You know that switch on or near your furnace? We'll tell you what it's for (hint: it's power-related) and how to use it.

Is your furnace blowing cold air? Here are some troubleshooting tips and simple DIY repairs for the most common causes for ...

Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...