Domestic boiler servicing and maintenance

Boiler Service London

Request planned servicing for a domestic gas boiler in a London home or rental property. Send the boiler make, model, fuel, current symptoms and property access details so the correct service route can be confirmed before an appointment.

Best forDomestic gas boilers in owner-occupied or rented London homes
Send firstMake, model, fuel, last service date, symptoms and postcode
Confirm separatelyRepairs, parts, CP12 record, LPG supply or commercial plant
Emergency?Gas smell or suspected carbon monoxide needs immediate action
Avoid the wrong appointment

Start with the boiler and the outcome you need

Routine maintenance, a recurring fault, landlord compliance and a commercial plant-room visit are different jobs. A clear enquiry protects you from paying for a service that cannot answer the original problem.

  • Domestic home, rental property, HMO or business premises.
  • Routine service, fault, repair, CP12 or warranty evidence.
  • Natural gas, LPG or another fuel.
  • Working heating and hot water, plus any code or symptom.
Send boiler details
Choose by purpose

Which boiler visit should you request?

Use the closest description below. The booking team can then check the engineer category, likely time on site and whether more information is needed.

Planned boiler service

The boiler is operating and you want maintenance completed to the appliance instructions, with a service record or engineer report for your property file.

Fault or repair enquiry

There is no heating, no hot water, a fault code, leak, pressure loss, unusual noise or intermittent operation. State this before booking because repair work and parts are separate.

Landlord service and CP12

You need boiler maintenance and the annual landlord gas safety check. List every landlord-provided gas appliance and ask for both jobs and records to be confirmed.

Commercial or communal plant

The boiler serves a business, block, shared plant room or non-domestic system. Send appliance ratings and site restrictions for the dedicated commercial route.

Planned maintenance

What a gas boiler service is designed to do

A service is a planned examination and maintenance visit for the named boiler. The engineer works to the manufacturer instructions, the appliance condition and the gas-safety requirements relevant to the task. The exact procedure therefore varies between boiler types, ages and models.

Accessible physical condition, boiler controls, safe operation, combustion, flue arrangements, ventilation where relevant, signs of leakage and maintenance needs may be considered. Cleaning or adjustment is carried out where the instructions and findings require it. The report should say what was completed, what could not be completed and what needs attention.

Scope follows the appliance

Checks depend on the boiler and its instructions

There is no responsible one-line checklist that fits every boiler. These are common service areas, not a promise that every item applies to every visit.

Condition and installation

Visible condition, signs of distress or deterioration, accessible connections and the appliance environment are considered within the agreed service scope.

Operation and controls

The engineer checks operation and relevant controls using the appliance procedure. Customer-reported lockouts or intermittent behaviour should be disclosed beforehand.

Combustion and flueing

Required combustion and flue checks follow the boiler instructions, installation arrangement and competent engineer judgement. Concealed or inaccessible sections can limit scope.

Maintenance findings

The engineer records service work, safety concerns, limitations and recommendations. Repairs or replacement parts may require approval or another appointment.

Prevent scope surprises

A service does not automatically include every heating job

Opening a service enquiry does not mean that repairs, parts, a power flush, radiator balancing, controls replacement, electrical work, a full system clean, boiler replacement or unrelated appliance checks are included. Some faults need diagnosis before a repair can be priced.

A boiler service also does not automatically create a landlord gas safety record, approve the whole gas installation or satisfy a manufacturer, insurer or property manager whose exact document requirements have not been provided.

Rental properties

Landlord maintenance and gas safety are related but distinct

HSE separates the duty to maintain landlord-provided gas appliances and flues from the annual safety check and gas safety record. A sensible booking records both requirements clearly.

Maintain the boiler and flue

Follow the manufacturer servicing instructions. Where they are unavailable, HSE recommends annual servicing unless a Gas Safe registered engineer advises otherwise.

Arrange the annual safety check

Relevant landlord-provided gas appliances and flues require the statutory check at intervals of no more than 12 months, followed by the correct record.

Plan lawful access

Give suitable notice, coordinate the tenant or key holder and keep records of access attempts. HSE states that landlords must not use force to enter for maintenance or checks.

Record repairs separately

Keep the service report, gas safety record and repair evidence together without treating one document as proof that every other task has been completed.

No heating or hot water

Describe a fault before booking routine servicing

Loss of heating, loss of hot water, repeated pressure loss, a leak, unusual noise, ignition failure or a fault code can change the job from planned maintenance to diagnosis or repair. Photograph the display and write down when the problem occurs. Say whether the boiler restarts, whether both services are affected and whether anyone has already worked on it.

Do not remove the boiler case, bypass safety controls or attempt gas work. A fault may need parts, manufacturer information or a return visit. Clear information allows the booking team to set expectations before access is arranged.

Quotation and access checklist

Send these details before the boiler service

One complete enquiry helps confirm the route, likely scope and access requirements without asking you to repeat the property details.

  • Full London address, postcode and property type.
  • Homeowner, landlord, agent, tenant or property manager contact.
  • Boiler make, model, fuel, approximate age and last service date.
  • Photographs of the boiler, display and data label where safely visible.
  • Routine service, current fault, warranty record or landlord gas safety requirement.
  • Heating and hot-water status, fault code, pressure reading and reported symptoms.
  • Access contact, keys, parking, pets, cupboard clearance and any concierge procedure.
  • Preferred dates, tenancy deadline and other certificates needed at the property.
From enquiry to record

What happens before, during and after the visit

Before confirmation, the booking team reviews the property, boiler, fuel, requested outcome, symptoms and access. The attending engineer must be Gas Safe registered and qualified for the actual gas and appliance work. LPG and commercial systems need their relevant categories.

