When your air conditioning system fails to blow air with sufficient strength, it is usually struggling against high static pressure restrictions or experiencing fan performance issues. The primary culprit is typically a dirty, clogged air filter that starves the indoor blower motor of air. Another major cause is a frozen indoor evaporator coil encasing itself in ice due to low refrigerant levels or restricted airflow, which completely chokes off the air passage. Additionally, a failing blower motor capacitor, slipping fan belts, closed balancing dampers, or crushed flexible duct runs can severely reduce air velocity. You can troubleshoot by inspecting your filter and checking the indoor unit for ice. You can verify that normal operation is restored when replacing filters, thawing coils, or repairing duct restrictions returns powerful airflow.
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