We haven't discussed it with them yet, but here's the situation.The tenants called us and said their air conditioner doesn't work.

Something new I am starting is leaving small thing of soap, shampoo, conditioner, toilet paper, salt, and pepper for them.  

I think you should contact your local air conditioner contractor.

I am currently purchasing a duplex and inheriting a tenant who doesn't run the air conditioner because "it is a lot cheaper that way." 

Tenants moved in and in first month called me to complain about the air conditioner.

It is not a crime to not provide an air conditioner to your tenant, so you won't be arrested. 

Fully furnished and renovated including new roof, recent F/A furnace, window air conditioner.

Shhhhhhhhh A little secrete from an old timer.........From a bag of water conditioner salt rock place some on top of the soil or within a trench and back fill with earth or pack salt rock granules into 1/2 inch round holes drilled 6" apart through concrete 4" away from foundation footings along area of noted termites entering structure, plug drilled holes afterwords.

We have experienced this over and over where the owners are spending money on deductibles and then we have to send out our maintenance people to fix the problem.Our next problem came in the form of a malfunctioning air conditioner.

Wall space heaters and window air conditioners in some of the older houses.