Honeywell L4006G1006 3/8″ Copper Aquastat Controller 100-200°F 48″ Element

Description

The Honeywell L4006G1006 is a dependable immersion-type aquastat controller engineered for precise water temperature sensing and control in residential and light commercial hydronic heating systems. Featuring a 3/8″ copper immersion well fitting, this aquastat installs directly into the boiler or piping to deliver accurate, responsive temperature monitoring and switching.

Key Features

• Temperature control range: 100°F to 200°F — ideal for hot water boiler applications
• 48″ capillary sensing element for flexible installation reach
• 3/8″ copper immersion well fitting for reliable, corrosion-resistant contact with system water
• Aquastat-type controller designed for immersion sensing in hydronic heating systems
• Compact, rugged construction for long-term reliability in demanding boiler environments
• Suitable for use as a high-limit, low-limit, or operating aquastat depending on system configuration

Application

The L4006G1006 is well-suited for controlling circulator pumps, zone valves, and boiler burners based on water temperature. It protects hydronic systems from overheating and ensures efficient, consistent heat delivery throughout the building.

Specifications

• Model: L4006G1006
• Temperature Range: 100°F – 200°F
• Sensing Element Length: 48″
• Immersion Well Size: 3/8″ copper
• Type: Immersion Aquastat Controller
• Brand: Honeywell Home