Laars RE2071501 4" Vent Damper Assembly for JVS/JVT-50 Boiler

The Laars RE2071501 is a genuine OEM 4-inch automatic vent damper assembly designed specifically for Laars Mini-Therm JVS-50 and JVT-50 residential hydronic boilers. This energy-saving device is a critical component that prevents heated air from escaping through the vent when the boiler is not in operation, helping to improve overall system efficiency and reduce fuel costs.

Key Features:

• 4-inch diameter vent damper assembly designed for optimal performance
• Automatic operation integrates with boiler control system
• Prevents heat loss up the chimney when boiler is off
• Standard equipment on U.S. model Laars Mini-Therm boilers
• Direct replacement part - OEM quality and fit
• Compatible with both JVS spark ignition and JVT standing pilot models

This automatic vent damper is essential for maintaining the rated efficiency of your Laars Mini-Therm boiler. The damper closes when the boiler is not firing, preventing conditioned air from escaping through the flue and stopping cold outside air from entering. Installation should be performed by qualified heating professionals familiar with residential hydronic boiler systems.