Johnson Controls T26S-22 Thermostat

The Johnson Controls T26S-22 is a robust line voltage thermostat engineered for high-accuracy temperature control in demanding light commercial and industrial HVACR applications. This SPDT thermostat (Single Pole Double Throw) provides ultimate flexibility, allowing for seamless integration into heating, cooling, or year-round ventilation systems. Operating within a 5 to 30 degrees Celsius range, the T26S-22 is functionally identical to the T26S-22C model, featuring a vapor-actuated sensing element that ensures rapid response to ambient temperature shifts. Built with a heavy-duty steel enclosure and high-amperage contacts, it handles inductive loads typical of fan coils, baseboard heaters, and unit heaters without needing an external contactor. It supports universal mounting configurations and features a clearly calibrated dial for precise setpoint adjustments, making it a reliable choice for contractors prioritizing energy efficiency and minimal callback rates in HVAC control systems.

• Versatile Application: SPDT contact configuration enables the unit to function for heating only, cooling only, or changeover applications.
• Rugged Durability: The heavy-duty bimetal sensing element and steel construction are designed for long-term reliability in utility and mechanical rooms.
• Wide Compatibility: Direct replacement for most standard line voltage thermostats, simplifying inventory for field service.
• Precise Control: Maintains tight temperature differentials to optimize equipment cycling and reduce component wear.

Can the T26S-22 be used to control a 240V baseboard heater?
Yes, this unit is rated for line voltage and can handle 120V to 240V circuits, provided the amperage draw stays within the specified inductive and resistive load limits.

Is the T26S-22 interchangeable with the T26S-22C?
Yes, they are technically identical units; the "C" suffix typically refers to bulk or contractor packaging but the specifications remain the same.

Does this thermostat require a neutral wire?
As a mechanical line voltage thermostat, it breaks the hot leg of the circuit and typically does not require a neutral connection for operation, facilitating easier retrofits in older buildings.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.