The reason is because closing costs are not(by law) allowed to exceed a certain percentage, and under $35k it automatically does, because most banks closing costs are set.

You could try to isolate the central air value by running multiple sets of comps where the only difference is central air.  

Here are some good places to start: http://www.biggerpockets.com/meet- find and connect with other BP members that are in your area.http://www.biggerpockets.com/alerts - Set up keyword alerts to be notified of the topics that interest you.And, of course thehttp://www.biggerpockets.com/forums - ask any question about real estate!

Some potential drawbacks to keep in mind are:Additional closing and loan origination costs (two transactions/mortgages instead of one) - speak to your lender and title company about costsTwo insurance policies instead of one - probably close to double the insurance cost as compared to a duplex - get a quote from a good insurance agent and compareTwo sets of property taxes instead of oneThese certainly aren't deal killers, and the benefits noted above may outweigh the disadvantages.

Set up keyword alerts for the areas you want to work in and see who is posting about those areas and message them.

I just had a property turn over and followed this procedure for the showings:I advertise the property and handle all calls, emails, texts on it and set up viewing appointments (I group them all within 30-45 minutes on one day)The current tenants show the property to prospective rentersWhen someone applies, they email or fax in the application and pay the application fee via PayPal (although I am now trying out Cozy for applications) and I process the applicationIf the application passes, I prepare and email over the lease for signatureWhen the lease is signed and sent back to me, I send over a payment request for the first month's rent (via Dwolla or Cozy)At the check-in, I drive to the property to check them in myself and collect the security deposit in secured funds (or use Cozy to collect it beforehand)I have been doing the above for a long time and it has worked pretty well.

Hi everyone I have set a goal to purchase my first investment property in December of this year.

But once you get started, do not let set backs deter you from your goal.Good luck. 

I am not trying to throw cold water on your plan, but be sure you understand the risks involved before investing.

Chase set it up with the Federal tax ID bus would not allow me to sign as president.