I like one of the suggestions that bryan had in terms of buying and renting all three units out. 

You might uncover some overlooked pockets or investment opportunities that aren’t on your radar yet!

Joining Bigger Pockets hoping to accelerate my learning process and meet like minded individuals.

Scott's book here at Bigger Pockets, that will give you basics.  

I would honestly call three HVAC people to come take a look at it and give you some answers along with pricing.

Bigger pockets also have webinars on how to choose a market to invest.

I remember listening to on of the bigger pockets podcasts and it was the first time I heard rent by the room strategy work really well.

Most of the time, you can purchase a property with tenants already in place, but the leases often need to expire within a certain timeframe—usually around three months—so you can establish owner occupancy.

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Welcome to Bigger Pockets Maria!