Carrier HH84AA020 Control Board 30067439-890 The York S1-024-35929-000 Pressure Switch

The York S1-024-35929-000 Pressure Switch is a critical safety component designed for precise HVAC airflow monitoring in high-efficiency systems

Can I use this relay for both heating and cooling stages

We recommend inspecting your existing 2-foot silicone rubber tubing for cracks or moisture during installation to ensure a proper pneumatic seal

this 2-piece valve ensures compliance with NSF/ANSI 372 and NSF 61-G standards for potable water systems

which is optimized for hot water

Carrier HH84AA020 Control Board 30067439-890 The York S1-024-35929-000 Pressure SwitchThe Carrier HH84AA020 Control Board is a genuine factory authorized HVAC replacement circuit board designed for precise sequence control in Carrier, Bryant, and Payne furnace systems. As a critical integrated furnace control, this OEM component manages the ignition process, blower motor timing, and safety circuit monitoring. For technicians troubleshooting intermittent system lockouts or failed inducer motor engagement, the HH84AA020 furnace board