Where are fuel-fired water heaters not permitted to be installed?

Fuel-fired water heaters are not permitted to be installed in closets due to safety and operational considerations. Closets often lack adequate space for ventilation and proper clearance, which are essential for the safe operation of these heating appliances.

Fuel-fired water heaters generate combustion gases that need to ventilate properly to prevent the buildup of harmful fumes, like carbon monoxide. If installed in a closet without adequate airflow, the heater could operate inefficiently, increasing the risk of overheating or creating a dangerous environment.

In contrast, basements, attics, and garages often have more space which allows for proper installation practices, including necessary clearances and ventilation. These areas can be designed to accommodate water heaters safely, in accordance with building codes and manufacturer specifications.

Therefore, the installation of fuel-fired water heaters in closets is restricted to ensure safety and compliance with building regulations.