Description
The Reznor 123974 fan switch is designed to control fan operation in compatible Reznor gas‑fired HVAC equipment. Rated at F135‑30F and supplied with a mounting bracket, this switch activates fans based on temperature, helping ensure efficient airflow and system performance. Manufactured to OEM specifications, it is an essential replacement component for reliable heater operation.
Key Features
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Fan switch rated F135‑30F with included mounting bracket
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Controls fan operation based on temperature conditions
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OEM replacement for compatible Reznor HVAC equipment
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Supports efficient airflow and heating system performance
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Durable construction for long‑lasting reliability
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Ideal for repair, maintenance, or replacement applications






