I found the listing for AFG on HomeStars when I needed someone to respond quickly. Water was flowing from the pressure relief valve of my boiler, followed by no heat whatsoever. It is not easy to find someone with the expertise and willingness to work on a boiler so I was pleased to see that Rafi does so. Rafi called back within a short time after I left a message and came to inspect the situation that same day. He determined that parts were needed as well as a variety of maintenance procedures and arranged to come the next day to complete the work which included draining the expansion tank, cleaning the boiler, replacing/repairing several valves, bleeding and restarting the system. It is all working perfectly now. I very much appreciated Rafi's quick response, his obvious knowledge, his willingness to explain what he was doing and why and the fact that he did not try to sell me a new boiler. I will definitely call Rafi for the annual tune-up next year and for any problems that might arise in the meantime. I would highly recommend AFG to anyone who wants prompt, honest, professional service.