Temperature Controllers

A temperature controller is an essential device for managing the difference between a desired setpoint and an actual measured temperature. Ideal for applications in commercial heating, cooling, air conditioning, and refrigeration, temperature controllers provide precise on/off control to maintain optimal conditions. Modern electronic temperature controllers feature easy-to-read digital displays, enabling quick programming with a single touch. Many models include one- and two-stage capabilities, advanced diagnostic detection, and a broad setpoint temperature range, making them versatile for various heating and cooling applications.

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Showing 145–192 of 624 resultsSorted by popularity

Hi-Limit Thermostat, 100–240°F Temperature Range

Patterson-Kelley

SKU: 23-0000-0230
$413.91
MSRP: $476.00
You save 15%
Patterson-Kelley 23-0000-0230 Hi-Limit Thermostat, 100-240°F quantity
JUMO Thermostat EM Series, 95–210°F Temperature Range

Patterson-Kelley

SKU: 10-0490-3516
$516.89
MSRP: $594.42
You save 15%
Patterson-Kelley 10-0490-3516 JUMO Thermostat EM Series 95-210°F quantity
TH356 Rigid Bulb Thermostat, 30–180°F Temperature Range

Siemens

SKU: 356-1005
$476.78
MSRP: $548.30
You save 15%
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30/180°F Direct Acting Thermostat with Rigid Bulb Sensor

Siemens

SKU: 356-0750
$384.65
MSRP: $442.35
You save 15%
Siemens Building Technology 356-0750 30/180F D.A. Rigid Bulb Thermostat quantity
Heat R/A Cool D/A Dual Setpoint Controller

Siemens

SKU: 193-217
$209.94
MSRP: $241.43
You save 15%
Siemens Building Technology 193-217 Heat R/A Cool D/A Dual Setpoint Controller quantity
20/120°F 6′ Capillary SPDT Temperature Controller

Siemens

SKU: 141-0520
$239.71
MSRP: $275.67
You save 15%
Siemens Building Technology 141-0520 20/120F 6' Cap SPDT Temperature Controller quantity
KPS79 Temperature Controller, -40 to 70°C Range, SPDT

Peerless Boiler

SKU: 54156
$305.89
MSRP: $351.77
You save 15%
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80-150°C Temperature Controller KP81

Peerless Boiler

SKU: 54120
$163.15
MSRP: $187.62
You save 15%
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50/350°F Reverse Acting Rigid Bulb Air Operated Thermostat

Powers Process Controls

SKU: 744-1214
$3,004.68
MSRP: $3,455.38
You save 15%
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Electronic Temperature Defrost Control with Remote Sensor

Paragon

SKU: ERC2-222111-370
$422.96
MSRP: $486.40
You save 15%
Paragon ERC2-222111-370 Electronic Temperature Defrost Control w/ Remote quantity
Remote Bulb Thermostat -30/100°F SPDT NEMA 4X 8 ft

PECO

SKU: TRF115-007
$94.98
MSRP: $109.23
You save 15%
PECO TRF115-007 Remote Bulb Thermostat -30/100°F SPDT NEMA 4X 8 ft quantity
-30/100°F SPDT NEMA 4X Coiled Bulb Thermostat

PECO

SKU: TF115-023
$87.68
MSRP: $100.83
You save 15%
PECO TF115-023 -30/100°F SPDT NEMA 4X Coiled Bulb Thermostat quantity
Digital Display with Temperature Adjustment

PECO

SKU: SDP155-009
$125.55
MSRP: $144.38
You save 15%
PECO SDP155-009 Digital Display with Temperature Adjustment quantity
Replacement Temperature Knob 155°F – 10 Pack

PECO

SKU: 73207
$53.28
MSRP: $61.27
You save 15%
PECO 73207 Replacement Temperature Knob 155°F - 10 Pack quantity
Water Heater Controller for NTI Boiler Systems

NTI Boiler

SKU: 6000084158
$597.39
MSRP: $687.00
You save 15%
NTI Boiler 6000084158 Water Heater Controller quantity
Panel Mount Temperature Control with Digital Display, 50–940°F

