What Types of Fuel Can Be Used by a Furnace’s Heat Exchanger? There are several types of fuels that a heat exchanger can use to create heat. Natural gas is most common however, liquid propane ...

Derived from the Latin word fornax, meaning oven, a furnace ... gas from building up dangerously if the igniter fails, flame detectors shut off gas flow if no heat is detected. Heat exchanger ...

are indicated by British Thermal Units (BTUs). Generally, the more BTUs your furnace has, the more you can expect to pay for a heat exchanger since larger furnaces require larger heat exchangers.

Replacing the old furnace in your central heating system with a new, more efficient model can offset volatile energy prices. (So far, it’s predicted that fuel costs will go up this winter.

As a result of that quick blurb, I received many reader questions about those furnaces. So let’s dive into the issue a bit deeper. Your everyday gas furnace is 80 percent efficient. It loses 20 ...

A natural gas furnace works by igniting natural gas inside of your furnace's burner. The flames heat up a metal heat exchanger, which in turns heats incoming cold air received from your home's ...