Basement installation doesn't make a lick of sense IMHO.Just keep the hot tub at the heated setting for winter months.

If it’s a combination heat/ac unit that runs on the older Freon and just the ac needs replacing.

Onr of my rentals origanally had a floor register for the heat with hardwood floors , I made an inlay pattern out of red oak and white oak . the rest of the floor was white oak . it became the center piece of the room . 

You take every item that will need replacement at some point - water heater, AC, heat, appliances, windows, roof, etc.

They had central heat only.

Can be a challenge when heat is needed for contractors, but the right ones bring portable propane heaters.What specific repairs have you had done to the property?

Fun Chicago Fact - You can use Pex in Chicago for radiant heat flooring and driveways because it is sealed off, but not for interior piping.

Rentals - Median Time to RentMedian time to rent showed 24 days, continuing to fall after the holiday season, showing a heating up rental market.

With fire, we heat our homes, run our cars, cook our food and make smores at the beach. 

**HVAC Systems**: Upgrading or replacing heating, ventilation, and air conditioning systems improves energy efficiency and tenant satisfaction.3.