How often should I book a boiler service?
Book a boiler service once a year, unless the manufacturer specifies a different interval. An annual service checks safe operation, identifies wear before it becomes a breakdown and helps keep the boiler working efficiently.
The manufacturer’s instructions take priority. If they do not specify a different interval, keep the boiler on a yearly servicing cycle. The service date should not depend on whether the boiler appears to be working normally, because faults can develop without an obvious warning.
If you have recently moved into a property, check the service record before deciding when to book. An installation certificate, previous invoice or service label may show when the last inspection took place. If there is no reliable record, we can assess the boiler and establish an appropriate maintenance schedule.
Your boiler’s age and condition may affect what happens next. A newer boiler may need routine checks against the manufacturer’s instructions, while an older appliance can need closer attention to its burner, seals, heat exchanger, flue and controls. We record defects rather than treating a service as a reason to replace equipment automatically.
Your fuel type also matters. A gas boiler needs checks by an engineer legally qualified to work on gas appliances. An oil-fired boiler needs an engineer registered for oil equipment, which is particularly relevant on properties that are not connected to the gas grid. LPG appliances have their own servicing requirements, so tell us the fuel type when you arrange the visit.
Book before the heating season if you want time to deal with a fault before colder weather arrives. You do not need to wait for a breakdown, unusual noise or a drop in heating performance. Those signs call for attention sooner, because a service is planned maintenance rather than a substitute for investigating a fault.
- A yellow or unusual flame: stop using the appliance and arrange urgent professional advice.
- Repeated pressure loss: the boiler may have a leak or another fault that needs investigation.
- Black marks, soot or staining: do not ignore signs around the appliance or flue.
- Unusual banging, whistling or vibrating: arrange a check rather than waiting for the boiler to stop.
During a service, we check the appliance against the manufacturer’s requirements and inspect the relevant safety components. We assess combustion and operation, examine the flue where accessible, and look for signs of wear or damage. If the boiler needs repair, we explain what we have found before carrying out additional work.
A service record gives you a useful maintenance history. Keep it with the boiler paperwork, particularly if you plan to sell or let the property. It also helps us understand previous repairs when we return to the appliance.
For gas boilers, our Gas Safe registration covers the legal requirements for working on the appliance. For oil-fired systems, our OFTEC registration covers the relevant oil-heating work. We provide written quotations before additional work starts, so a service does not turn into an unexpected charge.
If your boiler has been switched off for several months, its annual service date still applies. A period without use does not reset the servicing interval. Before relying on the heating again, arrange an earlier check if the boiler shows a fault, pressure loss or unusual noise.
For a regular schedule, use the date of the last completed service as your reference point. Keeping that date with the boiler paperwork makes it easier to arrange the next visit and spot missed maintenance.
