The Carrier Factory Authorized Parts HH18HA160 is an OEM replacement switch designed for compatible Carrier HVAC equipment.

Identified in the supplied product information as Pressure Switch – Temperature Activated, the HH18HA160 is a safety-related electrical switching component intended for equipment requiring this specific manufacturer part number.

Temperature-actuated switches respond to changes in temperature, while conventional pressure switches respond to pressure changes. Because the supplied description includes both terms, the exact sensing mechanism of HH18HA160 should be verified against Carrier's technical documentation before installation.

The HH18HA160 is an equipment-specific factory replacement part designed to maintain the original system's intended control and safety functions when installed in an approved application.

Key Features & Function

• Brand: Carrier Factory Authorized Parts

• Manufacturer Part Number: HH18HA160

• OEM Product Description: Pressure Switch – Temperature Activated

• OEM replacement electrical switching component

• Designed for compatible Carrier HVAC equipment

• Supports equipment-specific control and safety functions

• Factory replacement for approved applications

• Equipment-specific mounting and electrical connections

• Intended for professional HVAC service and maintenance

Product Details & Specifications

Specification Note: The exact temperature ratings, pressure ratings, reset characteristics, and electrical configuration have not been independently verified. Do not assign operating thresholds without manufacturer confirmation.

HVAC Depot Pro Tip

Before replacing the Carrier HH18HA160, identify the switch's function in the equipment's wiring diagram and determine why the original control is not operating correctly.

A safety switch may activate because of an equipment malfunction rather than a defective switch.

Recommended diagnostic checks:

1. Confirm the complete equipment model and serial number.

2. Verify the original switch part number is HH18HA160.

3. Identify the switch's function in the manufacturer's wiring diagram.

4. Inspect wiring and electrical connections for damage.

5. Check the equipment for abnormal operating conditions.

6. Verify the switch's operating characteristics using manufacturer-approved procedures.

7. Confirm the replacement matches the original electrical and mounting requirements.

HVAC Depot Pro Tip: Do not substitute a temperature-actuated switch with a pressure-actuated switch, or vice versa, based solely on appearance or a similar product description.

Important: Never bypass a safety switch to keep HVAC equipment operating. The underlying cause of a safety shutdown must be identified and corrected.

Installation and testing should be performed by a qualified HVAC technician.

Equipment / Model Compatibility

The Carrier HH18HA160 is intended for select Carrier HVAC equipment requiring this specific OEM replacement switch.

Compatibility with Bryant and Payne equipment may be possible where their manufacturer parts documentation explicitly specifies HH18HA160, but it has not been independently verified.

Exact compatible equipment models have not been confirmed.

Before ordering, verify the complete equipment model number, serial number, original switch identification, and manufacturer-approved replacement information.

Compatibility Notice: HH18HA160 is not a universal HVAC safety switch. Confirm the correct sensing function and electrical specifications before purchasing.