Along with telling the tenant the water heater needs to be replaced, removing it and never replacing it, pulling the outside fuse to the central air in the middle of summer,  turning the gas off at the meter, throwing the main breaker and putting a lock on the breaker box and removing the front door for "refinishing".Gail

We have a 2BR SFH in Rhawnhurst in great condition in central air for 105K with an ARV of 140K and above. 

If you are worried more about "should I do this because I don't want to harm my condensing unit" then an easier source of information is your manufacturer's recommendations, which may be listed online or available for download.If you are worried more about "I want to do it regardless of performance issues but just need to know if I am allowed" then a quick phone call to the code enforcement office Monday or Tuesday (whenever they decide to open) will be better than anything anyone here can tell you (unless, of course, someone in DeKalb County had the same issue they researched).When you call, all you need to do is ask to speak with code enforcement and then ask: "When it comes to building a deck, are there any rules about required clearances above air conditioner condensing units?"

China makes 80% of all air conditioners in the world.  

Although you may eventually get that type of air bnb money, it will probably take you 2+ years.

BUT, 1) give it 3 days to acclimate inside your warm rental 2) be sure to OPEN the box so air can get to the planks while they are acclimating3) if you encounter not-so-stick splices, add adhesive.

I have one friend who has one and is using air b n b to turn a profit on them, since they typically rent for less than the costs of ownership.

Yes, we have 3 air force bases, 1 army base, and hundreds of contractors everywhere.

I agree it's tough to find deals in open air.

When you replace a water heater the drain pipe, the flue and the fresh air intake might have to be modified for the new tank.