Norwalk-La Mirada Plumbing Heating & Air Conditioning, Inc. is consistently good. When I call in and tell them what I need, the woman who answers generally can tell me when somebody can come out to do the job. She'll say she will have the service person call and usually within the time frame she says somebody will call, somebody does call and says he will be on his way.
All of the service people are extremely friendly, polite, and knowledgeable and do a very neat job. We've been using their service for at least twenty years. Their staff is very, very polite, very, very friendly, and sometimes humorous.