Schneider Electric (Barber Colman) Pneumatic Thermostats

Schneider Electric (Barber Colman) Pneumatic Thermostats for Commercial HVAC

When it comes to maintaining legacy pneumatic HVAC systems in commercial buildings, few names carry more weight than Schneider Electric (Barber Colman). With a product history stretching back to 1894, Barber Colman built its reputation supplying pneumatic control components to commercial buildings across North America, and that heritage is fully preserved in the line of pneumatic thermostats that Schneider Electric continues to produce under the Barber Colman brand today.

Proven Series for Proportional Pneumatic Control

The Barber Colman pneumatic thermostat lineup covers both one-pipe and two-pipe configurations, giving facilities technicians the exact replacement they need for virtually any installed system. The 2211 Series one-pipe thermostats are force-balanced units that utilize an external restrictor in the supply line; their design incorporates a highly sensitive bimetal thermostatic element and a ball valve for pneumatic feedback, which ensures accuracy and stability across the full operating range. For two-pipe systems, the 2212 Series delivers proportional control of pneumatic devices and actuators, featuring a highly sensitive bimetal element paired with a pilot-operated relay and pneumatic feedback for rock-solid accuracy and stability. Both series offer a setpoint range of 55–85°F (13–29°C) with an adjustable throttling range of 2–12°F, and a serrated thumb wheel makes setpoint adjustment straightforward in the field.

For applications where occupancy schedules demand more than a single control point, the 2214 Series and 2216 Series step in as dual-temperature solutions. The 2214 Series utilizes dual bimetals and is particularly well-suited to day/night control in buildings such as schools and hospitals, while the 2216 Series adds dual air-main capability, enabling automatic day/night setpoint changeover in systems where occupied and unoccupied setpoints must shift based on supply pressure changes — ideal for hotels, offices, and institutional facilities.

Why Barber Colman Pneumatic Thermostats Still Matter

For building automation technicians and mechanical contractors maintaining pneumatic systems originally installed in commercial buildings from the 1970s through the 1990s, Barber Colman replacement parts remain a primary sourcing category. These thermostats are used for proportional control of pneumatically activated valves, dampers, and similar devices in heating, ventilating, and air conditioning systems — keeping existing control loops running without the cost and disruption of a full system retrofit.

Matching the correct model to the existing installation is critical: pneumatic thermostats are calibrated to a specific main air pressure, and the pipe configuration (one-pipe vs. two-pipe), acting direction (direct or reverse), and mounting style must all align with what’s already on the wall. Cover options are available in various styles — including models with a setpoint scale and thermometer, setpoint scale only, thermometer only, or blank — allowing for a clean, finished install that matches the original appearance.

Backed by Schneider Electric’s global manufacturing and supply chain, these thermostats offer the reliability that facilities teams in hospitals, schools, office towers, and industrial buildings depend on to keep critical HVAC systems operating without interruption.