In a mechanical room of dimensions 12' x 14' x 8' containing appliances rated at 110,000 BTU/h input, does it have sufficient combustion air?

To determine whether the mechanical room has sufficient combustion air for appliances rated at 110,000 BTU/h, it's essential to consider the requirements for combustion air in confined spaces specified by codes and standards such as the National Fuel Gas Code (NFPA 54/ANSI Z223.1).

Combustion air is necessary for the proper functioning of gas-fired appliances, as they require a certain volume of air to ensure complete combustion and to prevent dangerous buildup of carbon monoxide and other combustion byproducts. The volume of air required generally depends on the BTU rating of the appliance and the dimensions of the space.

In this case, the mechanical room measures 12' x 14' x 8', resulting in a total volume of 1,344 cubic feet. The commonly accepted guideline is to provide around 1 cubic foot of combustion air for every 1,000 BTU/h of input. For appliances rated at 110,000 BTU/h, that translates to a requirement of at least 110 cubic feet of combustion air.

Given the total volume of the mechanical room far exceeds the minimum requirement for combustion air, the room actually has enough air available for the appliances. Therefore, it does not meet the criteria to be deemed insufficient for combustion