Check the dates on the water heater, furnace, and air conditioner.

My air conditioner has stopped working.

If it's the former, I would do the repair as, in my opinion, windows that have ratty or missing screens make the whole house look terrible and it's an issue if the tenants want to open a window to catch a cool breeze rather than run the air conditioner (behavior which should be encouraged, in my opinion).I think the larger question is why, when there are so many properties in the country that cash flow really well, why you're hanging on to one that does not.  

A: "Oh, I don't actually live here, I'm just staying here for a few weeks with a friend"A: "The seller just asked me to stay here because people kept breaking in and vandalizing the place, that's why the appliances are gone"A: "I love all the neighborhood pets, but I absolutely hate the business next store because their air conditioner squeals when it runs ALL SUMMER!"

Goodman 1.5 Ton 13 SEER Air Conditioner Condenser w/ R410A Refrigerant Model#: GSX130181  $623.99 Goodman 1.5 to 2 Ton 17 1/2" Air Conditioner Evaporator Cased Coil Model#: CAPF1824B6 $197.89

One house may be in better condition, especially high cost items like the roof, air conditioner, etc.

I am in a spiraling beehive, air conditioner, roof, drywall, electrical saga right now and I have to keep reminding myself that 'this isn't stress, it's my job'.

& different parts of the asset can be depreciated on different schedules.To find out the useful lifespan of each component, you do a cost segregation study to analyze all of the parts.The raw land can't be depreciated so you start by giving that a value first.But other items can be depreciated on a quicker timeline.A roof, road, sidewalk, fencing, walls, gates, doors, latches, flooring, air conditioners, pavers, curbing, landscaping, etc.The IRS has a depreciation schedule for each type.Some parts are 5 yrs.

The only thing Im not so sure about is the communal large bottles of shampoo and conditioner left in the shower.

Air Conditioner ?