion vessel, pressure relief valve, condensate trap and pipe; testing of safety devices; and a check of the controls and programmer, with any worn parts identified. Because a boiler is a fixed combustion appliance, the property must also have a working carbon monoxide alarm in the same room. The engineer provides a service record; keep it with your other property repairs documentation, as it is useful evidence for a landlord insurance claim or at sale.

Typical cost

A standard boiler service costs around £60 to £120 depending on location and engineer. Bundling the service with the gas safety check in one visit usually runs £80 to £150, cheaper than booking them separately, and many engineers offer multi-property discounts. Building a relationship with one reliable local Gas Safe engineer who knows your properties tends to produce better results and pricing than switching each year.

What if the boiler breaks down during a tenancy?

As above, treat any loss of heating or hot water as an urgent repair under section 11. What matters operationally is responding quickly and recording that you did: give tenants an out-of-hours emergency contact, and capture the report properly. August's maintenance reporting lets tenants flag a fault through the app and timestamps when it was reported and resolved, which matters if a dispute later arises over how quickly you acted.

Frequently asked questions

Is a boiler service a legal requirement for landlords? 

No. There is no statute requiring an annual boiler service. The legal duties are to keep heating and hot water working under Section 11, and to hold a valid annual gas safety certificate. Servicing is best practice and usually a warranty condition.

How often should a landlord service a boiler? 

Annually is the recommended minimum, and most warranties require it.

Is a boiler service the same as a gas safety check? 

No. The gas safety check (CP12) is the legal annual inspection; the service is deeper maintenance. They are often done together.

Who is responsible for boiler repairs, the landlord or the tenant? 

The landlord. Under section 11 of the Landlord and Tenant Act 1985 the landlord must keep the boiler, heating and hot water in repair and working order, and this cannot be transferred to the tenant. The tenant is only responsible where they have caused the damage through misuse. A tenant left without heating or hot water should report it promptly, and the landlord should treat a total loss in cold weather as an emergency.

Stay ahead of it

The simplest approach is to put the annual service and the gas safety renewal on the same reminder so neither slips. August’s reminders track both renewal dates and store the service record and certificate against the property, so the evidence is to hand when you need it.

Disclaimer: This article is for general information only and is not legal, financial, or professional advice. Landlord and tenant law can change, and this reflects the position at the time of writing. Always seek independent advice before acting in relation to your property or tenancy.