Is the absence of combustion air in the bottom of the closet a required reporting deficiency? Is a screen combustion air opening a required reporting deficiency? Is the proximity of the return to the gas fired appliances a required reporting deficiency?
Section 535.230(2)(J)(vi)(I)of the Standards of Practice requires inspectors to report as deficient, in gas HVAC units, deficiencies in combustion, and dilution air. None of the issues you listed would necessarily be required to be reported as deficiencies; this determination depends on several factors, such as the design of the system.