Air conditioning in Las Vegas in the summer is a definite habitability issue. NRS 118A.290 defines habitability of a dwelling unit and includes air conditioning (as long as the unit had air conditioning when leased) as a habitability issue. If the unit is thus rendered uninhabitable, you may withhold rent, and deduct the amount of rent for the days of uninhabitability from the next month's bill. In your position I would inform the landlord of that intention, along with a printout of that section of the NRS, as I suspect you'd rather have a working air conditioner than the rent rebate.
Answered on Jun 18th, 2012 at 9:10 PM