HI 104: Forced Air Gas Heating


3 Credit Hours

Instant access, online testing and instant results allow you to learn quickly from the comfort of your own home, on your own time.


Ever wonder how a furnace works, or why it doesn’t? Confused about efficiency and life expectancy? What’s the difference between draft air and combustion air? Why are some rooms always cold? This course sheds some light, while avoiding all the complex engineering jargon. Typical of our courses, the illustrations are extremely helpful.