Regularly cleaning the air conditioner can extend the life of the air conditioner, prevent dust accumulation on the heat dissipation surface, and eliminate indoor unit odors, helping the air conditioner work more efficiently. When necessary, we will also check the cooling performance of the air conditioner to ensure it is functioning properly. If the drainage hose is too old or accumulates excessive dirt, we will replace it as well. Then we will retest whether the new hose has sufficient slope for proper drainage to avoid rework. After installing each unit, we will immediately turn on the machine to test for water leakage and inspect for any other issues.