Description
The Lennox 49L90.47 Inch Pressure Switch 0-4500FT is an essential safety and control device in HVAC systems particularly in furnaces and other heating appliances. This pressure switch controls and supervises the pressure of the working environment and ensures safety. It turns on or off the furnace based on pressure changes to avoid damaging conditions such as low air flow, or blocked vents. The switch is set to cover altitude from 0 to 4500 feet, which means that it can be used in different geographical locations.
