Description
Lennox 93M04 Belt Type Crankcase Heater Overview
The Lennox 93M04 is a belt-type crankcase heater engineered to protect compressors from refrigerant migration during off-cycle periods. By maintaining the compressor oil at an elevated temperature, this heater prevents liquid refrigerant from accumulating in the crankcase — a leading cause of compressor damage and premature failure. It is a reliable OEM-quality replacement designed to meet Lennox system specifications.
Key Specifications
- SKU: 93M04
- Type: Belt (Wrap-Around) Crankcase Heater
- Voltage: 240 Volts
- Wattage: 40 Watts
- Compatible Compressor Diameters: 6″ and 7-1/2″
- Lead Length: 48 Inches
- Brand: Lennox
Features & Benefits
- Belt-style design wraps securely around the compressor shell for consistent, even heat distribution
- Dual-diameter compatibility (6″ and 7-1/2″) offers versatile fitment across multiple compressor sizes
- 240V operation suits standard commercial and residential HVAC electrical configurations
- 40-watt output provides efficient, low-energy compressor protection during off cycles
- 48″ lead length allows flexible routing and easy connection to the control circuit
- Prevents refrigerant migration and oil dilution, extending compressor service life
- OEM-quality construction ensures reliable, long-term performance in Lennox systems
Application
The Lennox 93M04 crankcase heater is ideal for use in air conditioning and heat pump systems where compressor protection during shutdown is critical. It is particularly important in climates where ambient temperatures can drop low enough to allow refrigerant to migrate to the compressor crankcase. Always verify compatibility with your specific Lennox equipment model before installation.
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