On arrival at a service call the client informed me his boiler smelt funny when run……… yeah, we all know this one….. and its not often good………. choked heat exchanger, overheating……… something nasty anyway…..

I checked it over visualy to begin with…. all seemed ok…….. burner pressure ok, not overheating, flame picture good, FGA readings excellent , heat exchanger clear……. flue ok…….

But it certainly did smell……….

i was about to start checking the electrics when I found this…..

3 years they had been in here………

The tool in question is the guy that left them in here!