There is no set price to replace your boiler, there are so many factors to take into account, position of existing boiler, gas supply to existing boiler ( if the supply isn’t big enough, the required gas pressure will not be met ). Boiler manufactures offer different warranty’s with the boiler from 2 years to 10 years, which all affect the cost. We don’t do budget boilers, and will not miss anything. We can come round and give our professional advice for free, so give us a call!