What type of room heater may be installed in a bathroom?

A direct vent heater is the appropriate choice for installation in a bathroom due to its unique design that ensures safe operation in areas prone to high humidity and moisture. Direct vent heaters draw air from outside for combustion and expel exhaust gases back outside, creating a sealed system. This eliminates the risk of dangerous combustion gases entering the living space, which is critical in the confined environment of a bathroom.

In contrast, natural draft heaters rely on natural airflow and the chimney effect to ventilate combustion gases, which may not be effective in a bathroom where space constraints and airflow issues are common. Similarly, direct fired and forced draft systems do not provide the same level of safety in a humid environment, as they can introduce risks related to gas leaks or improper venting. Hence, direct vent heaters are the safest and most efficient option for heating in a bathroom setting.