electric bill

Why is the electric not in their name?

You agreed to provide a heated apartment, so will have to cover that part of the ConEd bill attributable to the electric heat. I don't know how you'd divvy it among heat, AC, and the rest.

Or it could be that the wall units are supplied with heated water or steam by the building, the cost of which is in your CCs. Then the tenant's electric bill would cover only the cost of running the fan in the wall unit.

Then there're buildings where every apartment has its own water heater. too, so the tenant pays for that as well. In every case the lease has to be modified to fit the apartment's utility situation and is clear about who pays for what.

In my old RS tenement, hot water was included in the rent but heat wasn't. Landlord only had to provide a means of heating (space heaters with chimneys to the old fireplaces) but tenant paid for fuel. That's why the RS rent-increase amounts are different depending on who pays for heat.

Related question: In the "luxury" rental towers that have gone up in this boom and the previous one (by, for example, Related) is the heat generally included in the rent? PTAC or ... what???