Graham Rodd Is your oil boiler on the brink. And I'll supply the repair service you need to set things right again. I have a wealth of expertise and experience to lean on. I value your custom, and would hope you would consider me again after any work I do for you, which is just one of the reasons I like to supply my superb services at a thoroughly reasonable price Makes sure the boiler is running safely and is not leaking Carbon Monoxide, which is a life threatening, highly toxic poisonous gas. Visual check of tank, looking for any weak points.