We were having issues with are heating system and not all the radiators were working. Lyons plumbing advised power flushing the system which they did for us. We were very impressed with how tidy they were as they used dust sheets and stair mats to protect our carpets when using the flushing machine. They flushed through each radiator adding chemicals and it has made a massive difference to our house. We have used Lyons Plumbing in the past and would highly recommend them.