HVAC Controls

Increase energy savings and easily control heating and cooling systems with HVAC controls. Utilize easy-to-install fresh air ventilation panels, furnace control boards, HVAC control boards, building automation panels, and kits to introduce clean air into buildings. Control multiple aspects of a system with highly universal digital controls. Also, shop our selection of replacement parts for controllers and larger equipment, defrost controllers, even fireplace controls. Our specialty controls selection addresses unique problems that push the boundaries of innovation within the industry. If you are a contractor check out items like the Wireless Lodge Watch from iO HVAC Controls or the Duel Fuel Kit.

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Showing 1105–1152 of 4050 resultsSorted by popularity

CO sensor, 0–125 ppm range, dual 4-20mA & 2-10VDC outputs

Automation Components Inc (ACI)

SKU: 107556
$611.44
MSRP: $703.16
You save 15%
ACI 107556 Carbon Monoxide Sensor 0-125ppm 4-20mA / 2-10VDC quantity
PWM In/Out Dual Valve Pressure Transducer, 0-15 PSI Range

Automation Components Inc (ACI)

SKU: 106333
$364.49
MSRP: $419.16
You save 15%
Read more
Freeze stat with 6-ft capillary, manual reset, 1 SPDT switch

Automation Components Inc (ACI)

SKU: 106295
$216.73
MSRP: $249.24
You save 13%
ACI 106295 Freeze Stat 6' Capillary Manual Reset 1 SPDT quantity
Freeze protection stat, 10 ft capillary, manual reset, 2 SPDT

Automation Components Inc (ACI)

SKU: 106293
$267.75
MSRP: $307.91
You save 13%
ACI 106293 Freeze Stat 10' Capillary Manual Reset 2 SPDT quantity
Freeze stat with 10-ft capillary, manual reset, 1 SPDT output

Automation Components Inc (ACI)

SKU: 106291
$237.51
MSRP: $273.14
You save 13%
ACI 106291 Freeze Stat 10' Capillary Manual Reset 1 SPDT quantity
Freeze protection stat, 20′ capillary, auto reset, dual SPDT

Automation Components Inc (ACI)

SKU: 105904
$255.78
MSRP: $294.15
You save 15%
Read more
Freeze stat with 20 ft capillary, manual reset, dual SPDT

Automation Components Inc (ACI)

SKU: 102484
$267.13
MSRP: $307.20
You save 13%
ACI 102484 Freeze Stat 20 ft Capillary Manual Reset 2 SPDT quantity
Freeze stat with 20′ capillary, auto-reset, and 1 SPDT switching

Automation Components Inc (ACI)

SKU: 102483
$211.05
MSRP: $242.71
You save 13%
ACI 102483 Freeze Stat 20' Capillary Auto-Reset 1 SPDT Low-Limit Thermostat quantity
Freeze stat with 20-ft capillary, manual reset, 1 SPDT switch

Automation Components Inc (ACI)

SKU: 102482
$217.35
MSRP: $249.95
You save 15%
Read more
0-5VDC to 0-10 PSI dual valve pneumatic transducer

Automation Components Inc (ACI)

SKU: 102479
$333.96
MSRP: $384.05
You save 15%
ACI 102479 0-5VDC Input 0-10PSI Output Dual Valve Pneumatic Transducer quantity
Dual valve I/P transducer, 0-5VDC input, 0-10 PSI pneumatic output

Automation Components Inc (ACI)

SKU: 102477
$338.15
MSRP: $388.87
You save 13%
ACI 102477 0-5VDC Input 0-10 PSI Output Dual Valve I/P Transducer quantity
PWM, analog & float input to resistance output signal converter

Automation Components Inc (ACI)

SKU: 102469
$283.69
MSRP: $326.24
You save 15%
ACI 102469 PWM / Analog / Float Input to Resistance Output Signal Converter quantity
Floating point input to analog output transducer, 5/15/30/90 ranges

Automation Components Inc (ACI)

SKU: 102093
$165.79
MSRP: $190.66
You save 13%
Read more
Analog signal rescaling module for BAS/BMS applications

Automation Components Inc (ACI)

SKU: 102028
$118.86
MSRP: $136.69
You save 15%
ACI 102028 Analog Rescaling Module quantity
Analog signal rescaling and isolation module for BAS applications

Automation Components Inc (ACI)

