Arrived to thermostat set to cool 60 reading 66. Manager informed me that they had issues with A/C and heat. Went to outdoor system and found the disconnect was in the off position. Turned disconnect to on and tested system. Refrigerant pressures and temperatures are appropriate for indoor and outdoor weather conditions. However was getting a low load on evaporator fault. Checked evaporator coils and found that they are dirty, system does not have a filter causing unfiltered air to pass through the system. Checked blower wheel and blower has light amount of dirt. Talked to manager she decided to do indoor coil cleaning and 2 system maintenance. DCM2: AC complete, installed 20x24x1 and 20x20x1 filters. Gym system is cooling at this time however indoor coils and blower wheel are both dirty causing indoor pressures to be lower than expected, system had a filter however it was the wrong size leaving about a 4in gap allowing unfiltered air to be cycled through the system. Will need to cl