Which minimum vertical clearance above the floor is required for a heater installed in a public garage?

Which minimum vertical clearance above the floor is required for a heater installed in a public garage?

• A. 6 feet
• B. 8 feet
• C. 10 feet
• D. 12 feet

Answer: (B)

In garages that are open to the public, safety relies on keeping heat sources away from floor-level hazards. Gasoline and other flammable liquids often sit or spill on the floor, and their vapors tend to stay near the bottom. By locating a heater with a minimum vertical clearance of eight feet above the floor, the hot surface is kept well above most floor-level vapors, reducing the risk that vapors could reach ignition sources. It also helps protect the unit from damage or accidental impact from vehicles and allows space for maintenance and proper ventilation around the heater. For these safety and practical reasons, eight feet is the required height.

In garages that are open to the public, safety relies on keeping heat sources away from floor-level hazards. Gasoline and other flammable liquids often sit or spill on the floor, and their vapors tend to stay near the bottom. By locating a heater with a minimum vertical clearance of eight feet above the floor, the hot surface is kept well above most floor-level vapors, reducing the risk that vapors could reach ignition sources.

It also helps protect the unit from damage or accidental impact from vehicles and allows space for maintenance and proper ventilation around the heater. For these safety and practical reasons, eight feet is the required height.