yes, my guess is also the warm moist air is traveling to the cold concrete and condensing there on the carpet.

This will also help with Condensation during the Winter.  

Hi Hunter,HUD says an HVAC Condenser has a service life of 15 years.https://www.hud.gov/sites/documents/EUL_FOR_CNA_E_TOOL.PDFHow I calculate it:15 (minus) Age of old unit = years of service left (if a negative number it is zero).

I have an orientation packet (that I've been condensing over time).

That moisture is going to end up condensing somewhere and may cost a lot in dry rot repair.

Who knows when the blower motor in the HVAC will burn up or if a kid mowing the lawn hit the condenser hard enough to crack a joint in the line, pressure drops and causes damage?

Since the payoff timeline is so condensed (5 years in your case), even if the world went nuts and rates shot up, it wouldn't change your payoff by more than a matter of months.

Too easy to create a hazard either from protruding into a walkway where someone will injure themselves on it, or it will be draining condensate onto the sidewalk that they do not clean, creating a slip/fall hazard.

I would have to know all of the details of this property to fully understand the consequences, but the condensed answer is that you have a long-term capital gain taxed at either 15% or 20% (add 3.8% for additional Medicare in the 20% bracket). 

Sediment traps are intended to trap oil, scale, water condensation and/or debris from the gas supply lines before they reach and damage the water heater components.