Neither the AC nor the heater produces any conditioned air — no cold, no warm, sometimes no airflow at all. This points to a shared fault: power, blower, or controls.
Find a ProviderWhen both heat and AC fail together, the cause is usually shared — power (a fuse), the blower, or the control module — rather than the cooling or heating parts themselves.
Technicians check fuses and the blower first, then the control module and wiring, to find the common point of failure quickly.
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