Combustion furnaces, water heaters, and dryers, whether fueled by natural gas, oil or coal, all require a source of ____________________ to burn fuel efficiently and produce heat.

Question

Quizplus · Accepted Answer

The Answer of Combustion furnaces, water heaters, and dryers, whether fueled by natural gas, oil or coal, all require a source of ____________________ to burn fuel efficiently and produce heat.

Combustion Furnaces, Water Heaters, and Dryers, Whether Fueled by Natural