We are an authorized distributor for Honeywell and other leading thermostat manufacturers.

Line voltage thermostats are typically used for electric radiant, convection or resistance heaters such as baseboard, cove and wall heaters.
Low voltage thermostats are used with central heating systems including furnaces, boilers, air conditioning, heat pumps and split systems. The wires aren’t as thick as you’ll find on line-voltage stats.

If you’re replacing a thermostat you can check which one you need by looking at your wiring. Line-voltage thermostats have two or four thick wires coming out of the back that are attached with wire nuts to wires in the wall. The wires are much larger than the wires on low-voltage thermostats.

Click on a sub-category below or scroll past them to see all the products in this category. You may also use the filters on the left to sort the products in this category.

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KT121 120 Volt 13 Amp Inline Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Columbus Electric KT-121 In-line Thermostat, bimetal sensing element, SPST Heat, max. 13 Amps @ 125 VAC Res., Temperature range -10° to 100° F - 6 ft cord and plug included - Catalog #: 05341002

MARKEL534109
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088L5135 Power Module with GFCI
Danfoss Power Module with GFCI - 15 Amp - Can Use Up To 5 Power Modules Per Thermostat - For Use With Programmable LX Thermostats Only

DANFOSS088L5135
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088L5137 LX205 Floor Thermostat
Danfoss LX Floor Heating Thermostat with Floor Sensor - 120V/240V/60Hz - 15 Amp (1800W at 120V & 3600W at 240V) - 40 to 104F Temp Range - Non Programmable - Class A GFCI (5ma Trip) - Includes Floor Sensor with 10ft Lead

DANFOSS088L5137
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1F80-361 Low Voltage Thermostat
White-Rodgers 80 Series Single Stage Thermostat - 5+1+1 Day Programmable - For 24 VAC or Millivolt Systems - Hardwired or Battery Powered - Large LCD with backlight - Permanent program retention during power loss - Terminals: RC, RH, C, W, Y, G, O, B

WR10051
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1G65-641 SPST Thermostat
White-Rodgers 1G65-641 SPST Thermostat, 40°F to 80°F, 22 amp 120V, Single Pole, wall mount

WR10053
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1G66-641 DPST Thermostat
White-Rodgers 1G66-641 DPST Thermostat, 40F to 80F, 22 amp 208/240V, 18 amp 277V, Double Pole (D.P.S.T.), wall mount

WR10054
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24A06G-1 Dual Level-Temp Silent Relay
White Rodgers Dual Level Temp Silent Relay and Transformer - Two SPST N.O. Switches 25 Amp Non Inductive Loads - 240VAC Input Voltage - Used To Control Two Separate Loads With A Single Low Voltage Thermostat (Purchased Separately)

WR10009
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2A37-1 White Rodgers Thermostat
Commercial Room Heavy Duty Space T-Stat (Heating and Cooling) - 20 to 90°F Range , 100V -120V/ 25amps, 240V/22amps, 277V/18amps Line Voltage SPST - Open On Rise Thermostat - Coiled Bulb - Adjustable Differential,

WR10006
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30000-000 50 TO 300F ST C
Chromalox Part (PCN) #: 305293

CHROM305293
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30002-000 50 TO 600F ST C
Chromalox Part (PCN) #: 305314

CHROM305314
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801-22 M601WT SP Thermostat Ivory
Robertshaw Climate/Mears Line Voltage Wall Mount Thermostat - Single Pole - With Thermometer - Ivory/Beige

MEARS10019
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A19ANC-1C 0-150F SPDT T-stat 10ft Cap
Johnson Controls Industrial Thermostat - C3RC - Rainproof - 0 to 150F - Single Pole Double Throw 10 Foot Capillary - Used with heat trace applications where rainproof enclosures are necessary or desirable

JOHNCTRL10001
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A19BAG-1C SPST 120V Thermostat
Johnson Controls 120 Volt SPST PLUG IN PORTABLE HEATER THERMOSTAT 35-95F - OPEN-HI,COIL BULB, W/PLUG AND 6 FOOT CORD - 15 AMP

JOHNCTRL10005
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AET9DWTS 125 to 277V DPST Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Thermostat - Double Pole 22 Amp - 125-277 Volt - With Wire Leads And Anticipator - 50 to 90 degF Temperature Range - with Built in Thermometer - Heat Only

MARKEL523837
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AET9SWTS SPST Heat Only Thermostat
TPI Corp. (Markel/Raywall/Fostoria) SPST Heat Only Thermostat w thermometer, wire leads, 50 - 90F - Catalog #: 05238402

