Some of those round thermostats still have an on/off switch, and some are AC/heat so the tenant could flip it to AC to keep heat off But I second the other point @George Paiva made - how can you be certain the heat isn't on?

You’re not going to find a safe way to do what you want unless you or the “buyer” has enough cash to pay off the note. 

Would love to connect and share insights on building a hands-off, cash-flowing portfolio!

If they are, I would pay them off first.I would invest in a different market(likely bigger market) where you can find reliable contractors or find a PM that will be able to manage the properties.

Crexi, Loopnet are probably the two biggest but why not work with an agent that can present you with multiple off market and listed deals?

He is great with investors and can find deals that cash flow much easier, including some off market stuff.

I'd start the refinance process right away, or just pay it off, or sell. 

I also kept my first home and it is paid off now and worth approximately $150k, with current renters. 

I would greatly appreciate any guidance or advice starting off with this business model.

Sorry, he just ticks me off.