Skip to content
HVAC Controls and Thermostats

HVAC Controls and Thermostats Total Products: 3099

Sub Collections

Low Voltage Programmable Thermostats
Low Voltage Programmable Thermostats
Wi-Fi Programmable Low Voltage Thermostats
Wi-Fi Programmable Low Voltage Thermostats
OEM Thermostat Replacement Parts
OEM Thermostat Replacement Parts
Low Voltage Non-Programmable Analog Thermostats
Low Voltage Non-Programmable Analog Thermostats
Line Voltage Non-Programmable Analog Thermostats
Line Voltage Non-Programmable Analog Thermostats
Low Voltage Non-Programmable Digital Thermostats
Low Voltage Non-Programmable Digital Thermostats
Pneumatic Relays
Pneumatic Relays
Fan Control Switches
Fan Control Switches
Humidity Controls
Humidity Controls
Heat Exchanger Replacement Elements
Heat Exchanger Replacement Elements
Shell and Tube Heat Exchangers
Shell and Tube Heat Exchangers
Fan Coil Unit Thermostats
Fan Coil Unit Thermostats
HVAC Relays
HVAC Relays
Remote-Bulb Sensor Temperature Controls
Remote-Bulb Sensor Temperature Controls
Electric Actuators
Electric Actuators
Fireplace Thermostats and Remote Control Kits
Fireplace Thermostats and Remote Control Kits
Defrost Thermostats
Defrost Thermostats
Portable Heating and Cooling Plug-In Line Voltage
Portable Heating and Cooling Plug-In Line Voltage
Temporary Construction Thermostats
Temporary Construction Thermostats
Air Vents
Air Vents
Steam Traps
Steam Traps
Line Voltage Programmable Thermostats
Line Voltage Programmable Thermostats
HVAC Conduit Adapters
HVAC Conduit Adapters
OEM Thermostats
OEM Thermostats
Air Coil and Bi-Metal Sensor Temperature Controls
Air Coil and Bi-Metal Sensor Temperature Controls
Wi-Fi and Wireless Thermostat Connectivity Accesso
Wi-Fi and Wireless Thermostat Connectivity Accesso
Direct and Intermittent Ignition Igniters
Direct and Intermittent Ignition Igniters
Furnace Control Boards
Furnace Control Boards
Building Automation System Thermostat Controls
Building Automation System Thermostat Controls
Temperature Sensors
Temperature Sensors
Electric Actuator Accessories
Electric Actuator Accessories
Damper Linkages Crank Arms and Push Rods
Damper Linkages Crank Arms and Push Rods
HVAC Electrical Switches
HVAC Electrical Switches
Pneumatic Valves
Pneumatic Valves
Furnace Ignition Modules
Furnace Ignition Modules
Gas Valves
Gas Valves
Pilot Assemblies
Pilot Assemblies
Gas Appliance Controls
Gas Appliance Controls
Electric Appliance Controls
Electric Appliance Controls
Flame Sensors
Flame Sensors
Plate Heat Exchangers
Plate Heat Exchangers
Snap Disc Thermostats
Snap Disc Thermostats
Sequencers
Sequencers
Thermostat Wall Cover Plates and Mounting Kits
Thermostat Wall Cover Plates and Mounting Kits
Thermostat Remote Sensors
Thermostat Remote Sensors
Line Voltage Non-Programmable Digital Thermostats
Line Voltage Non-Programmable Digital Thermostats
Air Pressure Switches
Air Pressure Switches
Boiler Controls
Boiler Controls
Boiler Temperature Limit Controls
Boiler Temperature Limit Controls
Static and Total Pressure Probes
Static and Total Pressure Probes

Filters

$
$
Furnace Control Board 120V AC Control

Furnace Control Board 120V AC Control

WHITE-RODGERS
$257.03 - $257.03
$257.03
$257.03 - $257.03
$257.03

Furnace Control Board Replacement Type OEM Board Type Integrated Compatible with Brand Lennox White-Rodgers OEM Replacement Part Number 100925-01 1...

View full Details
$257.03 - $257.03
$257.03
$257.03 - $257.03
$257.03
Valve And Actuator Pneumatic Pipe 1/2 In

Valve And Actuator Pneumatic Pipe 1/2 In

SIEMENS
$189.96 - $189.96
$189.96
$189.96 - $189.96
$189.96

Pneumatic Control Valve Globe Pipe (In.) 1/2 NPT Valve Body Material Bronze Width (In.) 4 in Height (In.) 4 in Valve Type 2-Way NO Cv 4 Spring Rang...

