If your furnace blower runs constantly or the burner shuts off prematurely

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ensuring the drain pan and cabinet dimensions align perfectly for a streamlined installation in the field

this component provides the reliable sealing required to prevent leak-related callbacks and ensures a vacuum-tight system during the commissioning of condensing units

Laars Heating Systems RE2071501 Damper Assembly 322055-301 If your furnace blower runsThe Laars RE2071501 Damper Assembly is a critical 4 inch automated vent damper engineered specifically for Laars Mini Therm JVS 50 and JVT 50 residential hydronic boilers. Operating as a safety and efficiency component, this replacement vent damper prevents the loss of heated air through the flue when the burner is not firing. For seasoned contractors, this HVAC damper assembly is the solution for "stuck vent" errors or ignition failures where the