06/08/2026
Importance of full strip and clean servicing.
At regular intervals a boiler really needs a full strip and clean service and gasket seals need to be replaced. Some boiler manufacturers recommend a certain minimum period as the seals need to be replaced when removing the boiler. The above image is a Vaillant on a 5 year interval. Some boilers like the viessmann range can be stripped and cleaned every year as the seals don't necessarily need to be replaced everytime the burner is removed.
Without taking the burner out at points the heat exchanger will get fouled to the point where operation is comprised.
Only point this out as some bigger national companies are pushing out servicing jobs on a discount, some less than £80, I can honestly say you won't get a thorough service from a these setups, check what you are getting before committing, look through your service history and your boiler manual to see what needs to be done at certain points, at least that way you know you will be getting value for money and actually be prolonging the boilers life!