LENNOX 52M40 - OEM Furnace Replacement Air Pressure Switch

SPST Pressure Switch

The LENNOX 52M40 is a genuine Lennox SPST pressure switch that controls the HTP (High Temperature Pilot) burners. The pressure switch has normally closed contacts that open to allow gas flow when the pilot circuit is activated.

The Lennox 52M40 is an OEM furnace air pressure switch used in Lennox G-37, ML-37, X-21 and other furnaces requiring a mechanical pressure switch with spst contacts. If you need to replace your existing switch, we have it here for you!

This Lennox 52M40 Pressure Switch is an OEM factory replacement made to fit the Lennox model you are currently using, and also fits some other brands as well.

The LENNOX OEM Furnace Replacement Pressure Switch (52M40) is manufactured to meet or exceed OEM specifications. The torsion spring allows you to adjust the switch without tools.

The Lennox 52M40-G19 is a brand new OEM pressure switch. The Lennox 52M40-G19 is used in the following systems of Lennox furnaces:

The Lennox 52M40 Pressure Switch is used on Lennox furnaces and air conditioners. It measures the current pressure in your air system, and either on or off, depending on how your Lennox furnace is setup. This is a factory original Lennox pressure switch part that will fit right into your existing furnace or air conditioner. Your local heating contractor can give you more information about the options and applications for replacement of the Lennox 52M40 Pressure switch for your model of furnace or air conditioner

The Lennox 52M40 Furnace Pressure Switch is for use on furnaces such as Lennox Model No.: G36B, G28VE, G25F-VPS, and others. It stops the furnace blower when airflow is blocked.