Carrier HH22HA225 Switch

The Carrier HH22HA225 Temperature Actuated Switch is a critical OEM limit switch designed for flame rollout protection and high-limit safety in residential and commercial furnaces. Engineered as a single-pole single-throw (SPST) capillary-style component, this switch is a direct Factory Authorized Part for many Carrier, Bryant, and Payne air handlers and furnaces. It features a precise 225°F open setpoint to interrupt the heating circuit during an over-temperature event, with a manual or automatic 185°F reset (close) threshold once safe operating temperatures are restored.

Rated for 125 VA at 120-277V, the HH22HA225 furnace limit switch ensures robust electrical performance and HVAC system compatibility across various gas-fired units. This temperature actuator replaces legacy part numbers including HH22HA226 and HH12HA141, providing technicians with a reliable solution for restoring safety circuit integrity. Its durable construction and CSA-listed certification make it an essential replacement HVAC part for maintaining factory-spec safety standards and preventing heat exchanger damage.

• Direct OEM Replacement: Ensures exact fitment and calibration for Carrier, Bryant, and Payne equipment, maintaining original system engineering and safety protocols.
• Precise Thermal Response: Calibrated for 225 degree open and 185 degree close cycles to eliminate nuisance tripping while providing reliable high-limit protection.
• High Voltage Compatibility: Rated at 125 VA for versatility across 120V to 277V control circuits common in professional HVACR applications.
• Compact Capillary Design: Allows for streamlined installation in tight burner vestibules or heat exchanger compartments where space is limited.

• Which furnace models use the HH22HA225 switch? This switch is used across a broad range of 48DD, 48DE, 48DG, and 48DP series units. Check your specific wiring diagram to confirm the temperature rating and part number match.
• Can I use this switch to replace an HH22HA226? Yes, the HH22HA225 is a verified replacement for HH22HA226 and HH12HA141, ensuring consistent high-limit switch performance.
• What does it mean if my switch stays in the "open" position? If the temperature actuated switch remains open below 185°F, it likely indicates a manual reset requirement or internal component failure, necessitating a diagnostic check of the induction and combustion system.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.