Warm air only does its job once it leaves the firebox, and that's the blower's role. This Enviro blower system (part 50-3622, also listed as 50-3621 and 50-4150) replaces the worn blower assembly in Westport units equipped with the IPI Sit Proflame 2 control, built from roughly April 2017 to January 2022.

Key Benefits

• Restores factory-level airflow and heat distribution to the room
• Helps the appliance run at its intended efficiency rather than pooling heat near the firebox
• Genuine Enviro part built for this specific Westport control platform
• Direct-fit replacement for the original blower assembly

Purpose

The blower pulls room air across the heat exchanger and pushes it back out, so a failing or sluggish motor shows up as uneven heating even when the fire itself looks normal.

Other Notes

A blower that's slowing down or cycling oddly is often the first sign to check before assuming a control board issue, since restricted airflow can mimic other faults. Keep the intake path free of dust buildup to help the new blower run at full capacity.

While replacing the blower, it's worth inspecting related electrical components in this system — sensors, the valve, and the remote receiver — for wear, since these parts share duty cycles with the blower motor.

Not sure it fits your unit? Contact us with your model number and we'll confirm before you order.