Gas and oil furnaces burn fuel to provide heat for homes, and that presents a basic problem. Every combustion process ...

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 ...

The primary heat exchanger is the set of serpentine-shaped ... which is made of Schedule 40 PVC and designed for positive-pressure, cooler gas. This PVC exhaust piping is the main visual cue that a ...

Your everyday gas furnace is 80 percent efficient ... The addition of a secondary heat exchanger to extract heat from exhaust is what makes that efficiency difference. Much colder than ...