Do a Google search of air conditioning blogs or news articles.

Open windows and make sure there is fresh air.

Some will cut LTV if the property is going to be an Air BnB/ STR and some lenders don't mind.2.

I'm under contract for a duplex in Port Richmond.

The taxable income from the LLC passes through to your personal tax return via a IRS Schedule K-1 and you include the income / loss on your personal return. 

The basement meets all the criteria for a dwelling unit in Chicago, but we need to go through the re-zoning process.In addition, we have old R22 forced air units that we want to replace with a heat pump.

You could be below market to the "average" unit in the zip code but if you're in the glide path of the airport with jets are taking off every 5 minutes, the Taco Bell parking lot lights shine right in the windows, freeway exit is two houses away, a busy fire station is nearby with sirens all night long, etc then the price may still be too high.Are there any safety issues that could be helped with lights, cameras, etc?

But none of your fees should be a surprise or up in the air!

We ask them to provide an air quality test done by a licensed company IF we do not see visual evidence. 

I have less than six months before I retire from the Air Force.