View full Details
$189.96 - $189.96
$189.96
$189.96 - $189.96
$189.96
Pneumatic Tstat Heat or Cool 1Pipe Low

Pneumatic Tstat Heat or Cool 1Pipe Low

SIEMENS
$161.75 - $161.75
$161.75
$161.75 - $161.75
$161.75

Pneumatic Thermostat Direct Acting 1 Pipe Heating and Cooling Single Temperature Control Air Pressure 3 to 15 psi Air Connections 5/32 in Barb Elem...

View full Details
$161.75 - $161.75
$161.75
$161.75 - $161.75
$161.75
Linear Pneumatic Actuator Pivot

Linear Pneumatic Actuator Pivot

POWERS CONTROLS
$187.81 - $187.81
$187.81
$187.81 - $187.81
$187.81

Linear Pneumatic Actuator Operating PSI Range 3 to 7 Max Air Pressure 20 psi Stroke 2 3/8 in Nominal Spring Range 8 to 13 psi Mounting Type Pivot N...

View full Details
$187.81 - $187.81
$187.81
$187.81 - $187.81
$187.81
Cal-Stat Tstat Basic 2 1/2in insertion

Cal-Stat Tstat Basic 2 1/2in insertion

VULCAN
$138.90 - $138.90
$138.90
$138.90 - $138.90
$138.90

Cal-Stat Thermostat Thermostat Type Process Thermostat Sheath Dia 1/2 in Overall Length 3 1/4 in Insertion Depth 2 5/8 in Switch Action Close on Ri...

View full Details
$138.90 - $138.90
$138.90
$138.90 - $138.90
$138.90
Low Volt NP Analog Tstat Heat/Cool

Low Volt NP Analog Tstat Heat/Cool

EMERSON
$54.15 - $54.15
$54.15
$54.15 - $54.15
$54.15

Low Voltage Thermostat Terminal Designations A B G O RC RH W Y System Switching Heat-Cool-Off Fan Switching Auto-On Dual Transformer Compatible Yes...

View full Details
$54.15 - $54.15
$54.15
$54.15 - $54.15
$54.15
Low Volt NP Analog Tstat Heat/Cool

Low Volt NP Analog Tstat Heat/Cool

EMERSON
$50.73 - $50.73
$50.73
$50.73 - $50.73
$50.73

Low Voltage Thermostat Terminal Designations A B G O RC RH W Y System Switching Heat-Cool-Off Fan Switching Auto-On Dual Transformer Compatible Yes...

View full Details
$50.73 - $50.73
$50.73
$50.73 - $50.73
$50.73
Time Delay Relay No914096

Time Delay Relay No914096

NORDYNE
$97.52 - $97.52
$97.52
$97.52 - $97.52
$97.52

Time Delay Relay No914096

$97.52 - $97.52
$97.52
$97.52 - $97.52
$97.52
Time Delay Relay No105144000R

Time Delay Relay No105144000R

NORDYNE
$81.70 - $81.70
$81.70
$81.70 - $81.70
$81.70

Time Delay Relay No105144000R

$81.70 - $81.70
$81.70
$81.70 - $81.70
$81.70
Time Delay Relay Mh5H0717900000

Time Delay Relay Mh5H0717900000

MODINE PARTS
$134.72 - $134.72
$134.72
$134.72 - $134.72
$134.72

Time Delay Relay Mh5H0717900000

$134.72 - $134.72
$134.72
$134.72 - $134.72
$134.72
Time Delay Relay Le58C99

Time Delay Relay Le58C99

LENNOX
$68.60 - $68.60
$68.60
$68.60 - $68.60
$68.60

Time Delay Relay Le58C99

$68.60 - $68.60
$68.60
$68.60 - $68.60
$68.60
Time Delay Relay 300S Mq028210138

Time Delay Relay 300S Mq028210138

MCQUAY/DAIKIN
$195.44 - $195.44
$195.44
$195.44 - $195.44
$195.44

Time Delay Relay 300S Mq028210138

$195.44 - $195.44
$195.44
$195.44 - $195.44
$195.44
Time Delay Relay Kit No918476

Time Delay Relay Kit No918476

NORDYNE
$127.26 - $127.26
$127.26
$127.26 - $127.26
$127.26

Time Delay Relay Kit No918476

$127.26 - $127.26
$127.26
$127.26 - $127.26
$127.26
Time Delay Fuse 30A 600V Ms81138

