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HVAC systems can freeze up due to restricted airflow, low refrigerant levels, or a malfunctioning thermostat. When airflow is restricted, the system may not be able to properly circulate air, leading to ice buildup. Low refrigerant levels can also cause the system to freeze as it affects the system's ability to absorb heat. A malfunctioning thermostat can cause the system to run continuously, leading to excessive cooling and potential freezing.

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4mo ago

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