We refer to what some people might refer to as a squirrel cage blower wheel as a forward-curved centrifugal fan. Depending on usage and the residence, blower wheels typically need to be retrieved and cleaned every 3 to 5 years. Your HVAC system's airflow can be significantly impacted by a dirty blower wheel, which could lead to an overheated heat exchanger and frozen AC coils. Additionally, it will make your blower motor and system as a whole less efficient.
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