Low-Voltage Thermostats
These thermostats work with low-voltage HVAC systems that have only one speed.
Style A thermostats mount vertically or horizontally.
For System | Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Efficiency | Voltage | Current, A  | Temp. Setting, °F | Dia. | Ht. | Wd. | Dp. | Mounting Fasteners Included | Each | ||
For Air Conditioners | ||||||||||||
| A | Electric | Single Stage | 24V AC | 1 | 50° to 90° | __ | 5" | 3 1/4" | 1 3/8" | Yes | 00000000 | 000000 |
For Air Conditioners and Heaters | ||||||||||||
| A | Electric, Gas, Oil | Single Stage | 24V AC | 1 | 50° to 90° | __ | 5" | 3 1/4" | 1 3/8" | Yes | 00000000 | 00000 |
| B | Electric, Gas, Oil | Single Stage | 20V AC-30V AC | 1 | 40° to 90° | 4" | __ | __ | 1 3/4" | Yes | 0000000 | 00000 |
For Heaters | ||||||||||||
| A | Electric | Single Stage | <1 and 24V AC | 1 | 50° to 90° | __ | 5" | 3 1/4" | 1 3/8" | Yes | 00000000 | 00000 |
| B | Gas, Oil | Single Stage | 20V AC-30V AC | 1 | 40° to 90° | 4" | __ | __ | 1 3/4" | Yes | 0000000 | 00000 |
Programmable Low-Voltage Thermostats
Set these thermostats to adjust the temperature at certain times each day. They control low-voltage HVAC systems. You can lock the settings to prevent unwanted or accidental changes, which is helpful in public areas. If the power fails, these thermostats have battery backup to retain your program.
Touchpad thermostats can be used with a remote sensor (sold separately) that takes temperatures up to 300 ft. from the thermostat.
Single-stage thermostats work with systems that have only one speed. Multistage thermostats work with systems that have up to three heating speeds and two cooling speeds.
Thermostats with a daily program function can have an individual program for each day of the week.
For System | Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Efficiency | Program Function | Voltage | Current, A | Temp. Setting, ° F | Ht. | Wd. | Dp. | Batteries Included | Mounting Fasteners Included | Each | |
For Heaters | ||||||||||||
Push Button Control | ||||||||||||
| Electric Gas Heat Pump Oil Steam Water | Single Stage | Daily, Weekdays/Weekends, Weekdays/Saturday/Sunday | 20 to 30V AC | 1 | 40° to 99° | 4 1/16" | 4 1/16" | 1 1/8" | Yes | Yes | 0000000 | 0000000 |
For Air Conditioners and Heaters | ||||||||||||
Push Button Control | ||||||||||||
| Electric Gas Heat Pump Oil | Single Stage | Weekdays/Saturday/Sunday | <1 to 30V AC | 1.5 | 45° to 99° | 3 3/4" | 6" | 1 1/8" | Yes | Yes | 0000000 | 00000 |
Touchpad Control | ||||||||||||
| Electric Gas Heat Pump Oil | Single Stage | Daily | <1 to 30V AC | 1.5 | 45° to 99° | 4 5/8" | 5 7/8" | 1 1/4" | Yes | Yes | 0000000 | 000000 |
| Electric Gas Heat Pump Oil Steam | Multistage | Daily | <1 to 30V AC | 1.5 | 45° to 99° | 4 5/8" | 5 7/8" | 1 1/4" | Yes | Yes | 0000000 | 000000 |
| Optional Remote Sensor for Touchpad Thermostats | 0000000 | Each | 000000 |
Wi-Fi Enabled Programmable Low-Voltage Thermostats
Control, monitor, and program your HVAC system from anywhere. These thermostats connect to a Wi-Fi network, so you can use a computer, tablet, or smartphone to view and adjust settings. You can also lock the settings to prevent accidental changes or tampering in public areas. They control low-voltage, multistage HVAC systems that have up to three heating and cooling speeds. Use them to set an individual program for each day of the week.
Location-sensing thermostats connect to an app that tracks the location of your mobile device. They can automatically adjust the temperature based on your distance from the thermostat. Use the app to send push notifications for service reminders, unexpected temperature changes, and interruptions to the Wi-Fi connection.
Thermostats with a humidity/temperature sensor also detect motion. Place the remote sensor in a room or enclosure to maintain a consistent climate. To help save energy, they can raise or lower the temperature when no motion is detected.
