Description
Marvair 40099 Belt Type Crankcase Heater Overview
The Marvair 40099 is a belt-type crankcase heater engineered to protect compressors from refrigerant migration and oil dilution during off-cycle periods. By maintaining the compressor crankcase at an elevated temperature, this heater helps prevent liquid refrigerant from accumulating in the oil sump — a leading cause of compressor damage and premature failure. It is a genuine Marvair OEM replacement part, ensuring a precise fit and reliable performance in Marvair HVAC equipment.
Key Features
- Belt-type design wraps securely around the compressor crankcase for consistent, even heat distribution
- Operating voltage: 240 Volts
- Power output: 70 Watts
- Prevents refrigerant migration into compressor oil during off-cycle periods
- Helps extend compressor life and reduce costly service calls
- Genuine Marvair OEM replacement part (SKU: 40099)
- Easy installation — wraps around the compressor body without special tools
Why Crankcase Heaters Matter
During extended off-cycles — especially in cold ambient conditions — refrigerant can migrate to the compressor crankcase and mix with the lubricating oil. When the compressor restarts, this refrigerant-oil mixture can cause slugging, oil foaming, and bearing damage. A properly functioning crankcase heater eliminates this risk by keeping the crankcase warm enough to drive off any refrigerant that may have migrated.
Specifications
- SKU: 40099
- Brand: Marvair
- Heater Type: Belt Type
- Voltage: 240V
- Wattage: 70W
Application
Designed as a direct OEM replacement for Marvair commercial HVAC and packaged terminal systems. Always verify compatibility with your specific Marvair unit model before ordering.
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