Lennox 71G15 Blocked Vent Switch Overview
The Lennox 71G15 is a 120-volt blocked vent switch engineered to safeguard your heating system against hazardous blocked or restricted flue conditions. When the vent temperature reaches the 280°F trip point, this switch interrupts the circuit and shuts down the burner, preventing overheating, heat exchanger damage, and the potential for carbon monoxide intrusion into the living space.
Key Features
- OEM Lennox replacement part — SKU 71G15
- Operating voltage: 120V
- Trip temperature: 280°F
- Monitors flue/vent for blocked or restricted conditions
- Interrupts burner operation upon detecting unsafe vent temperatures
- Helps prevent heat exchanger damage and carbon monoxide hazards
- Direct OEM replacement for compatible Lennox furnace models
Application
Designed as a direct OEM replacement for Lennox furnaces and heating appliances that require a 120V blocked vent safety switch. Always verify compatibility with your specific Lennox model before installation.
Why Use an OEM Blocked Vent Switch?
A blocked vent switch is a critical safety component in any forced-air heating system. Using a genuine Lennox replacement ensures proper fit, reliable performance, and continued compliance with system safety requirements. Do not operate heating equipment with a failed or bypassed vent safety switch.
