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The MASTER-BILT 17-09420 is a coil defrost heater designed for commercial refrigeration systems. Rated at 2500 watts and compatible with 208-230 volt power supplies, this heater provides the thermal energy required to clear frost and ice buildup from evaporator coils during scheduled defrost cycles. At 97.75 inches in length, it is sized for large commercial evaporator coil assemblies. This part is installed by commercial refrigeration technicians as part of routine maintenance or component replacement in walk-in coolers and freezers.
This defrost heater is used in commercial refrigeration applications where reliable coil defrost performance is critical. It is identified for use with the SE54-180 unit, a commercial refrigeration evaporator application within the MASTER-BILT product line. Proper defrost heater operation prevents ice accumulation that restricts airflow across the evaporator coil, maintaining system efficiency and box temperature consistency.
Designed as an OEM replacement coil defrost heater for the MASTER-BILT SE54-180 commercial refrigeration evaporator unit.
Installation should be performed by a qualified commercial refrigeration technician. Disconnect all electrical power and allow the evaporator coil to fully thaw before removing the existing heater element. Verify supply voltage matches the heater rating of 208-230 volts before energizing the circuit. Follow applicable local electrical codes and the equipment manufacturer service documentation during installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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