making it fully compliant with the high-pressure requirements of R410A liquid lines

including popular 1FF0114 and 1FE0405 series units

the KH12 provides a reliable solution when direct coupling is not feasible

OEM Recommended: Tested and approved for use in recovery

Lennox 49L91 Pressure Switch Els PW 17895 making it fully compliant withThe Lennox 49L91 is a critical safety component designed for precise furnace draft monitoring within high efficiency heating systems. This OEM Lennox Pressure Switch (also identified as 49L9101) is factory calibrated to actuate at . 51" WC and reset at 0. 61" WC, ensuring the inducer motor maintains the necessary vacuum for safe combustion and flue gas venting. Featuring a SPST (Single Pole Single Throw) configuration and a standard 1 4" barb