i have heat in summer and ac in winter whats wrong with my ford

The windows may be down. Roll them up.

Check your fuses. I drove without heat for 4 years. Went to replace the blend door actuator and the old one worked after we tore apart the dash. I had a blown fuse. Go through your owners manual because there are several fuses that tie into the heating system. I had already had the radiator replaced, the heater core flushed and had several certified mechanics look at it