One of the reasons I don't do a lot on the oil side, is that I don't carry the spares. You need to carry about £250 worth of nozzles to turn up and have a a half decent chance of having the right one on board. New hoses too.
So if and when I service an oil boiler, I'll tend to pop in check what the nozzle is (normally by looking at the old one the previous engineer left) and then pop to the merchants and pick one up.
I prefer gas servicing if I'm totally honest. I charge a bit less, but it's easier.
If you don't check the baffles, change the hose, and nozzle, I think it's hardly worth it.
So if and when I service an oil boiler, I'll tend to pop in check what the nozzle is (normally by looking at the old one the previous engineer left) and then pop to the merchants and pick one up.
I prefer gas servicing if I'm totally honest. I charge a bit less, but it's easier.
If you don't check the baffles, change the hose, and nozzle, I think it's hardly worth it.