Who is responsible for the leakage of air-conditioned seat floor drain?

Legal analysis: It depends on the cause of the leak. If it is caused by housing quality problems, the developer is responsible for maintenance and compensation for losses (note that the quality warranty period for roof leakage is 5 years). If it is the owner's fault, the upstairs owner shall be responsible for the maintenance and compensate the losses according to law.

Legal basis: Article 44 of the Regulations on Property Management. Within the property management area, water supply, power supply, gas supply, heating, communication, cable TV and other units shall charge relevant fees to the end users. Where a realty service enterprise accepts the entrustment to collect the fees mentioned in the preceding paragraph, it shall not collect additional fees such as handling fees from the owners.