LENNOX 49L90 - OEM Upgraded Replacement Furnace Air Pressure Switch -0.47"

HighAltPressSw 4501-7500ft .47

- OEM Upgraded Replacement Furnace Switch is designed to replace Lennox part number 49L90 (0.47" HighAltPressSw)

Say goodbye to faulty pressure switches and hello to the Lennox OEM Upgraded Replacement Furnace Air Pressure Switch 4501-7500ft. This pressure switch is a replacement for the Lennox Air Pressure Switch that is packaged with many Lennox furnaces. The installation of this pressure switch requires the assistance of a Lennox certified HVAC professional, but is easily installed in just a few minutes. If your furnace air pressure switch is faulty, you can save time and money by getting the OEM Upgraded Replacement Furnace Air Pressure Switch directly from the manufacturer.

Replacement HVAC pressure switch for Lennox and other furnace manufacturers. Comes standard with 1/8" NPT male inlet and outlet. Heavy-duty thermoplastic construction with O-ring seal. Flame actuated, will open at .14" Hgt and close under .071" Hgt (4501 -7500 ft).

Lennox Original Equipment (OEM) replacement furnace air pressure switch checks for proper airflow in your furnace to warn you of potential problems. If there is a leak or clog in the ductwork, this 4501-7500ft range air pressure switch will cycle on and off, giving an alert if a problem arises.

The Lennox pressure switch replaces part 4501-75. It is compatible with many Lennox models manufactured between 1987 and 2011. This switch is typically used with the following Lennox furnaces: CR22XL, HR13ACX, MP13ACX, M1000CDE, M1400CADL and M2000CDEC The controller measures the altitude at which it is installed, and if it is installed at a higher altitude than 5400 feet, the customer must set the switch to 0.47 instead of 0.55 .

High Pressure Air Pressure Switch for Lennox Htype Furnace Models.

The Lennox furnace pressure switch is an OEM, upgraded replacement for a Lennox AC/Furnace. If your furnace has a pressure switch, it is imperative that you have a replacement ready should the air pressure switch fail during operation of your HVAC system. The 49L90-051 air pressure switch can be used in Lennox furnaces such as the: 90L90, 90L90T, 80ACB, 90ACB, 85ACB, 95ACB, 95MB.