SKU: 101794
$241.20
MSRP: $277.38
You save 13%
ACI 101794 Analog Rescaling Isolation Module quantity
Pressure switch, 1.25–12″ WC range, normally closed, manual reset

Automation Components Inc (ACI)

SKU: 101792
$288.29
MSRP: $331.53
You save 15%
Read more
Auto-reset pressure switch, 0.05–12″ WC range, 1/4″ port

Automation Components Inc (ACI)

SKU: 101788
$80.51
MSRP: $92.59
You save 15%
ACI 101788 Pressure Switch 0.05-12" WC Auto Reset 1/4" Port quantity
Analog input to dual SPDT relay output module with adjustable setpoints

Automation Components Inc (ACI)

SKU: 101785
$125.09
MSRP: $143.85
You save 15%
ACI 101785 Analog Input / Relay Output Module, 2 SPDT Adjustable quantity
Handheld assistant control panel for ABB ACS drives

ABB

SKU: ACS-AP-S
$252.00
MSRP: $289.80
You save 13%
ABB ACS-AP-S Assistant Control Panel quantity
Enclosed bypass control for VFD motor drive applications

ABB

SKU: 3AUA0000034480
$726.00
MSRP: $834.90
You save 15%
ABB 3AUA0000034480 Bypass Control with Enclosure quantity
24VAC DPST Electric Heat Load Control Relay with Normally Closed Contacts

Honeywell Home

SKU: R8229A1021
$128.63
MSRP: $147.92
You save 15%
Honeywell R8229A1021 Electric Heat Relay – 24VAC DPST Load Control Relay quantity
2″ 250# Flanged Globe Valve 21 Cv with M9184 Electric Actuator

Honeywell Home

SKU: 20-92-25-2A1-M9184
$10,158.79
MSRP: $11,682.61
You save 15%
Honeywell 20-92-25-2A1-M9184 2" 250# Flanged Globe Valve 21 Cv with M9184 Actuator quantity
DC2800 Series modulating hydronic control valve for HVAC systems

Honeywell Home

SKU: DC2800EE0S02400000
$1,698.33
MSRP: $1,953.08
You save 13%
Honeywell DC2800EE0S02400000 DC2800 Series Hydronic Control Valve Assembly quantity
0–4 PSI SPST Vaporstat for steam & boiler pressure control

Honeywell Home

SKU: L408J1033
$444.97
MSRP: $511.72
You save 15%
Honeywell L408J1033 Vaporstat Controller – 0–4 PSI SPST Pressure Control Switch quantity
24VAC Outdoor Reset Control Module Kit with Outdoor Sensor

Honeywell Home

SKU: W8735S1000
$471.07
MSRP: $541.73
You save 15%
Honeywell W8735S1000 AquaReset Kit 24VAC – Outdoor Reset Control Module with C7089U1006 Sensor quantity
240VAC replacement actuator motor for V4043A series zone valves

Honeywell Home

SKU: 40003916-023
$103.59
MSRP: $119.13
You save 13%
Honeywell 40003916-023 Replacement Motor 240VAC – V4043A Zone Valve Actuator quantity
10K Ohm NTC Type II 6″ Insertion HVAC Duct Temperature Sensor

Honeywell Home

SKU: C7776A1040
$59.86
MSRP: $68.84
You save 15%
Honeywell C7776A1040 Duct Probe Sensor – 10K Ohm NTC Type II 6" Insertion quantity
Tubing bender for 1/4″ O.D. pneumatic tubing — kink-free bends

Honeywell Home

SKU: CCT720B
$573.94
MSRP: $660.03
You save 15%
Honeywell CCT720B Tubing Bender for 1/4" O.D. Pneumatic Tubing quantity
On-Off Primary Burner Control with Prepurge & Postpurge, 120VAC

Honeywell Home

SKU: RM7896A1012
$1,716.86
MSRP: $1,974.39
You save 13%
Honeywell RM7896A1012 On-Off Primary Burner Control with Prepurge & Postpurge quantity
2-Way Normally Closed Low Pressure Gas Safety Shut-Off Valve

Honeywell Home

SKU: V5097A1004
$548.48
MSRP: $630.75
You save 15%
Honeywell V5097A1004 2-Way Normally Closed Low Pressure Gas Safety Shut-Off Valve quantity
2-Way 1/2″ FNPT VC Series Hydronic Zone Control Valve Assembly

