My large radiator in the kitchen hadn't worked at all for over two years. It was blocked by a previous plumber who did a bad job, the rest of the radiator were then barely warm, . I've had two other plumbers who have tried to fix the problem but couldn't. My Rightio plumber was determined to fix the problem. He endlessly worked getting to the route of the problem. After tracing the blockage back he fixed not only the kitchen radiator but all the radiators. They all work brilliantly now! I can't praise him enough for working out the problem, fixing the problem quickly and efficiently. I couldn't be happier with his work, he was also friendly, courteous and told me and showed me throughout what he was doing. Sandra Marshall