The Lennox 15M20 Pressure Switch is a critical safety component designed for precise draft proving in residential and commercial furnaces and rooftop units

While it fits many Goodman-manufactured brands

you must use the 7-amp rated breaker as specified by the equipment's wiring diagram to ensure proper circuit protection

This genuine OEM Lennox TXV functions as a mission-critical metering device

Advanced Distributor Products 76777500 Control Board Kit 320788-702 The Lennox 15M20 Pressure SwitchThe Advanced Distributor Products 76777500 Control Board Kit is an essential OEM replacement designed to restore precision and reliability to your HVAC system. Also identified as the ADP 176777500, this comprehensive kit is specifically engineered for use with CUH and SEP series unit heaters, as well as HED duct furnaces. By regulating critical components like the blower motor and heating elements, this HEV HVAC circuit board ensures your equipment