Honeywell Home

SKU: VC7936BB1500
$60.31
MSRP: $69.36
You save 15%
Honeywell VC7936BB1500 2-Way 1/2" FNPT VC Series Zone Control Valve Assembly quantity
115V Electronic Unit Controller with Fan Cycling

Copeland

SKU: 943-0154-00
$173.88
MSRP: $199.96
You save 15%
Copeland 943-0154-00 115V Electronic Unit Controller with Fan Cycling quantity
Current relay kit for compressor overcurrent protection

Copeland

SKU: 940-C411-72
$70.99
MSRP: $81.64
You save 15%
Copeland 940-C411-72 Current Relay Kit quantity
Control assembly kit for natural gas heat pump systems

Century Motors

SKU: 100358465
$409.38
MSRP: $470.79
You save 15%
Century 100358465 Control Assembly Kit for Natural Gas Heat Pump quantity
SPDT auto reset air differential, vacuum & pressure switch

A.J. Antunes

SKU: JD-2-RED
$118.44
MSRP: $136.21
You save 15%
Read more
Auto reset SPDT air differential, vacuum & pressure switch, 1/8″ NPT

A.J. Antunes

SKU: JD-2-GREY
$118.44
MSRP: $136.21
You save 15%
Read more
Auto reset SPDT air differential, vacuum & pressure switch

A.J. Antunes

SKU: JD-2-BLUE
$118.44
MSRP: $136.21
You save 15%
Read more
24VAC dual fan & limit controller, 80–120°F fan / 150–300°F limit range

A.J. Antunes

SKU: 8742130013
$427.94
MSRP: $492.13
You save 15%
A.J. Antunes 8742130013 24VAC 2-SPST Dual Fan and Limit Controller w/ 10' Sensor quantity
24VAC dual fan & limit controller with 10′ sensor

A.J. Antunes

SKU: 8742020074
$307.34
MSRP: $353.44
You save 13%
A.J. Antunes 8742020074 24VAC 2-SPST Dual Fan and Limit Controller w/ 10' Sensor quantity
Digital freezestat, 30–75°F range, SPDT, 1–10 min adjustable timing

A.J. Antunes

SKU: 8563140040
$181.43
MSRP: $208.64
You save 15%
A.J. Antunes 8563140040 Digital Freezestat SPDT 30-75°F 115VAC 20' Sensor quantity
Digital freezestat, 30–75°F, SPDT, 1–10 min adjustable timing, 10′ sensor

A.J. Antunes

SKU: 8563120051
$215.93
MSRP: $248.32
You save 13%
A.J. Antunes 8563120051 30-75°F 115VAC Digital Freezestat SPDT w/ Adjustable Timing quantity
High Limit Control with Manual Reset, 100–220°F, 24VAC, 15′ Sensor

A.J. Antunes

SKU: 8512130013
$461.25
MSRP: $530.44
You save 15%
A.J. Antunes 8512130013 High Limit Control 100-220°F 24VAC Manual Reset 15' Sensor quantity
10,000 Ohm Thermistor with 20′ Cable, rated for 302°F

A.J. Antunes

SKU: 808000130
$74.98
MSRP: $86.23
You save 15%
A.J. Antunes 808000130 10,000 Ohm Thermistor with 20' Cable for TCF Controller quantity
Auto-reset high/low gas pressure switch with dual SPDT outputs

A.J. Antunes

SKU: 804112101
$313.49
MSRP: $360.51
You save 13%
A.J. Antunes 804112101 2-SPDT High & Low Gas Pressure Switch (RHLGP-A) quantity
Preset 2-port low gas pressure switch, 1–6″ W.C. range

A.J. Antunes

SKU: 803112505
$162.50
MSRP: $186.88
You save 13%
A.J. Antunes 803112505 LGP-A 1-6" Preset 2-Port Low Gas Pressure Switch quantity
SPST Normally Open Air Differential Pressure Switch, .17–1″wc

A.J. Antunes

SKU: 8024401045
$100.99
MSRP: $116.14
You save 15%
Read more
SPDT air differential pressure switch, .17–12″wc, 1/4″ compression fittings

A.J. Antunes

SKU: 8024206082
$97.29
MSRP: $111.88
You save 15%
Read more
SPDT Air Differential Pressure Switch, .17–6″ WC, FM Approved

A.J. Antunes

SKU: 8024204107
$97.29
MSRP: $111.88
You save 15%
A.J. Antunes 8024204107 SPDT Air Differential Pressure Switch, .17–6" WC quantity

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