Saab 340 air conditioning?

A colleague of mine said he flew on a Saab 340 on a hop from Waco to
Dallas. It was a hot afternoon and was hot in the cabin. He said he
was told be a flight attendant that the Saab 340 does not have air
conditioning, only "air handling". That seems incredible to me! Would
a/c even be optional on such an aircraft? If so, would an airline
actually choose to equip without a/c? Could someone here shed any
light on it?

Maybe it was just broken and some misunderstanding or miscommunication
occurred?

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Thanks,
John Clonts
Temple, Texas