Should the service fee be charged for property maintenance heating pipes?

According to the normal regulations, if the repaired heating pipe is a shared part, there is no charge, and if it is used indoors after maintenance, there is a charge. As you said, it is the first time to buy a house for three years, and there is a water leakage problem. This is the quality problem of the heating equipment installed by the developer. Developers or their subordinate properties should be responsible for maintenance free of charge. It is wrong to charge the owner for the spare parts by himself. You can offset or complain to the relevant departments!