Free Power Flush When You Install a Boiler With Us! HELLO WELCOME TO MM HEATING LTD. This offer is for power flush.The flush will be carried out by one of our friendly gas safe registered engineers. Monday Friday [09:00AM 06:00PM] Sat & Sun [10:00AM 04:00PM]. Thanks for checking us out! The item "Power Flush Central Heating System From. 0% Finance Available" is in sale since Friday, June 17, 2016. This item is in the category "Home, Furniture & DIY\DIY Materials\Plumbing". The seller is "mmheating" and is located in london, London. This item can't be shipped, the buyer must pick up the item.