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Is an upstream regulator required
Universal Hardware Kit: Includes
Always cross-reference your unit's rating plate and serial number to ensure this is the correct fuel conversion path for your specific model
Direct technical cross-reference for the HT36DM434 crankcase heater
CEBD430437-09A) or your specific model number (like 58MXA or 311AAV) to ensure a precise electrical match
Carrier HH18HV160 Limit Switch 323080-701 Is an upstream regulator requiredThe Carrier HH18HV160 Limit Switch is a critical safety component engineered for precise thermal management in residential and commercial furnaces. This OEM Carrier replacement part functions as a high limit safety cut out, specifically calibrated to a 157 160F temperature range to prevent heat exchanger damage and hazardous overheating conditions. Utilizing a highly responsive bimetallic sensor, this auto reset limit switch automatically opens the
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