Can this be considered a legitimate business expense?

[Jim Herbst]

I purchased a new air conditioner for my primary residence in the summer of this year. In the fall of this year I purchased a new primary residence and began to rent out my old primary residence. Can I count the purchase of the air conditioner as a business expense even though at the time I was not renting the property? I obviously needed to fix the air conditioner prior to renting the property because central air would be considered a 'must-have' at the price point I was renting at. Any thoughts/comments would be greatly appreciated.