@Jordan Decuir, All other things aside you may only take depreciation on basis once.  

I thought about doing it for a while, but everything seems up in the air right now. 

im considering getting an electric furnace because there once was a forced hot air heating system and the duct work is already installed and there are vents all throughout the house.  

I just recently had an air conditioner condenser unit replaced in June in my California duplex.The bill was for $2200 for a 3 ton with r-22 Freon.The second unit just went out and now I am quoted $2800 for 14 seer 31/2 ton.

I am planning on installing two gas forced air heating systems (about 3k total each).

There are entities that excel at that like KW, but be careful of all the "right to breathe our air" fees.

@Jordan Moser       Jordan,          If you are planning to live in it and rent the other units it seems fine.

all the artwork is here though.) have the front and back doors be across from each other. light will shine all the way through as well as lovely air flow. go with a super pale gray on the walls and crisp white trim. merely sharing what has worked for me in the past; so this is all just food for thought of-course. 

Once the tenants are in residency, enforce your rules - students are not much different than my 5-yr old, make an exception and they assume everything else is now negotiable.Inspect your property at least quarterly - we come in to clean/change filters in the HRV and air-handlers for the heat pumps; check smoke/CO detectors, etc.  

I'm an air traffic controller at the local airport and have about $30K in my TSP account.