How often a boiler actually needs servicing

Where boiler service intervals usually comes from

A year of running hours is roughly what it takes for electrodes to wear, filters to collect debris, and minor combustion drift to become measurable. Waiting longer does not usually cause an immediate failure, but it lets small issues compound, and it can affect whether a manufacturer treats a later warranty claim as valid. Heavily used appliances, such as those running constant hot water for a larger household, benefit from staying on the annual cycle rather than stretching it.

Boiler service intervals — the facts that change the job

• Annual servicing matches typical wear-part and combustion drift rates
• Missed services can affect manufacturer warranty validity
• Rental properties have a statutory annual gas safety check regardless
• Oil boilers benefit from servicing before the heating season starts
• A skipped service does not always cause an immediate visible problem

Questions we get asked

Can I service a boiler every two years instead?

Manufacturers generally specify annual servicing, and stretching the interval risks both undetected wear and a weaker position if a warranty claim is needed later.

Does a new boiler still need annual servicing?

Yes — the warranty terms on most new boilers require it, and combustion settings still need periodic verification even on a new appliance.

Where we deal with this

• Burrington (BS40) · 10 mi
• Nailsea (BS48) · 14 mi
• Westwood (BA15) · 10 mi
• Odd Down (BA2) · 8 mi
• Norton St Philip (BA2) · 6 mi