First Company T4071 Aqua Stat 37TC33

Description

First Company T4071 Aqua Stat 37TC33 Overview

The First Company T4071 is an aquastat controller designed for use in hydronic heating systems. Featuring the 37TC33 sensing element, this aquastat monitors and regulates water temperature to maintain safe and efficient system operation — protecting boilers, circulators, and connected hydronic equipment from overheating or undertemperature conditions.

Key Features

• Aquastat design for precise hydronic water temperature sensing and control
• 37TC33 sensing element for accurate immersion-style temperature detection
• Helps protect boilers and hydronic systems from unsafe temperature conditions
• Reliable switching action supports circulator pump and boiler control applications
• Compact, durable construction suited for residential and light commercial hydronic systems
• Direct OEM replacement for compatible First Company hydronic equipment

Applications

• Hydronic boiler systems
• Hot water heating loops
• Circulator pump control circuits
• Residential and light commercial hydronic installations

Why Choose the First Company T4071?

As an OEM-specified aquastat, the T4071 ensures a reliable, drop-in fit for First Company hydronic systems. Proper aquastat function is critical to system efficiency, equipment longevity, and occupant safety — making this a trusted replacement part for HVAC professionals and service technicians.