Manitowoc Ice

SKU: 000007888
$147.58
MSRP: $169.72
You save 15%
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Thermostat Op40 Cl20 Freeze Protection Temperature Control

Mars

SKU: 33475
$90.41
MSRP: $103.97
You save 15%
Mars 33475 Thermostat Op40 Cl20 Freeze Protection Temperature Control quantity
Refrigeration Thermostat, Opens at 20°F, Closes at 60°F

Mars

SKU: 33455
$55.91
MSRP: $64.30
You save 15%
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Defrost Thermostat, Opens at 20°F, Closes at 5°F

Mars

SKU: 33435
$84.14
MSRP: $96.76
You save 15%
Mars 33435 Defrost Thermostat, Opens at 20°F, Closes at 5°F quantity
50-90°F Remote Temperature Selector

Maxitrol

SKU: TD92-0509
$341.23
MSRP: $392.41
You save 15%
Maxitrol TD92-0509 50-90°F Remote Temperature Selector quantity
55-90°F Wall Mount Space Temperature Selector

Maxitrol

SKU: TD244
$179.23
MSRP: $206.11
You save 15%
Maxitrol TD244 55-90°F Wall Mount Space Temperature Selector quantity
40-90°F Room Override Thermostat for Modulating Systems

Maxitrol

SKU: T115
$203.21
MSRP: $233.69
You save 15%
Maxitrol T115 40-90°F Room Override Thermostat quantity
34/70°F Manual Reset Low Limit DPDT Control

Dynacon

SKU: TF142-SODP20
$265.19
MSRP: $304.97
You save 13%
Dynacon TF142-SODP20 34/70°F Manual Reset Low Limit DPDT Control quantity
Separate Remote Sensor/Dial Thermostat with 6’6″ Capillary

Macon Controls

SKU: EVOLZ
$172.75
MSRP: $198.66
You save 15%
Macon Controls EVOLZ Separate Remote Sensor/Dial Thermostat 6'6" Capillary quantity
Thermostat (T-Stat) for Indirect Water Heater Tank

Lochinvar & A.O. Smith

SKU: 100208546
$308.56
MSRP: $354.84
You save 15%
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3 Stage Thermostat Control for Lochinvar & A.O. Smith

Lochinvar & A.O. Smith

SKU: 100208492
$632.00
MSRP: $726.80
You save 15%
Lochinvar & A.O. Smith 100208492 3 Stage Control (TSTAT) quantity
Limit Thermostat Control, OEM Replacement Part

Lochinvar & A.O. Smith

SKU: 100170640
$287.93
MSRP: $331.12
You save 15%
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Digital Temperature Control Panel Assembly, OEM Replacement

Lochinvar & A.O. Smith

SKU: 100164439
$1,769.00
MSRP: $2,034.35
You save 15%
Lochinvar & A.O. Smith 100164439 Digital Temp Ctrl Panel Assy quantity
Electronic Thermostat for Water Heating Systems

Lochinvar & A.O. Smith

SKU: 100164435
$1,958.00
MSRP: $2,251.70
You save 15%
Lochinvar & A.O. Smith 100164435 Electronic Thermostat quantity
Electronic Temperature Control for Water Heaters

Lochinvar & A.O. Smith

SKU: 100112838
$624.71
MSRP: $718.42
You save 15%
Lochinvar & A.O. Smith 100112838 Electronic Temperature Control quantity
Remote Element Controller, Proportional, 8′ Averaging, 4′ Capillary

Johnson Controls

SKU: T-8000-4
$1,521.41
MSRP: $1,749.62
You save 15%
Johnson Controls T-8000-4 Remote Element Controller, Proportional, 8' Averaging Element quantity
Remote Element Controller, Proportional Action, 15′ Capillary

Johnson Controls

SKU: T-8000-3
$1,521.41
MSRP: $1,749.62
You save 15%
Johnson Controls T-8000-3 Remote Element Controller, Proportional Action, 15' Capillary quantity
MR4 Four Stage Defrost Control, 24 Vac, ±1.8° Accuracy

