The air handler is the indoor component responsible for pulling warm air across the evaporator coil and pushing the cooled air through your ducts. Conversely, the outside unit, or condenser, is tasked with releasing the heat extracted from your home into the outdoor environment.
Air Handler Running But No Cooling: Why Your Outside Unit Is Quiet
The system is designed to operate in a specific sequence, and if one link in the chain is broken, the outdoor unit will not start. This specific scenario, where the air handler running but outside unit not operating, is one of the most common and frustrating HVAC issues homeowners face during peak summer heat.
Similarly, modern HVAC systems rely on a network of safety sensors. Additionally, if the airflow is restricted due to a dirty evaporator coil or a clogged air filter, the system may overheat and trigger a shutdown, leaving the air handler running but unable to cool the space effectively.
Air Handler Running But No Cooling Outside Unit Quiet
Look for a tripped breaker in the outdoor unit's dedicated circuit and check the disconnect box, which is usually mounted near the unit, to see if it has been turned off. Inside, the air handler rumbles and blows air, but the outside unit remains completely still.
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