AC And Heat Not Working At All
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 TechnicianCommon causes
- Blown main HVAC fuse
- Failed blower motor (no airflow at all)
- Climate control module failure
- Wiring or ground fault
- Control panel completely dead
Frequently asked questions
Why is the whole climate system dead?
When 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.
Where do you start the diagnosis?
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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