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The Johnson Controls A421AEC-01 is a high-performance single-stage electronic temperature control designed for heavy-duty HVACR applications requiring precision and environmental protection
1) for specific field derating requirements for installations above 2
Whether you are performing routine HVAC maintenance or an emergency HVAC repair
Precise Control: Highly responsive regulation ensures stable output even during fluctuations in supply pressure
Lennox 75M20 Pressure Switch 320819-301 The Johnson Controls A421AEC-01 isThe Lennox 75M20 Pressure Switch is a critical safety component engineered for high altitude gas furnace applications, specifically calibrated for elevations between 4501 and 7500 feet. This OEM Lennox replacement part, also identified as 75M2001, monitors the inducer motor's static pressure to ensure the combustion air system is clear and operational before allowing the ignition sequence to initiate. With a precise fixed set point of 0. 75" WC (water
US$ 337.50
US$ 1487.50