Room heaters shall not be installed bathrooms or bed rooms unless they are direct vented

• A. Electric only
• B. Direct vented
• C. Gas-fueled
• D. Remote controlled

Answer: (B)

The safety principle here is that in small, occupied spaces like bathrooms or bedrooms, a gas-fired room heater must not rely on room air for combustion or release combustion gases into the room. A direct-vented unit draws its combustion air from outside and vents all exhaust directly to the outside, keeping the room’s oxygen level stable and preventing carbon monoxide or other combustion byproducts from entering the living space. That’s why the correct choice is the one that specifies direct venting. The other options don’t address venting: electric heaters aren’t part of this gas-venting requirement, merely labeling a heater as gas-fueled doesn’t ensure safe venting, and remote control has no impact on how the heater vents combustion products.