
Lennox 15X40 Heater
The Lennox 15X40 Crankcase Heater is a critical OEM component designed to prevent refrigerant migration and oil dilution in high-side HVACR systems. Operating at 240V and 40W, this heater maintains the compressor lubricant at a temperature higher than the coldest part of the system, ensuring optimal viscosity and immediate lubrication upon startup. This belly band crankcase heater features a flexible diameter range of 6.4 to 8.5 inches, making it compatible with a wide variety of Lennox 15X40 replacement applications and various compressor housing sizes. By mitigating the risk of liquid slugging during outdoor ambient temperature drops, this 40-watt compressor heater protects internal valves and bearings from premature fatigue. For field technicians, utilizing this Lennox 100499-22 heater during routine maintenance or retrofits ensures your equipment remains within manufacturer specifications for cold-weather performance. Its rugged construction is built to withstand rigorous on-off cycles, providing the thermal stability required for demanding residential and commercial condensing units.
Key Benefits- Prevents Liquid Slugging: Maintains consistent oil temperature to keep refrigerant from condensing in the crankcase during the off-cycle.
- Extended Compressor Life: Reduces mechanical wear by ensuring oil remains at the correct viscosity for instant lubrication.
- OEM Precision: Guaranteed fit for popular models such as XP14-042 and SL18XC1, eliminating the need for generic modifications.
- Versatile Fit: Adjustable belly band design accommodates compressor diameters from 6.4" to 8.5" for broad system compatibility.
- High-Efficiency Output: Delivers a steady 40W of heat at 240VAC to provide reliable frost prevention without excessive power draw.
How do I confirm if the Lennox 15X40 fits my compressor?
This heater is designed for compressors with a diameter between 6.4 and 8.5 inches. Verify your compressor's shell dimensions or refer to your unit's parts list for the 15X40 or 100499-22 part number.
Does this heater require a thermostat for operation?
While the heater provides constant wattage when energized, many Lennox systems utilize a crankcase thermostat (S40) to cycle the heater based on ambient or liquid line temperatures for energy efficiency.
What happens if the crankcase heater fails in cold weather?
Failure to maintain oil temperature allows refrigerant to mix with the oil, leading to "foaming" at startup. This lack of lubrication and potential for liquid compression can cause catastrophic compressor failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $48.49
-65%$48.49
$16.97Lennox 15X40 Heater
The Lennox 15X40 Crankcase Heater is a critical OEM component designed to prevent refrigerant migration and oil dilution in high-side HVACR systems. Operating at 240V and 40W, this heater maintains the compressor lubricant at a temperature higher than the coldest part of the system, ensuring optimal viscosity and immediate lubrication upon startup. This belly band crankcase heater features a flexible diameter range of 6.4 to 8.5 inches, making it compatible with a wide variety of Lennox 15X40 replacement applications and various compressor housing sizes. By mitigating the risk of liquid slugging during outdoor ambient temperature drops, this 40-watt compressor heater protects internal valves and bearings from premature fatigue. For field technicians, utilizing this Lennox 100499-22 heater during routine maintenance or retrofits ensures your equipment remains within manufacturer specifications for cold-weather performance. Its rugged construction is built to withstand rigorous on-off cycles, providing the thermal stability required for demanding residential and commercial condensing units.
Key Benefits- Prevents Liquid Slugging: Maintains consistent oil temperature to keep refrigerant from condensing in the crankcase during the off-cycle.
- Extended Compressor Life: Reduces mechanical wear by ensuring oil remains at the correct viscosity for instant lubrication.
- OEM Precision: Guaranteed fit for popular models such as XP14-042 and SL18XC1, eliminating the need for generic modifications.
- Versatile Fit: Adjustable belly band design accommodates compressor diameters from 6.4" to 8.5" for broad system compatibility.
- High-Efficiency Output: Delivers a steady 40W of heat at 240VAC to provide reliable frost prevention without excessive power draw.
How do I confirm if the Lennox 15X40 fits my compressor?
This heater is designed for compressors with a diameter between 6.4 and 8.5 inches. Verify your compressor's shell dimensions or refer to your unit's parts list for the 15X40 or 100499-22 part number.
Does this heater require a thermostat for operation?
While the heater provides constant wattage when energized, many Lennox systems utilize a crankcase thermostat (S40) to cycle the heater based on ambient or liquid line temperatures for energy efficiency.
What happens if the crankcase heater fails in cold weather?
Failure to maintain oil temperature allows refrigerant to mix with the oil, leading to "foaming" at startup. This lack of lubrication and potential for liquid compression can cause catastrophic compressor failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Lennox 15X40 Crankcase Heater is a critical OEM component designed to prevent refrigerant migration and oil dilution in high-side HVACR systems. Operating at 240V and 40W, this heater maintains the compressor lubricant at a temperature higher than the coldest part of the system, ensuring optimal viscosity and immediate lubrication upon startup. This belly band crankcase heater features a flexible diameter range of 6.4 to 8.5 inches, making it compatible with a wide variety of Lennox 15X40 replacement applications and various compressor housing sizes. By mitigating the risk of liquid slugging during outdoor ambient temperature drops, this 40-watt compressor heater protects internal valves and bearings from premature fatigue. For field technicians, utilizing this Lennox 100499-22 heater during routine maintenance or retrofits ensures your equipment remains within manufacturer specifications for cold-weather performance. Its rugged construction is built to withstand rigorous on-off cycles, providing the thermal stability required for demanding residential and commercial condensing units.
Key Benefits- Prevents Liquid Slugging: Maintains consistent oil temperature to keep refrigerant from condensing in the crankcase during the off-cycle.
- Extended Compressor Life: Reduces mechanical wear by ensuring oil remains at the correct viscosity for instant lubrication.
- OEM Precision: Guaranteed fit for popular models such as XP14-042 and SL18XC1, eliminating the need for generic modifications.
- Versatile Fit: Adjustable belly band design accommodates compressor diameters from 6.4" to 8.5" for broad system compatibility.
- High-Efficiency Output: Delivers a steady 40W of heat at 240VAC to provide reliable frost prevention without excessive power draw.
How do I confirm if the Lennox 15X40 fits my compressor?
This heater is designed for compressors with a diameter between 6.4 and 8.5 inches. Verify your compressor's shell dimensions or refer to your unit's parts list for the 15X40 or 100499-22 part number.
Does this heater require a thermostat for operation?
While the heater provides constant wattage when energized, many Lennox systems utilize a crankcase thermostat (S40) to cycle the heater based on ambient or liquid line temperatures for energy efficiency.
What happens if the crankcase heater fails in cold weather?
Failure to maintain oil temperature allows refrigerant to mix with the oil, leading to "foaming" at startup. This lack of lubrication and potential for liquid compression can cause catastrophic compressor failure.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












