Lennox 74W75 Limit Switch 326058-755 the Lennox 49L66 and 49L6601

the Lennox 49L66 and 49L6601 are functionally identical part numbers and can be used interchangeably in all specified HVAC systems

ensuring your pool heater ignitor replacement restores full system reliability for demanding HVACR applications

When should this part be replaced during service

Does this kit require additional breakers in the electrical panel

For extreme exposure

Lennox 74W75 Limit Switch 326058-755 the Lennox 49L66 and 49L6601The Lennox 74W75 Limit Switch is a genuine OEM safety component specifically calibrated to open the circuit at 225F, providing essential high limit protection for your heating system. As a Lennox furnace limit switch replacement, this fixed temperature control prevents the heat exchanger from reaching critical temperatures that could lead to structural fatigue or safety hazards. For technicians, installing a genuine Lennox 74W75 ensures the system