Johnson Controls T22AAA-1 Thermostat

As a reliable choice for commercial and industrial heating applications, the Johnson Controls T22AAA-1 provides robust line voltage control without the complexity of modern digital interfaces. This mechanical wall thermostat features a liquid-filled sensing element that reacts quickly to ambient air change, ensuring a precise 1 3/4 degree differential across its 40 to 90 degree temperature range. Designed for SPST (Single-Pole Single-Throw) operation, this unit is ideal for driving unit heaters, electric baseboard heat, and fan coils. The integrated Off-Auto selector switch and external knob adjustment allow for immediate manual overrides in busy environments like warehouses or greenhouses. Its rugged steel cover with a "tawny silver" finish and bimetal thermometer offer long-term durability for HVAC contractors requiring a dependable thermostat replacement. Because this non-programmable line voltage thermostat utilizes high-efficiency diaphragms, no heat or cold anticipators are necessary, simplifying your HVAC installation and reducing commissioning time on the job site.

• Enhanced Sensitivity: The liquid-charged element provides a close differential for tighter temperature regulation in industrial spaces.
• Universal Versatility: No subbases required; mounts directly to standard single- or double-gang boxes for convenient heating system repair.
• Internal Durability: Features snap-acting switch contacts housed in a sealed, dust-protected enclosure to prevent premature failure.
• Simplified Maintenance: Includes a high-temperature stop and a field-calibratable bimetal thermometer for high-accuracy performance.

• Does this thermostat require an anticipator for 120V or 240V systems? Identical to other professional models in the T22 series, the T22AAA-1 does not require heat or cold anticipators, thanks to its high-leverage diaphragm design.
• What systems are compatible with the SPST Off-Auto switch? This SPST thermostat is specifically engineered for single-stage heating units, including electric furnaces, blast coils, and refrigeration storage heat.
• Is the temperature adjustment restricted for energy conservation? While this model features a standard 40 to 90°F range, it contains a concealed high-temperature stop that can be adjusted to limit the maximum setpoint.

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.