The upstairs of the house is on single room that we completely renovated and just finished last month (removed plaster, new electric, insulation, drywall, and new ductless heating and air unit).

All units have natural gas heat (there are 4 furnaces for the 7 units).

I found a very well maintain oil heating condo from 1940's...

Think roofs, old pipes, heat repairs, termite damage etc.

We also argue about how there are many things in the basements that if tampered with could cause a safety issue for them and their neighbors such as the heating and hot water systems.

Put heat pump in and get rid of HVAC 3.

It covers roof, electrical, plumbing, AC/Heat - and you should have some indication that the foundation is problem-free. 

A ¾” pipe needs to be installed on the TPR valve,terminating to the exterior.7) HEATING: The Payne furnace is 29 years old, and is beyond the end of its normal useful life of around 25 years.

Happy Friday,I purchased a property that has gas heat, older version of the newer Rinnai gas heaters.

If the mobile home has a propane tank or oil tank for heating, it can be problematic because tenants may not be able to afford to fill up and use other types of heat sources.