How to deal with the heating cost owed by second-hand houses?

First, be clear. What you formed with the original owner is a house sales contract, and you have already registered the transfer. Now you are the owner of the house.

Secondly, the heating company forms a heat supply contract with the original owner (it should be noted here that the contract is between the heating company and the original owner, not between the heating company and the house), so the parties to the contract are the original owner and the heating company, and you are not a party to the contract, so you cannot enjoy rights and will not assume corresponding obligations;

Now, if you want to obtain the heating right, you can re-sign the heating contract with the heating company and pay the relevant fees according to the regulations. The heating fee owed is the debt owed by the original owner to the heating company, which has nothing to do with you;

According to the principle of contract relativity, the heating company should ask the original owner to bear the heating cost owed according to law, not ask you to bear it;

Of course, if you have an agreement on the heating bill in the process of buying a house, then follow the agreement.