I arrived on site to perform a tune up on a Carrier 16 SEER 2 Ton Air Conditioner and a Carrier 96% Two-Stage 60,000 BTU Gas Furnace. I cleared the debris build up in the unit and recommended that the furnace filter should be replaced. The customer was concerned about water damage so I gave him options as to how to protect his furnace from it. Both units were running at full functionality upon departure.