During the visit, the engineer follows the applicable servicing procedure and explains any immediate safety concern or limitation. After the visit, read the record and recommendations. Authorise repairs separately where required and keep the service evidence with warranty, landlord and property-management documents.

Smell gas or suspect carbon monoxide?

Do not wait for a boiler service appointment. Open doors and windows, move into fresh air, avoid flames and electrical switches, and call the National Gas Emergency Service on 0800 111 999. Call 999 or 112 if someone has collapsed, has severe symptoms or there is immediate danger. Follow the LPG supplier emergency procedure where the property uses LPG.

Official UK guidance

Check maintenance, competence and emergencies at source

These primary sources explain landlord maintenance, gas-safety checks, workplace duties, registered-engineer competence and the national gas emergency route. The boiler instructions and actual site conditions still determine the service procedure.

Tell us about the boiler

Request a boiler service quotation

Use the message box for the boiler make and model, fuel, last service date, any fault code or symptom, property status, access notes and whether a landlord gas safety record is also required.

    Need a landlord certificate in London?

    Send the property address, service needed and best contact number. We will confirm availability, access details and the next appointment slot.

    For urgent bookings, call 020 8004 7911.

    Common customer questions

    Boiler service FAQs

    What is normally included in a gas boiler service?

    The engineer follows the boiler manufacturer's servicing instructions and the condition found on site. The visit normally includes checks of the boiler's physical condition, controls, safe operation, combustion, flue arrangements, ventilation where relevant and signs of leakage or deterioration. Cleaning, adjustment and test results depend on the appliance and instructions. Ask for the agreed scope before booking because a service does not automatically cover every radiator, control, pipe, cylinder or other gas appliance in the property.

    How often should a boiler be serviced?

    Follow the boiler manufacturer's instructions and any warranty conditions. HSE says landlord-provided gas appliances and flues should be serviced in accordance with the manufacturer's instructions; where those instructions are unavailable, HSE recommends annual servicing unless a Gas Safe registered engineer advises otherwise. Owner-occupiers should also use the manufacturer's schedule and competent advice rather than treating a service date as a universal legal certificate renewal date.

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

    No. A boiler service is maintenance carried out to the appliance instructions and the agreed scope. A landlord gas safety check is the statutory annual safety check of relevant landlord-provided gas appliances and flues, followed by the required gas safety record. The two jobs can sometimes be arranged for the same visit, but only when both have been requested and confirmed. A service record alone should not be presented to a tenant as the landlord gas safety record.

    Can a homeowner book a boiler service?

    Yes. Homeowners can request planned servicing for a domestic gas boiler and should send the address, boiler make and model, fuel type, approximate age, last service date and any current symptoms. Tell the booking team if the boiler is still under warranty or if a manufacturer service record is important. If the property uses LPG, oil, electricity or a communal heating system, say so at the start because the suitable engineer and service route may be different.

    Does a boiler service include repairs and replacement parts?

    Not unless the quotation says so. A routine service may identify a worn component, fault, unsafe condition or further investigation, but parts, repair labour, system draining, electrical work and a return visit can be separate. Do not assume a service price includes a fault repair. Describe any fault code, leak, noise, pressure loss, intermittent operation or loss of heating before the appointment so the enquiry can be assessed as possible repair work rather than routine servicing.

    What details should I send for a boiler service quotation?

    Send the full London address and postcode, property type, homeowner or rental status, boiler make and model, fuel type, approximate age, last service date, photographs of the boiler and data label, fault codes or symptoms, whether heating and hot water work, access contact, parking or key arrangements, preferred date and any deadline. Landlords and agents should also say whether the annual gas safety check and record are required during the same appointment.

    What should I do if the boiler has no heating or hot water?

    Treat it as a fault enquiry, not automatically as a routine service. Note the display message or fault code, whether the boiler has power, the pressure shown, whether both heating and hot water are affected and when the problem started. Do not remove the boiler case or attempt gas work. If you smell gas, suspect carbon monoxide, see signs of fire or anyone is unwell, follow the emergency guidance rather than waiting for a service appointment.

    Can you service an LPG boiler?

    LPG boiler work requires the correct current LPG and appliance competence. State clearly that the boiler uses LPG and explain whether the supply is from cylinders or a bulk tank. The boiler service does not automatically inspect the tank, cylinder storage, supplier equipment or the whole LPG installation. Those boundaries should be agreed separately. Use the dedicated LPG route where the fuel supply or wider LPG paperwork is central to the enquiry.

    Can this page be used for a commercial boiler service?

    Send the site details, but expect the enquiry to move to the commercial boiler route. Commercial plant can involve different engineer categories, appliance outputs, controls, plant-room access, shutdown planning, flues, ventilation and maintenance records. Include the business type, boiler make and model, rated input or output, number of appliances, fuel, plant-room photographs and operating restrictions so domestic and commercial work are not confused.

    What paperwork should I receive after a boiler service?

    Ask for a service record or engineer report that identifies the property, boiler, date, work completed, test results or observations where applicable, defects, limitations and recommended next steps. Keep invoices and repair evidence with it. The document is not automatically a landlord gas safety record, warranty approval or confirmation that every part of the heating system has been checked. Read the scope before relying on it for a tenant, manufacturer, insurer or property file.

    Need a boiler service in London?

    Send the postcode, boiler details, fuel, service history, symptoms and access notes. Those details help confirm the correct appointment without treating every heating enquiry as routine servicing.

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