NFPA pamphlet #54 prohibits the installation of unvented space heaters in which area?

The correct answer is that NFPA pamphlet #54 prohibits the installation of unvented space heaters in bathrooms due to safety concerns associated with the use of these devices in confined spaces. Bathrooms typically feature high levels of humidity and moisture, which can lead to issues such as condensation. Unvented space heaters produce combustion gases, including carbon monoxide, which can be dangerous in enclosed environments.

The accumulation of moisture from bathing activities can compound the risks associated with combustion byproducts, creating a potentially hazardous scenario. NFPA guidelines emphasize protecting occupants from the risks of harmful gases and ensuring proper ventilation in living spaces. Thus, the regulation against unvented heaters in bathrooms exemplifies the commitment to safety in residential areas where risks can be amplified.