Set up an appointment with one of our technicians! call today! This short video from british gas explains the different. That said, there are some simple steps you can take to maintain your boiler keep reading to find out what you can do before you have to pay out for a heating engineer to fix or properly service your boiler. Ewwwww that smell can you smell that smell?? As a stocking distributor and representative for babcock & wilcox and superior boiler works, we keep a wide.