Lennox 38276 Blower Relay

The Lennox 38276 Blower Relay is a mission-critical 24V SPDT blower relay engineered for heavy-duty HVAC blower motor control. As a primary switching relay, this component manages electrical loads by alternating between two distinct circuits based on 24VAC signals from the system control board or thermostat. Designed as a high-performance Lennox replacement part, it is the direct functional successor to the P-8-8479 blower relay, ensuring seamless integration into existing furnace relay and air handler configurations without requiring field modifications. Professional technicians prefer this Single Pole Double Throw relay for its reliable inductive load management, supporting effective airflow across residential and light commercial equipment. Whether troubleshooting an intermittent fan failure or performing a full system overhaul, utilizing this factory-specified motor control relay maintains original equipment efficiency and timing protocols. This 24-volt component is essential for multi-speed motor applications where precise switching between high and low-speed windings is required for proper climate regulation.

• Universal 24V Logic: Compatible with standard 24VAC control circuits found in most Lennox air handlers and furnaces.
• Direct Cross-Reference: Engineered to replace obsolete P-8-8479 units, reducing call-back risks and installation downtime.
• SPDT Versatility: Features Single Pole Double Throw architecture for managing both normally open (NO) and normally closed (NC) contacts.
• Heavy-Duty Construction: Built to withstand the high-frequency cycling typical of modern high-efficiency HVAC systems.
• OEM Fitment: Eliminates the need for bracket modifications, ensuring a secure mount within the electrical cabinet.

Is the Lennox 38276 compatible with multi-speed blower motors?
Yes, the SPDT blower relay configuration is specifically designed to switch between two circuits, making it the standard choice for controlling different speed taps on a blower motor based on the heating or cooling demand.

Can I use this relay to replace the P-8-8479?
The 38276 is the official direct replacement for the P-8-8479. It matches the original electrical specifications and footprint for a drop-in installation.

What happens if the blower relay fails?
A faulty Lennox 38276 often results in the blower motor failing to start, staying on constantly, or failing to switch speeds, which can lead to evaporator coil freeze-ups or heat exchanger overheating.

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.