From steam traps to full system solutions, Tunstall is your partner for indoor climate comfort
Steam
Steam traps regulate the process of converting water into steam and back into condensate.
Hydronics
Using heated or cooled water to regulate building temperature via pipes, controls and heat exchangers.
Electric
Electric solutions for heating, electric resistance back-up, and packaged terminal heat-pump applications.
Air
Fan coil units and packaged terminal heat pumps that deliver precise indoor comfort to occupants.
Tunstall Corporation is a family of brands from a family owned company

Founded in 1958, Tunstall Corporation is a recognized leader in the steam and hydronics industry. We operate in all facets of the industry, including design, engineering, manufacturing, sales and distribution. Tunstall is known for its industry expertise, quality products, resourcefulness and customer service. We combine our industry expertise with an entrepreneurial approach and professional management.
We are located in Chicopee, Massachusetts, where we have office, manufacturing and R & D space along with modern warehouse facilities. Tunstall Steam Traps, Steam Products, Macon Controls and Macon Balancing Products are distributed through a long-established network of representatives and distributors throughout North America.
We are members of the Association of Energy Engineers, the American Society of Heating and Refrigeration and Air-Conditioning Engineers (ASHRAE).
We are organized into five business units:
- Tunstall Steam Traps and Steam Products
- Macon Controls
- Macon Balancing
- Manufacturers’ Representation
- Energy Solutions
Steam
Steam traps regulate the process of converting water into steam and back into condensate.

- Steam traps
- Condensate pumps
- Pilot-operated regulators
- Direct-operated regulators
- Control valves
- Liquid drainers
Hydronics
Using heated or cooled water to regulate building temperature via pipes, controls and heat exchangers.
Electric
Electric solutions for heating, electric resistance back up, and packaged terminal heat pump applications.
Reducing carbon emissions and improving occupant comfort. We heat things up and cool things down!
Air
Fan coil units and packaged terminal heat pumps that deliver precise indoor comfort to occupants.
Reducing carbon emissions and improving occupant comfort. We heat things up and cool things down!

Manufacturer and multi-channel distributor of indoor climate products
Since 1958 Tunstall Corporation has provided customers with outstanding, cost-effective solutions in an energy conscious world. With our reputation for quality, service and innovation, we’ve built a group of loyal customers that include private entities, schools, colleges, universities, and government institutions.
- Capsules
- Thermostatic traps
- Thermal-disc traps
- F&T traps
- F&T repair kits
- Inverted bucket traps
- Steam modulator
Innovative radiator valves and sensors for maximum efficiency.
Macon Controls, a division of Tunstall Corporation, has been a trusted supplier of energy-efficient radiator valves and regulating sensors for the heating and cooling industry since 1975. Ideal for hydronic and low-pressure steam heating, Macon products deliver up to 30% energy savings and ensure precise temperature regulation. With innovative accessories like Umbrella Adapters™ and E-Z Fit™ Conversion Kits, Macon offers smart solutions to upgrade and optimize heating systems.
- Valves
- Operators
- One-pipe steam
- Conversion insert
- Umbrella adaptors
Streamline your system with Macon’s comprehensive balancing valves.
Introduced in 2005, Tunstall’s Macon Balancing valves have become consulting engineers’ and contractors’ preferred choice for all hydronic balancing requirements. Offering a complete balancing solution which includes multi-turn, manual venturi and automatic flow control valves, Macon Balancing is a “one stop shop” for all of your balancing needs.
- Y-Pattern multi-turn globe automatic/flow limiting
- Manual venturi
- Valve packages