Gas heat access is better than electric for example if you have a choice. 

@Tonye Jack Here's a heat map I stole from behind the paywall of the Columbus Dispatch.

When I do get calls, it's for no heat/AC, roof leaks, or maybe a sewage stoppage. 

After purchasing, I removed all the radiators, boilers, and the large oil tank, then installed 2 central heating/cooling system's with air duct's throughout the entire home. 

Then, that winter, the steam heat system froze, and we got a call from a neighbor about a giant icicle hanging off the back of the house.

Landlord shall maintain, and/or repair/replace the plumbing, heating, cooling, electrical systems, and the exterior walls and roof of the Property.

I'd say yes if you were two zone for heating or if you are doing major rehab.  

I have heard of thermostats that you can install that have a minimum temperature setting (say, 50 or 55 degrees F) to automatically turn on the heat even if the tenant doesn't have the heater on, and we'd like to put those in to prevent frozen pipes. 

We are currently in the rehab stage of the property, and we are doing everything ourselves for the renovation excluding the heating and air.

Brand is the heat pump?