Gas and oil furnaces burn fuel to provide heat for homes, and that presents a basic problem. Every combustion process produces noxious gases. How do you keep those gases from circulating throughout ...

Although the combustion analyzer doesn't measure them, proper ventilation/infiltration air, sufficient combustion air, and a safe heat exchanger are critical to ...

Is this the year you’ll finally replace the old smoke-belcher with a high-efficiency furnace? Even if you don’t go that far, there are many steps you can take with the old furnace, fireplace or ...

Shopping for a gas furnace? Read about types, features, and other must-know topics in our gas furnace buying guide to make an ...

The main job of a furnace filter is to keep big stuff from getting in to the furnace heat exchanger or the air conditioner air coil and clogging things up with dust, pet hair, Barbie doll heads, and ...