HVAC Temperature Controls | McMaster-Carr

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Voltage

18V AC to 30V AC

20V AC to 30V AC

24V AC to 250V AC

24V AC to 277V AC

120V AC to 240V AC

120V AC to 277V AC

Millivolt to 30V AC

For Use With

Air Conditioners

Temperature Setting

-30° F to 100° F

-30° F to 212° F

20° F to 80° F

30° F to 110° F

32° F to 140° F

40° F to 86° F

40° F to 90° F

40° F to 99° F

40° F to 110° F

45° F to 99° F

50° F to 90° F

55° F to 85° F

100° F to 240° F

Thermostat Type

Nonprogrammable

Wi-Fi Enabled Programmable

For System Type

Application

Display Type

Sensor Type

Control Type

Electrical Connection Type

Current

For System Efficiency

Switch Designation

Maximum Temperature

Less than 25° F

25° F to 49.9° F

50° F to 99.9° F

100° F to 199.9° F

200° F or greater

For Use Outdoors

Export Control Classification Number (ECCN)

Height

Overall Width

Overall Depth

Overall Height

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Switch Starting Position

Minimum Temperature

Less than 25° F

25° F to 39° F

40° F to 49° F

50° F to 59° F

60° F or greater

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54 Products

Thermostats

Snap-Acting Thermostats

Snap-Acting Thermostats

Turn cooling systems on and heating systems off when equipment gets too hot

Low-Voltage Thermostats

Low-Voltage Thermostats

Control low-voltage HVAC systems that have only one speed

Programmable Low-Voltage Thermostats

Programmable Low-Voltage Thermostats

Adjust temperatures for certain times throughout the day

Wi-Fi Enabled Programmable Low-Voltage Thermostats

Wi-Fi Enabled Programmable Low-Voltage Thermostats

Control, monitor, and program your HVAC system from anywhere

Remote-Sensing Line-Voltage Thermostats

Remote-Sensing Line-Voltage Thermostats

Monitor and control temperatures in enclosures or different rooms

Line-Voltage Thermostats

Line-Voltage Thermostats

Regulate line-voltage HVAC systems

Programmable Line-Voltage Thermostats

Programmable Line-Voltage Thermostats

Adjust temperatures for certain times throughout the day, up to 240V AC

Wet-Location Line-Voltage Thermostats

Wet-Location Line-Voltage Thermostats

A sealed housing protects against dripping, splashing, and falling liquids

Hazardous Location Line-Voltage Thermostats

Hazardous Location Line-Voltage Thermostats

Regulate temperatures in areas with flammable gases, vapors, and dust

Tamper-Resistant Line-Voltage Thermostats

Tamper-Resistant Line-Voltage Thermostats

A built-in guard prevents damage, accidental changes, and tampering

DIN-Rail Mount Remote-Sensing Line-Voltage Thermostats

DIN-Rail Mount Remote-Sensing Line-Voltage Thermostats

Place the thermostat on a DIN rail and the sensor in enclosures or different rooms

Direct-Action Air-Powered Thermostats

Direct-Action Air-Powered Thermostats

As the temperature goes up, the pressure in the system goes up

Line-Voltage Thermostats with Thermowell

Line-Voltage Thermostats with Thermowell

The thermostat senses the liquid's temperature, and the thermowell protects the sensor

Multispeed Line-Voltage Thermostats

Multispeed Line-Voltage Thermostats

Control one- and two-speed heaters and air conditioners

Plug-In Line-Voltage Thermostats

Plug-In Line-Voltage Thermostats

Plug in the thermostat, then plug your heater into the thermostat

Remote-Sensing Hazardous Location Line-Voltage Thermostats

Remote-Sensing Hazardous Location Line-Voltage Thermostats

Monitor and control temperatures in rooms and enclosures with hazardous conditions

Remote-Sensing Line-Voltage Thermostats with Thermowell

Remote-Sensing Line-Voltage Thermostats with Thermowell

The thermostat senses the liquid's temperature, and the thermowell protects the sensor

Reverse-Action Air-Powered Thermostats

Reverse-Action Air-Powered Thermostats

As the temperature goes up, the pressure in the system goes down

Other Products

Duct Damper Actuators

Duct Damper Actuators

Automatically adjust duct dampers to regulate airflow

Temperature-Controlled Outlet Adapters

Temperature-Controlled Outlet Adapters

Automatically turn heating and cooling devices on and off as temperatures rise and fall

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)