No cooling, EF error code on thermostat. Found float, tripped due to a clogged drain line. Noticed biological growth build up in air handler, there is no surge protection on system, and a lot of sediment buildup in drain. Gave client solutions for issues with system. Client seemed interested in solutions, however, they want a few days to think about it over and decide which option they want to go with, just wanted to have the drain line cleared for now. Offer the membership, cleared and flushed drain line. Cycled and tested system, checked refrigerant pressures, all is working and operating OK at this time.