What is the required height for burners and ignition sources above the floor when installing a gas furnace in a garage?

When installing a gas furnace in a garage, safety regulations dictate that burners and ignition sources must be positioned at least 18 inches above the floor. This requirement is primarily intended to prevent ignition of flammable vapors, which are commonly found in garages due to fuels, solvents, and other volatile substances. Keeping burners and ignition sources elevated reduces the risk of fires and explosions by ensuring that they are above the level where flammable vapors may accumulate, thereby enhancing the safety of both the furnace operation and the garage environment.

Understanding the importance of this height requirement can help ensure adherence to safety codes and improved operational safety for gas appliances.