My old (2006?) Baxi 105HE combi boiler is going to be serviced, new guy, next week. I skipped last year's service after some disappointing work from the regular guy.
He has said he will do the following:
"Service includes a full strip down and cleaning of the burner and heat exchanger if required. I will also do a gas safe flue emissions check."
What should I be watching out for and what should I be asking?