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The Lennox 73W19 Limit Switch 155°F 30V is a temperature-sensitive safety control designed to protect HVAC heating equipment from overheating. Installed in furnaces and air handlers, the switch monitors internal temperature and automatically interrupts the electrical circuit when temperatures reach 155°F. Once the system cools to a safe level, it allows operation to resume, helping maintain controlled heating performance. Operating on a 30-volt circuit, it supports reliable system protection. This limit switch enhances equipment safety, prevents potential component damage, and promotes consistent, efficient operation in residential HVAC systems.

For an efficient and reliable HVAC system, the Lennox Limit Switch is a great choice for optimal system performance.

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