LO-PRESSURE SWITCH
Lennox LO-PRESSURE SWITCH 12L21
The LO-PRESSURE SWITCH controls the burner failure relay and compressor lockout after the burner flame extinguishes. It will not turn ON the burner again until the cause of low pressure has been corrected.
Lennox 12L21 LO-PRESSURE SWITCH
The Lennox L12-21 switch is a low pressure switch that is included with the new Lennox Media Series condensing units. LO-PRESSURE SWITCH
The Lennox® 12L21 LO-PRESSURE SWITCH is designed to work with Model VS81CF and all other compatible Lennox high-efficiency furnaces.
Our Lennox 12L21 LO-PRESSURE SWITCH is designed to replace a worn or damaged temperature switch. The Lennox part number is 49737-13. This Lennox Pressure Switch comes with a one year warranty from the manufacturer. Replacement of this part is recommended by our Lennox air conditioning specialists. Call us for general AC service and replacement parts, including this Lennox Pressure Switch
Lennox® 12L21 4" x 9" low-pressure switch provides protection against over-pressurization of boilers and air vents. It has 18/8 stainless steel housing for durability and UL approved (MBUS®).