Carrier HH11AZ180 Vent Safety Switch

The Carrier HH11AZ180 is a vent safety switch designed for residential and light commercial HVAC systems. This critical safety component monitors the furnace venting system to ensure proper exhaust gas flow and prevent potentially dangerous backdrafting conditions.

Key Features:

• Monitors differential pressure in the venting system
• Automatically shuts down the furnace if unsafe venting conditions are detected
• Genuine OEM Carrier replacement part ensures proper fit and function
• Designed to detect blocked or restricted vent pipes
• Helps protect against carbon monoxide hazards

This vent safety switch is a direct replacement component for compatible Carrier furnace models. When the switch detects inadequate draft or improper venting, it opens the circuit to prevent burner operation until the issue is resolved. Installation should be performed by a qualified HVAC technician in accordance with local codes and manufacturer specifications.