Resideo by Honeywell 121371M 3/4" NPT Thermostat Well

The Resideo by Honeywell 121371M is a long thermostat well designed for use in hydronic heating and cooling systems. This component provides a protective housing for temperature sensors and thermostats, allowing accurate temperature measurement while protecting sensitive controls from direct contact with system fluids.

Key Features:

• 3/4" NPT (National Pipe Thread) connection for secure installation
• Long well design provides extended reach into piping systems
• Durable construction suitable for hydronic heating and cooling applications
• Compatible with Resideo and Honeywell temperature controls
• Protects temperature sensors from direct fluid contact

This thermostat well is commonly used in boiler systems, radiant heating installations, and other hydronic applications where accurate temperature sensing is critical for proper system operation and control.