American Standard BAYSWT08AHALTA Pressure Switch

Product Description

The AMERICAN STANDARD BAYSWT08AHALTA is a high altitude pressure switch designed for use in forced-air gas furnace systems. Pressure switches monitor the negative pressure created by the inducer motor during the heating cycle. When pressure falls outside the required range, the switch opens the control circuit and prevents ignition, protecting the heat exchanger and combustion assembly. The high altitude configuration adjusts the trip point to account for reduced air density at elevated elevations, ensuring reliable and code-compliant furnace operation where standard pressure switch settings are no longer appropriate.

This pressure switch is intended for residential gas furnace installations at high altitude locations where the factory-installed standard pressure switch must be replaced or supplemented per manufacturer specifications. Licensed HVAC technicians performing furnace service, commissioning, or altitude-related adjustments at sites above standard elevation thresholds are the typical installers of this component.

Key Features

• High altitude configuration with trip point calibrated for reduced air density at elevated elevations
• Direct OEM-style replacement for American Standard gas furnace applications
• Sold as a single unit for per-system replacement
• Protects against unsafe furnace operation by opening the control circuit when inducer pressure is out of range

Compatibility

Designed as an OEM-style high altitude replacement pressure switch for American Standard residential gas furnace systems requiring altitude-specific pressure switch configurations.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the furnace manufacturer's service documentation. Always shut off power to the furnace at the disconnect and turn off the gas supply before servicing any pressure switch or combustion-related component. Verify the inducer assembly and pressure tubing connections are intact before reinstalling or replacing the switch. Consult the unit's wiring diagram for correct port and terminal identification prior to reassembly.