Time Delay Fuse 30A 600V Ms81138

MARS
$26.09 - $26.09
$26.09
$26.09 - $26.09
$26.09

Time Delay Fuse 30A 600V Ms81138

$26.09 - $26.09
$26.09
$26.09 - $26.09
$26.09
Suction Pressure Switch 25 Le79J08

Suction Pressure Switch 25 Le79J08

LENNOX
$64.86 - $64.86
$64.86
$64.86 - $64.86
$64.86

Suction Pressure Switch

$64.86 - $64.86
$64.86
$64.86 - $64.86
$64.86
Temperature Sensor Thermistor 6ft Probe

Temperature Sensor Thermistor 6ft Probe

MAMAC PARTS
$19.72 - $19.72
$19.72
$19.72 - $19.72
$19.72

Temperature Sensor Display Type None Sensing Element Type Thermistor Probe Length 6 ft Electrical Connection Type Screw Terminals NEMA Rating 4 Mou...

View full Details
$19.72 - $19.72
$19.72
$19.72 - $19.72
$19.72
SENSORS(TEMP/HUMIDITY/ETC.)

SENSORS(TEMP/HUMIDITY/ETC.)

MAMAC PARTS
$22.19 - $22.19
$22.19
$22.19 - $22.19
$22.19

Strap On 1K Sensor 2 in Mpte-704-A-14 Mounting Location Surface Mount Probe Length 6 ft Electrical Connection Type Screw Terminals Enclosure Materi...

View full Details
$22.19 - $22.19
$22.19
$22.19 - $22.19
$22.19
Steam Cylinder Canister Ley3481

Steam Cylinder Canister Ley3481

LENNOX
$358.44 - $358.44
$358.44
$358.44 - $358.44
$358.44

Steam Cylinder Canister Ley3481

$358.44 - $358.44
$358.44
$358.44 - $358.44
$358.44
Thermostat

Thermostat

MCQUAY/DAIKIN
$595.17 - $595.17
$595.17
$595.17 - $595.17
$595.17

Static Pressure Sensor Kit Mq090009001

$595.17 - $595.17
$595.17
$595.17 - $595.17
$595.17
Ss Heat Exchanger Le57W87

Ss Heat Exchanger Le57W87

LENNOX
$1,183.88 - $1,183.88
$1,183.88
$1,183.88 - $1,183.88
$1,183.88

Heat Exchanger Cover Plate Material Stainless Steel Weight 46 lb

$1,183.88 - $1,183.88
$1,183.88
$1,183.88 - $1,183.88
$1,183.88
CONTROLS - PRESSURE

CONTROLS - PRESSURE

LENNOX
$148.16 - $148.16
$148.16
$148.16 - $148.16
$148.16

Spst Pressure Switch Le52M40 Contact Form SPST

$148.16 - $148.16
$148.16
$148.16 - $148.16
$148.16
CONTROLS - PRESSURE

CONTROLS - PRESSURE

MARS
$88.09 - $88.09
$88.09
$88.09 - $88.09
$88.09

Spst Open Fall Sw 400Ci 300Co Ms43307 Sample Line Connection Size 1/4 in Sample Line Connector Type Flare Input Voltage 24 to 250V Contact Form SPS...

View full Details
$88.09 - $88.09
$88.09
$88.09 - $88.09
$88.09
CONTROLS - PRESSURE

CONTROLS - PRESSURE

MARS
$91.53 - $91.53
$91.53
$91.53 - $91.53
$91.53

Spst Open Fall Sw 225Ci 150Co Ms43304 Sample Line Connection Size 1/4 in Sample Line Connector Type Flare Input Voltage 24 to 250V Contact Form SPS...

View full Details
$91.53 - $91.53
$91.53
$91.53 - $91.53
$91.53
SENSORS(TEMP/HUMIDITY/ETC.)

SENSORS(TEMP/HUMIDITY/ETC.)

MCDONNELL MILLER
$381.30 - $381.30
$381.30
$381.30 - $381.30
$381.30

Singlelevelsensor High 176199 Mmrs-1-Hp Display Type Not Applicable Display Units Not Applicable Display Resolution Not Applicable Overall Length 3...

View full Details
$381.30 - $381.30
$381.30
$381.30 - $381.30
$381.30

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare