Airport Air Navigation Easement will tell you you are in the flight path.

If so there could be some structural issues.I always keep my eye out for window AC units- then their either isn't central air or it isn't performing well. 

You can buy them to hang in closets, and they suck up all the moisture in the air.

@Levi GiafaglioneYou want to plan your travel accordingly.If you plan it property, the air flight, hotel, certain meals and certain local travel(Uber / Taxi) can become deductible.Be mindful that Ohio is a very unique state because many localities have their own separate filing obligations.I.E.

If you are looking to scale in a way that will allow you to use the same money over and over again and acquire more properties, you should look to get a HELOC on your house, find a hard money lender, find a fixer upper in a good air bnb location, contract everything out, use your cash to pay the hard money lender and leave your HELOC untouched for emergency reserves in case you absolutely need it (or are ready to have multiple project going on at a time.)

I have acreage with 2 homes on it and looking to add an ADU as a guest house and Air B&B.

Paul, the upper unit's furnace is in the attic, and blows air down through the ceiling. 

The valve on the very top looks like a valve to bleed the air and I don't believe that valve is necessary since any air in the system can be bled through another location including at the boiler.Cut the 3/4 inch horizontal copper pipe and start with a Sharkbite at that location, eliminate the bleed-off valve, or install a Sharkbite tee for a new valve and get a fitting to reduce the the 1/2 inch PEX.

Cap rates are compressed right now, and mania is in the air. 

The house I am closing on does not have central air.