2 family 1 furnace and 1 hwh

[Joe Capobianco]

im looking at a house right now that is currently a 2 family but has only 1 steam boiler which is only 8 years old. there is also only 1 hot water heater as well. it is all natural gas and the previous owner paid for water and heat themselves.

i wasnt sure what others do in this situation from a landlord standpoint.

1. do you raise rents to cover yourself for the winter?

2. there is a full basement and room in attic to add forced air and central ac to the home if needed and just remove the whole steam system itself. 

i have not looked to far into the 1 water heater situation to see how i can separate the piping from unit 1 and 2.

i hope someone has ran into this obstacle before and has a solution. 

thanks in advance