Maybe it's a great situation to tap off your existing split-system (if you have a forced air system), depending on existing furnace btu capacity and condensing coil tonnage.

There had been many times prior when subway cars would sit in one spot for hours between stops on multiple occasions, due to 'police investigations' etc, often full of people including myself opening the mini windows trying to get some air in, as our breathing condensed on the glass and metallic surfaces all around.I do hope somehow the traffic control keeps up with Downtown LA's ongoing development into a megacity the likes of NYC.My hope was to move cross country for more space and higher quality of living despite both LA & NYC being such densely population areas.

It's cheaper and you won't have to deal with condensate line.

and generally mid west shops are cheaper than west coast.. just make sure you compare apples to apples.. and get what you need.1. wind and hail2. what happens when my property is vacant for two months or more3. vandalism and theft.. what happens and whats the deductible when someone steals my condenser unit or breaks in and steals all my appliances water heater and copper.those types of things you want to know up front as your buying in a area that will that any of the above could happen to you...

If anything, you should come up with your own rental application rather than use the GBREB form, which is too condensed and doesn't ask for enough.  

A modern, direct-vented, condensing hot-water heater will have an annual fuel utilization efficiency (AFUE) rating  >90.   

However, the condensation thrown off from a hot water heater and boiler requires individual piping run within the chimney to avoid damage to the mortar, flue, and integrity of the chimney.  

If you have a legal adviser or Attorney that you work with they would be able to help construct a condensed version for your needs and help with the clauses that your speaking about.

If fans become clogged with dust build up or other debris (our AC condenser was home to a giant mud dauber nest one year...!)

I suspect I have substantial energy losses because of it, but even worse, humid Summer weather is closing in and I bet I'll get water condensate like crazy.So, I'd like to insulate this ductwork.