The tenants sent me certified letters threating to sue me because of air conditioning problems that I had approved to fix but Renters Warehouse did not work/communicate well with the warranty company.

There is some behind the scene magic (decision matrix for conditional approval) that I won't share publicly, but the standards are still useful for defining your own!

The carpet is 3-5 years old and was in great condition.

A checklist or detailed description of move-in condition is required to deduct anything from the security deposit. 

It was built in the late 1920s but in relatively good condition.

If your never looking at the houses. then your just a lead source and your buyers cant rely on any of your numbers other than basic numbers pulled from data.. but real estate is local and who knows the condition of the property really, when you have not looked at it..

All payment assistance loans come with other conditions and are not recommended.

Warmer weather?

You can even just re-write your new lease for their same rate of rent and expiration date, but with YOUR terms and conditions that apply to you being the landlord.  

Rising temperatures, increased frequency of wildfires, and more severe weather events have heightened awareness about environmental safety.