How does a furnace work its magic on a cold winter day? A household furnace supplies heat by burning a fuel-natural gas, propane and fuel oil are the most common-to warm air that is transferred to other parts of the house.
How Does A Furnace Work To Heat Your Home?
Although the process of applying flame to heat the air may seem simple, modern furnaces use a number of techniques to make the process safe and efficient. Here's how it works: