Carrier weathermaker downflow RTU. No economizer single stage Replace 2 - 16x25x2 pleated air filters provided by building tenants, water flush evaporator coil and condenser coil, dislodge and flush evaporator coil drain trap and drain pan, inspect and test run cooling mode, condenser fan motor, compressor operation. I'll equipment is running an excellent condition at this time no other recommended services until heating maintenance Minor maintenance repair to condensate drain trap split open by freezing water in the winter