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Hello and welcome
If there is no air at all blowing through the vents either using the heater or a/c then it's most likely the fan motor that should be replaced, it's fairly easy to remove, it's located below the glove box in the air duct housing and can be removed by taking off the electrical connector and three small screws, it just comes out through the bottom.
You're welcome , other than that it could be a problem with the climate control system which is computerized and may need further diagnosing using a dealer's diagnostic procedures.