Hey @Ryan Brown - in this instance, I think you should turn up the heat in terms of what the tenant is allowed and not allowed to do. 

@Anthony Vander Meer Does the rent include electricity, heat or hot water?

@Karolina Powell I’m a huge fan for tenants paying their own heating.

That can get a little heated depending on the bank/lender.

For example with heat, the fuel (electric, oil, natural gas, etc) all cost differently. 

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

I always look at the heating source and try to determine if it can be broken out to where the tenants pay for their own heat.

For 20 years we have dealt with space heaters (of various types) for heating the room in the cold OH winters, or just ceiling fans for cooling in the summer.

The heat lol

Duplexes have more appliances (2 kitchens and two heating/AC units) so that is a disatvantage but a used appliance can be fixed in an hour, a hole in the wall take a lot more time.