replaced A/C dash switch still no cool air

no cool or no air blowing out?

It could be the transistor relay behind glove box. or a relay near the steering wheel or make sure all the plugs are connected to the new switch. But first check the blower. disconnect plug and run a separate wire from hot post to the plug that is on blower. make sure you have a negative ground attached at same time. Its a process of illimination Recently had the same problem and fixed it myself.