Is the Allanson 542A compatible with 542ASF systems

High Reliability: Features a durable SPST switch mechanism that withstands the cycling demands of modern high-efficiency heating equipment

Is the 031-01652-001 compatible with R-410A systems

Designed as a rugged electronic spark ignition module

By managing the blower delay

Lennox 63W40 Pressure Switch 30067439-890 Is the Allanson 542A compatibleThe Lennox 63W40 Pressure Switch is a critical OEM replacement component for two stage furnaces and heat pumps, including the G60DF and G60UH series. Designed to ensure safe combustion cycles, this dual pressure switch features factory calibrated set points of 0. 20" WC for low stage operation and 0. 40" WC for high stage performance. As a veteran grade HVAC pressure switch, it monitors the negative pressure generated by the inducer motor, providing