MARKEL523844
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AR-115 7Ft Cap. Thermostat 0-100F
Chromalox Part (PCN) #: 269966 - AR Series Thermostat. Non-Indicating Temperature Controller with Pilot Light - Temperature control of any electrically heated solid, liquid or gas - Single Phase - 7 Foot Capillary Length - 0-100F Temperature Range

CHROM269966
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AR-214 7Ft Cap. Thermostat 60-250F
Chromalox Part (PCN) #: 263038 - AR Series Thermostat. Non-Indicating Temperature Controller - Temperature control of any electrically heated solid, liquid or gas - Single Phase - 7 Foot Capillary Length - 60-250F Temperature Range - Single Phase

CHROM263038
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AR-514 7Ft Cap. Thermostat 200-550F
Chromalox Part (PCN) #: 263046 - AR Series Thermostat. Non-Indicating Temperature Controller with Pilot Light - Temperature control of any electrically heated solid, liquid or gas - Single Phase - 7 Foot Capillary Length - 200-550F Temperature Range

CHROM263046
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ASAT402ZB Allia Zigbee 3.0 Thermostat
Stelpro Smart Home Wall Thermostat for use with Stelpro Allia Hub - White - 120/208/240 Volts - 2000/3400/4000 Watts - 16.7 Amps - works with all electric heaters (baseboards, convectors & fan heaters)

STELPRO626296674680
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AT72D1089 Transformer
Honeywell Foot mounted 120 Vac Transformer with 9 in. leadwires - 40 VA transformers power 24V systems including thermostats, gas valves and relays.

HONEYWELL10005
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CKT0121 Thermostat Cool Only
Coiled Capillary Sensor, SPST Cool Only Thermostat, 40-110F Range, 6ft Cord & Plug, 22 amp Rated 125-250-VAC Resistive

MARKEL534055
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CKT121 SPST Heat Only Thermostat
TPI Corp. (Columbus Electric) SPST Heat Only Thermostat - Coil capillary model - 6 Foot Cord/Plug - 40 - 110F Temperature Range - 13A resistive @125VAC - Rugged Black Steel Case Housing - UPC Code #: 686334534024 - Catalog #: 05340202

MARKEL534024
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CKTD110 Thermostat PCN:534048
TPI Corp. (Markel/Raywall/Fostoria) Columbus Electric SPDT Bulb and Capillary Thermostat - 22 Amp - 2 Degree Diff. - 40-110 Degrees F - Heat/Cool - Catalog #: 05340402

MARKEL534048
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CNTLSSPBMS Digital Touchscreen Control
Qmark/Marley SmartSeries Plus Digital Programmable touchscreen 2 stage thermostat runs 2/3 elements on stage 1 & full heat for stage 2. Comes with BACnet MS/TP BMS compatibility, 7 day scheduling - 24V .015 -1.0A @ 30V 3-wire

QMARK685360173726
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CTW155B SP Rain Tight Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Columbus Electric In-line Thermostat, bimetal sensing element, SPST Heat, max. 13 Amps @ 125 VAC Res., Temperature range -40° to 110° F - 6 ft cord and plug included - Catalog #: 05234502

MARKEL523455
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CTW255C DP Rain Tight Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Columbus Electric In-line Thermostat, bimetal sensing element, DPST Heat, max. 13 Amps @ 125 VAC Res., Temperature range -40° to 110° F - 6 ft cord and plug included - Catalog #: 05234602

MARKEL523462
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D2022H10BA 22A Double Pole TStat White
TPI Corp. (Markel/Raywall/Fostoria) Double pole with leads, 22 Amp - Heat Only - Includes positive off - 277 Volts AC - Catalog #: 05028502

MARKEL502856
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EPETD8D DPDT Ex Proof Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Explosion Proof Thermostat - 50-90F, 22 amp 125-277 vac, Class Group I C & D - Catalog #: 05380702

MARKEL538077
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EPETD8S SPDT Explosion Proof Thermostat
TPI Corp. (Markel/Raywall/Fostoria) Hazardous Location Thermostat - Single Phase, Bi-Metal, 22 Amps, 120-277V Supply Voltage, 50-90F Temp Range - Single Pole - Class Group I C & D - Catalog #: 05381002 - UPS Code: 686334538107

MARKEL538107
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EPETP8D DPDT Ex Proof Stat
TPI Corp. (Markel/Raywall/Fostoria) EPET Series Hazardous Location - Catalog #: 05280702

MARKEL528078

Line & Low Voltage Thermostats, Relays & Transformers, Industrial/Commercial Space Thermostats, Plug In Inline Thermostats, Thermostat Wire