Description
Product Overview
The Lennox 88M91 Hard Start Kit is a genuine OEM solution engineered to provide a powerful boost of starting torque to air conditioning and heat pump compressors. By dramatically increasing the torque available at startup, this kit helps compressors overcome the high-pressure differential that can make starting difficult — especially in hot weather conditions or after a short-cycle event. The result is a faster, more reliable compressor start that reduces wear and extends the overall service life of the system.
Why Use a Hard Start Kit?
Compressors are under the greatest electrical and mechanical stress at the moment of startup. Without assistance, repeated difficult starts can shorten compressor life, trip breakers, and lead to premature system failure. The Lennox 88M91 Hard Start Kit addresses these challenges by delivering a surge of starting energy and then dropping out of the circuit once the compressor is running — protecting both the compressor and the electrical system.
Key Features & Benefits
- Genuine Lennox OEM replacement part (SKU: 88M91)
- Increases compressor starting torque for fast, reliable startups
- Reduces electrical stress on the compressor motor windings
- Helps prevent nuisance tripping of breakers and fuses
- Extends compressor and system service life
- Ideal for systems experiencing hard-start or slow-start conditions
- Designed for compatibility with Lennox air conditioning and heat pump systems
- Simple installation for qualified HVAC technicians
Applications
- Lennox residential and light commercial air conditioning systems
- Lennox heat pump systems
- Systems operating in high ambient temperature environments
- Systems subject to low-voltage conditions or long refrigerant line sets
Installation Notes
Installation should be performed by a licensed HVAC technician. Always disconnect power before servicing. Refer to the Lennox equipment documentation and the kit’s included instructions for proper wiring and connection procedures.
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