Q how much will a replacement boiler cost? Was very pleased with the job that was done would use them again”. Sign up to be the first to hear about our amazing offers, events and competitions! it's real easy! Do you stick the plunger on the wall or the floor :whistling. How do i use drain out bathroom on an extra tough clog or floor drain? It's possible to take the plume away using an additional pipe called a plume management kit. Most boilers may need to be replaced after.