Pay in 4 interest-free payments of $9.69 Learn more
Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
ensuring that fuel flow is immediately terminated if the pilot flame is extinguished
providing a clear indication that the control relay is energized
or if your compressor fails to engage despite receiving 24V from the thermostat
ensure the 210E Series or 325-9 Series housing is free of debris to maintain proper diaphragm response and system sealing
Lennox 21L89 Limit Switch ensuring that fuel flow isThe Lennox 21L89 Limit Switch is a critical safety component designed for precise thermal regulation in Lennox HVAC systems. This auto limit switch features a 3 inch insert and is engineered to open the electrical circuit if the heat exchanger temperatures reach the 210F to 240F range. As a direct OEM replacement part, the 21L89 is identical to the 21L8901, ensuring a drop in fit for contractors maintaining residential furnaces and air handlers. This
US$ 287.50
US$ 135.00
US$ 195.00
US$ 225.00
US$ 287.50
