Lennox 49L92 Pressure Switch

.58"wc SPST 1/4" barb connection Pressure Switch

49L92 is identical to 49L9201

Lennox 49L92 Pressure Switch – 0.58" WC SPST, Dual 1/4" Barb, OEM HVAC Replacement

The Lennox 49L92 Pressure Switch is a genuine OEM component designed to ensure safe and reliable operation of compatible Lennox HVAC systems. Rated at 0.58 inches water column (WC), this SPST (single pole, single throw) pressure switch monitors system pressure and helps verify proper airflow and venting conditions before allowing system operation.

Built to Lennox factory specifications, the 49L92 features dual 1/4" barb hose connections for secure tubing attachment and dependable pressure sensing. As an original OEM replacement part, it provides the correct fit, function, and performance needed to maintain equipment safety and efficiency.

This pressure switch plays a critical role in furnace and air handler safety circuits by preventing operation under improper draft or pressure conditions, helping protect system components and ensure consistent performance.

🔧 Key Features

• Genuine Lennox OEM Part

• Part Number: 49L92

• Pressure Rating: 0.58" WC

• Switch Type: SPST (Single Pole, Single Throw)

• Connections: Dual 1/4" barb fittings

• Application: HVAC pressure safety and airflow verification

✅ Benefits

• Ensures safe system operation

• Verifies proper airflow and venting conditions

• Direct OEM replacement for reliable fit and performance

• Supports long-term HVAC system efficiency and protection

⚙️ Compatibility

Designed for use in select Lennox heating and cooling equipment. Always confirm part number and system model before ordering to ensure proper fit.

The Lennox 49L92 0.58" WC Pressure Switch is a vital HVAC safety control that helps keep your Lennox system operating correctly and efficiently. Ideal for maintenance professionals and service technicians replacing a faulty or worn pressure switch.