Johnson Controls

SKU: MR4PMUHV-12
$573.89
MSRP: $659.97
You save 15%
Johnson Controls MR4PMUHV-12 MR4 Four Stage Defrost Control, 24 Vac quantity
Reset Control Module, LCD, Two SPDT Relays, Analog Output

Johnson Controls

SKU: C450RCN-3
$373.76
MSRP: $429.82
You save 15%
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Temperature Control, Two Pole, Open Low, 25/90°F Range, Outdoor Case

Johnson Controls

SKU: A72AE-1
$439.38
MSRP: $505.29
You save 15%
Johnson Controls A72AE-1 Temperature Control, 120-240 VAC, Two Pole, Outdoor quantity
100-170°F Manual Reset Open-Hi 6′ Capillary Temperature Controller

Johnson Controls

SKU: A70KA-1
$335.79
MSRP: $386.16
You save 15%
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Temperature Control, 120-240V, Single Pole, 35–80°F, Manual Reset

Johnson Controls

SKU: A70HA-2
$287.94
MSRP: $331.13
You save 15%
Johnson Controls A70HA-2 Temperature Control, 120-240 Vac, 35–80°F Range quantity
Two Circuit Temperature Control, A70HA-1G

Johnson Controls

SKU: A70HA-1G
$348.15
MSRP: $400.37
You save 15%
Johnson Controls A70HA-1G Two Circuit Temperature Control quantity
Temperature Control, 120-240V, SPST, Open Low, Manual Reset, 20′ Cap

Johnson Controls

SKU: A70HA-14
$332.71
MSRP: $382.62
You save 15%
Johnson Controls A70HA-14 Temperature Control, 120-240V, SPST, Manual Reset quantity
Temperature Control, Single Pole, 15-55°F, 20 ft Capillary

Johnson Controls

SKU: A70HA-1
$282.66
MSRP: $325.06
You save 15%
Johnson Controls A70HA-1 Temperature Control, Single Pole, 15-55°F, 20 ft Capillary quantity
Temperature Control, Single Pole, Open Low, 35–80°F, Auto Reset

Johnson Controls

SKU: A70GA-2
$277.15
MSRP: $318.72
You save 15%
Johnson Controls A70GA-2 Temperature Control, 120-240V, Single Pole, 35-80°F quantity
Temperature Control, Single Pole, Open Low, 15/55°F Range, Auto Reset

Johnson Controls

SKU: A70GA-1
$330.40
MSRP: $379.96
You save 15%
Johnson Controls A70GA-1 Temperature Control, 120-240V, Single Pole, Open Low quantity
Temperature Control, Single Pole, Open Low, 15–55°F, 20′ Capillary

Johnson Controls

SKU: A70BA-18
$258.61
MSRP: $297.40
You save 15%
Johnson Controls A70BA-18 Temperature Control, 120-240V, Single Pole, 15-55°F quantity
Electronic Temperature Controller, 24 VAC, NEMA 4X, -40 to 212°F

Johnson Controls

SKU: A421GEF-02
$185.45
MSRP: $213.27
You save 15%
Johnson Controls A421GEF-02 Electronic Temperature Controller, 24 VAC, NEMA 4X quantity
Electronic Temperature Controller, 24 VAC, -40 to 212°F Range

Johnson Controls

SKU: A421GBF-02
$123.03
MSRP: $141.48
You save 15%
Johnson Controls A421GBF-02 Electronic Temperature Controller, 24 VAC quantity
Electronic Temperature Control, 120/240V, Off-Cycle Defrost Timer

Johnson Controls

SKU: A421AED-02
$217.95
MSRP: $250.64
You save 15%
Johnson Controls A421AED-02 Electronic Temperature Control, 120/240V, Off-Cycle Defrost quantity
Electronic Temperature Control, 120/240V, Off-Cycle Defrost Timer

Johnson Controls

SKU: A421AED-01
$206.86
MSRP: $237.89
You save 15%
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Electronic Temperature Control, 120/240V, NEMA 4X, -40 to 212°F

Johnson Controls

SKU: A421AEC-02
$181.75
MSRP: $209.01
You save 15%
Johnson Controls A421AEC-02 Electronic Temperature Control, 120/240V, NEMA 4X quantity