Came to perform duct cleaning upon system. We ran drop clothes through out the house. We tied duct cleaning equipment into system . We proceeded to remove scrub and clean all ducts and registers. We also installed a new pure Air UV light to purify the air along with a 20x24x4 filter. We cleaned and scrubbed the evaporator coil upstairs with cleaner and a demolding agent. We applied pan treatment and cleaned the blower wheel assembly. We patched all ductwork and sealed openings. We installed a new wet switch. We checked all functions of the unit everything is operational at this time.