Q how much will a replacement boiler cost? Blocked drains can be a nuisance but can be avoided by following these top tips. Fantastic! communicated with us throughout the day until the plumber arrived he was efficient and knowledgable best of all -- he fixed the problem! seamless and easy thank you! We offer hour emergency service and water heater replacements. If you start to faintly smell gas, you should shut down your boiler if the smell of gas is very.