Toyota Repair: a/c only cold, cold question, toyota camry

Question
QUESTION: 2004 Toyota Camry 4 cylinder 170000 mile.
I had the a/c compressor repaired about a year ago. Now the a/c only blows cold air. Usually not a problem here in south Florida. But I'd like to repair the situation if possible. I've checked under the dash and behind the a/c controls for a loose or bad connection. All seems secure. Any suggestions as to what else I might try? Thanks for your help.

ANSWER: Hello, do you mean that the heater doesn't work? "Now the a/c only blows cold air" I'm a little confused by that statement. Please clarify>

---------- FOLLOW-UP ----------

QUESTION: yes, the heater does not work. The same button that's used to regulate the coldness of the a/c is used to turn the cold air to cool to warm to hot. even when I set that button to full red area(hot) the air stays cold. With the a/c off and the temp set to hot, it blows whatever outside air temp is. On those few cold days when I want warm air, I cannot get it. Thanx

Answer
Thanks for the reply, it uses a vacuum operated servo motor to control the flow of warm air from the heater core, the motor opens and closes a blend door that lets hot air in and blocks out outside or cold air, most likely this servometor needs to be replaced, it is way under the dash on the right side and requires extensive removal of dash components to get to it.