Macon Controls

Macon Controls is a division of Tunstall Corporation, founded 1958 and headquartered in Chicopee, Massachusetts. Macon Controls has supplied energy-efficient radiator valves and regulating sensors to the heating industry since 1975. Products conform to ASHRAE Standard 102P-1983 and European Standard EN 215/1215.

Product Lines

• Thermostatic Radiator Valves (TRVs): Self-contained zone control for hydronic and low-pressure steam radiators/baseboards; straight, angled, and radiator-specific configurations; up to 30% energy savings vs. uncontrolled radiators
• Macon Balancing Valves (introduced 2005): For hydronic system balancing in new installation and retrofit; preferred by consulting engineers and contractors
• Umbrella Adapters: Allow Macon thermostatic head upgrade on existing valve bodies without body replacement
• E-Z Fit Conversion Kits for upgrading older systems to TRV control
• Regulating sensors and accessories

Why Contractors Specify Macon Controls

• TRVs provide per-room temperature control without separate thermostat and zone valve circuits
• Self-regulation accounts for solar gain, internal heat, and occupancy; prevents overheating individual rooms
• Up to 30% energy savings vs. uncontrolled radiator systems
• Umbrella Adapter: upgrade to TRV control without draining the system or replacing valve bodies
• ASHRAE and EN 215/1215 certified performance for specification requirements

How to Choose Macon Controls Products

TRV retrofit: identify existing valve body type (straight/angled) and connection size; select matching Macon TRV body and head. Head-only upgrade on existing valve bodies: use Umbrella Adapter. New installation: specify complete TRV with body and head in connection size. Balancing: specify Macon Balancing Valve in pipe size per circuit; set positions per design flow calculations.

Frequently Asked Questions

• What is a TRV? A self-contained valve that modulates radiator water flow based on room temperature, providing individual room control without a separate thermostat or zone valve circuit.
• Who owns Macon Controls? Division of Tunstall Corporation (founded 1958, Chicopee, MA).
• Energy savings? Up to 30% vs. uncontrolled radiator systems.
• Umbrella Adapter? Allows Macon thermostatic head upgrade on existing valve bodies without removing or replacing the valve body.
• Standards? ASHRAE 102P-1983 and European Standard EN 215/1215.