Hello, when running the heater fan, there is a slight chirping noise and the noise increases on faster speeds. This happens with AC on or off. I’m thinking it’s the bearing of the fan behind the glovebox. Is there a known repair or will it be a swap out of the fan? Many thanks 

Had same issue with car, ran it max speed for a bit and it cleared, suspect tree light debris had got in, noise at low speed was light.