I have been using Red Line Heating & Cooling since 2002. They came out just last week to check my hot water heater and discovered that it needs to be replaced. They are currently working on a bid for me. They have very nice people there. Good customer service. The guy that comes out is always very professional and friendly. They also installed a new furnace for me and recharged the air conditioner. I like their service and will keep using them. I do recommend them to others.