One of the tenant won't renew her lease, so I am in the market to replace her.

We link everything in the spreadsheet so if anything breaks or needs replacing, we can reference that sheet and buy the same item.

If for instance the service life is 10 years and they are 5 years old, it seems reasonable to charge their security deposit 50% of the costs of replacing the damaged units.Here is the HUD Service Life list if you are interested:https://www.hud.gov/sites/documents/EUL_FOR_CNA_E_TOOL.PDF Good Luck! 

To facilitate a 1031 exchange where you are deferring 100% of the gain, you would need to purchase a replacement property that is equal or greater in value to the total sale price, less closing expenses.

Not to scare you - but we made one mistake on a flip - replacing old wooden windows instead of rebuilding them - and it ended up costing us $50,000 to our $175,000 profit margin.  

So, making sure the place had air conditioning was very important.Apparently getting a meter panel replacement is not as straightforward as it seems.

You know how many times in 20 years of doing real estate I have heard the sky is falling the fees are too high and so and so company is going to replace brokers and agents because fees are high?

Maybe the contractors on the forums can reply if that can be fixed versus replaced. 

Replacement cost (that day as opposed to last year.), minus amount saved so far, divided by remaining life.

Easy answer - NoThe tenant should be able to cool their unit/home to 70 if they would like, if the A/C will not compete with that and stops working because of that then the landlord will be responsible for fixing/replacing it!