Thermostats | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Replacement Remote Sensors | ||||||||||||||
| For System Type | Voltage | Current, A | Temp. Control Type | Temp. Setting, °F | Ht. | Wd. | Dp. | Sensor Type | Mounting Fasteners Included | Features | Each | Pkg. Qty. | Pkg. | ||
For Air Conditioners and Heaters | |||||||||||||||
Push Button Control | |||||||||||||||
| Electric Gas Heat Pump Oil | 20V AC-30V AC | 1.5 | __ | 45° to 99° | 3 3/4" | 5 7/8" | 1" | Built In | Yes | Lockable Settings | 0000000 | 0000000 | __ | 000000 | 00 |
Touchpad Control | |||||||||||||||
| Electric Gas Heat Pump Oil Steam | 18V AC-30V AC | 1 | __ | 40° to 99° | 3 1/2" | 4 1/2" | 7/8" | Built In | Yes | Lockable Settings | 0000000 | 000000 | __ | 000000 | 00 |
For Air Conditioners, Fans, and Heaters | |||||||||||||||
Touchpad Control with Mobile App Notification | |||||||||||||||
| Electric Gas Heat Pump Oil Steam | 20V AC-30V AC | 1 | Location-Sensing | 40° to 99° | 4" | 4" | 1" | Built In | Yes | Lockable Settings | 0000000 | 000000 | __ | 000000 | 00 |
| Electric Gas Heat Pump Oil Steam | 20V AC-30V AC | 1 | Location-Sensing | 40° to 99° | 5" | 3 3/4" | 1" | Built In, Remote | Yes | Humidity/Temperature Sensor, Lockable Settings | 0000000 | 000000 | 2 | 00000000 | 0000000 |
Snap-Action Thermostats
Also known as snap discs, these thermostats switch on cooling systems or switch off heating systems when equipment gets too hot. Each thermostat has five temperature options for switch activation; choose the one that best suits your application.
Unlike heat-actuated switches, these thermostats reset automatically, saving you the effort of replacing a melted fusible link. To calculate their reset temperature, subtract their differential temperature from the temperature you set them at. For example, a thermostat set at 100° F with a 20° F differential will reset at 80° F.
Normally open thermostats are also known as low-limit thermostats—they turn on at a set temperature. They’re good for use with fans and blowers.
Normally closed thermostats are also known as high-limit thermostats—they turn off at a set temperature. They’re often used with electric water heaters, stoves, and furnaces.
Overall | Mounting | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature Setting | Temperature Differential | Switch Type | Switch Starting Position | Voltage | Current | Wire Connection Type | Terminal Size | Face Dia. | Ht. | Wd. | Dp. | Hole Dia. (No. of) | Fasteners Included | Each | |
Close at Temperature Setting | |||||||||||||||
| 90° F, 100° F, 110° F, 120° F, 130° F | 20° F | SPST | 1 Off (Normally Open) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 000000 |
| 140° F, 150° F, 160° F, 170° F, 180° F | 20° F | SPST | 1 Off (Normally Open) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
Open at Temperature Setting | |||||||||||||||
| 135° F, 145° F, 155° F, 165° F, 175° F | 20° F | SPST | 1 On (Normally Closed) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
| 135° F, 145° F, 155° F, 165° F, 175° F | 40° F | SPST | 1 On (Normally Closed) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
| 175° F, 185° F, 195° F, 205° F, 215° F | 40° F | SPST | 1 On (Normally Closed) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
| 210° F, 220° F, 230° F, 240° F, 250° F | 40° F | SPST | 1 On (Normally Closed) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
| 250° F, 260° F, 270° F, 280° F, 290° F | 40° F | SPST | 1 On (Normally Closed) | 120V AC/240V AC | 25A | Quick-Disconnect Terminals | 1/4" | 3/4" | 1 3/4" | 2" | 1 3/8" | 3/16" (2) | No | 0000000 | 00000 |
Multi-Speed Line-Voltage Thermostats
Control one- and two-speed line-voltage HVAC systems. Set the thermostat to activate the device’s second speed when the temperature surpasses the setting for the first speed by 3.6° F to 9° F.
Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Temp. Differential, °F | For Use Outdoors | Mounting Fasteners Included | Environmental Rating | Specifications Met | Each | |
For Air Conditioners and Heaters | |||||||||||||
| 24V AC-250V AC | 15 | 32° to 140° | SPDT | 6" | 2 3/4" | 3 3/8" | 3.6° to 9° | Yes | Yes | IP65; NEMA 4 | CE Marked | 0000000 | 0000000 |
Line-Voltage Thermostats
Regulate line-voltage HVAC systems.
Overall | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Specifications Met | Each | |
For Air Conditioners and Heaters | ||||||||||
| 24V AC-277V AC | 22 | 40° to 90° | SPDT | 4 3/4" | 3" | 1 3/8" | Yes | UL Listed | 0000000 | 0000000 |
Hazardous Location Line-Voltage Thermostats
Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G.
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Environmental Rating | Each | |
For Air Conditioners and Heaters | ||||||||||||
| 24V AC-277V AC | 22 | 50° to 90° | SPDT | 5 3/4" | 6 3/8" | 5 5/8" | No | 1/4" | UL Listed, CSA Certified | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 | 0000000 | 0000000 |
| 24V AC-277V AC | 22 | 50° to 90° | DPDT | 5 3/4" | 6 3/8" | 5 5/8" | No | 1/4" | UL Listed, CSA Certified | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 | 0000000 | 000000 |