Duct work and thermostat wiring was in place.

A pellet stove set to a thermostat is the most efficient way to heat a unit that guests can actually understand.

It's a steel tank with a set of elements and thermostats.

You can be thrifty on the other stuff.I have Honeywell 9000 wifi color touchscreen thermostats.

Has database of landlord reportsZipSure (Insurance)QBO, ReceiptBank, HubDocMileIQAdobe SignHappy Inspector (Buildium) - iAuditor is a cheaper alternativeUbiquiti CamerasLeviton WiFi or Lutron Smart SwitchesLeviton Smart PlugsSchlage Encode WiFi Smart LocksButterfly Mx (cloud) or AIPhone - Entry IntercomHoneywell or Mysa electric thermostats, Sensibo for mini-splitsSensors - Flowie, Floodie, Shuttie, Sumpie

Sharing the same refrigerator and thermostat with strangers is a lot easier said than done...

I chose number 2, and found 2 problems....ground wire fell off the shut off switch plus thermostat brokent.

Also, I did the ecobee thermostat thing on a B+ unit and that simple change made it more competitive in the rental market.

The estimated average savings for a Nest Thermostat is less than $200 a year.

The electric space heater is the best option, most will work with a thermostat.