Condensate drain line discharge location. Operation of whole house ventilation fans. Operate if shut-down, out of service, covered, winterized, or when temperature or other conditions may damage components. Evaluate thermostat calibration or operate automatic setback devices, or digital thermostats or controls. Evaluate, calculate, or measure electric current drawn by any unit.
Inspect condensate trays, or discharge pump.
Determine the air flow or cool air production at any location in the structure. Evaluate the pressure or condition of refrigerants or inspect for refrigerant leakage. Inspect gas-fired refrigeration systems. Presence and operation of manual dampers. Smoke staining or scorching.