Tenant's Rights for Month to Month Lease

[Daniel A. Abreu]

This situation has come to my attention from a friend who was asking what their rights are, and since I don't deal too much with rentals, I wasn't 100% sure how to answer, figured this was a good place to look for advice.

Tenant is currently renting on a month to month lease in St. Petersburg, Florida. The air conditioner has not worked in about 3-4 days. Tenant has called the property manager countless times and written emails regarding the air conditioner. All communications have been ignored. its been consistently in the 90's during the day. Tenant has called a/c repair companies to come out, but no one will without either the property manager or owner's permission (Owner on title is a Land Trust, so no way to find out the individual).

The living conditions are becoming uninhabitable.  What rights does the tenant have in this situation?