Air Current Inc we have been using for many years now. They had actually installed our furnace system. This last time they came out they restored the heat for us. The technicians replaced a couple of items on the exterior of the home and the heat was soon up and running. We are very pleased! We used them twice for emergency services and they were right there when we needed them. Very dependable. The techs are very knowledgeable and polite. It is always easy to set up an appointment with the office too. We highly recommend using Air Current Inc.