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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K902-W White Double Pole WiFi Thermostat
King Electric Hoot Series WIFI Enabled White Thermostat - Programmable With Hoot Smart Phone App - Large LCD touchscreen display - Temperature Range 41-90F - 120/208/240 Volt - 2 Pole - Line Voltage - 16 Amp - For Baseboard, Fan Forced & Radiant Heat

KINGELECTRIC33510
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KT110 SPST 125-250V Thermostat Heat Only
TPI Corp. (Markel/Raywall/Fostoria) Bi-Metal Industrial Series - Rugged steel case - 6 Inch Leads, Bi-Metal T-stat, UPC# 534086 - Range: -10-110F - Wire Leads - C&F - Hardwired model rated for 22A resistive @125-250 VAC - Catalog #: 05340802

MARKEL534086
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KTD110 Thermostat 22 Amp -10-100F
TPI Corp. (Markel/Raywall/Fostoria) -10 to 100degF Range - Wire leads - SPDT - 6 Inch Leads - Temperature Scale: Cooler to Warmer - Catalog #: 05341702

MARKEL534178
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KTO121 120V Cooling Thermostat 6ft Cord
TPI Corp. (Markel/Raywall/Fostoria) Bi-Metal Thermostat -10-110F - 120 Volt - 6 Foot cord and plug - SPST Cool Only - Catalog #: 05342102

MARKEL534215
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M21DP Wall Thermostat
Robertshaw Climate/Mears Line Voltage Wall Mount Thermostat - Deluxe Model - Double Pole - With Built in Anticipator

MEARS10002
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M600M Line Voltage 2 Stage Thermostat
Robertshaw Climate/Mears Line Voltage Wall Mount Thermostat - Modulating Control - 2* separates the first and second stage - Each Switch 22 Amps - Ivory/Beige

MEARS10003
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M600S Two Circuit Ivory Thermostat
Robertshaw Climate/Mears Line Voltage Wall Mount Thermostat - Simultaneous switching (double circuit) - 45F to 75F - Accuracy Within 3F of setpoint - Simultaneous control of two heating loads.

MEARS10013
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M600SW Two Circuit White Thermostat
Robertshaw Climate/Mears Line Voltage Wall Mount Thermostat - Two Circuit - Each Switch 22 AMPS - Simultaneous switching control of two heating loads (double circuit) - 45F to 75F - Accuracy Within 3F of setpoint

MEARS10018
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M600THW Tstat
M600THW Tstat

QMARK685360154435
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M601TPW Tamper Resistant Thermostat
Qmark/Marley Mears Line Voltage Thermostat - 22 Amps at 120/208/240 Volts & 18 Amps at 277 Volts - 1-Pole, White - Snap action - Differential 4 Degrees - 45 to 75 deg F -

QMARK98319841490
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M601W SP Thermostat White
Robertshaw Climate/Mears Line Voltage SPST Wall Mount Thermostat - 45F to 75F - 22 amps @ 120, 208 or 240 Volts - 18 amps @ 277 Volts - White Color - Pigtail Leads UL - CSA - Single Pole

MEARS10014
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M602-25 DP Thermostat Ivory
Robertshaw Climate/Mears Line Voltage DPST wall mount thermostat, 45°F to 75°F, 25 amp 208/240V. Heavy Duty - Off Position - 25 AMP Switches (2 Switches, Each switch is 25 AMPS) Ivory/Beige - Double Pole

MEARS10015
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M602-25W DP Thermostat White
Robertshaw Climate/Mears Line Voltage DPST wall mount thermostat, 45°F to 75°F, 25 amp 208/240V. Heavy Duty - Off Position - 25 AMP Switches (2 Switches, Each switch is 25 AMPS) White - Double Pole

MEARS10022
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M611W Single Pole Thermostat White
SPST wall mount thermostat, built-in heat anticipator, 45°F to 75°F, 22 amp 208/240V, 18 amp 277V

QMARK98319841548
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M612W DoublePole Thermostat White
DPST wall mount thermostat, built-in heat anticipator, 45°F to 75°F, 22 amp 208/240V, 18 amp 277V

QMARK98319841568
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MD26 DoublePole Thermostat White
DPST wall mount thermostat, 45°F to 75°F, 22 amp 208/240V, 18 amp 277V

QMARK98319841681
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MS26 Single Pole Thermostat White
SPST wall mount thermostat, 45°F to 75°F, 22 amp 120V

QMARK98319841674
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MYSA BB LITE 120/240V WiFi Thermostat
Mysa Smart Thermostat LITE for electric baseboard, fan-forced & other line voltage heaters - BBL.2.0.01.NA-US - 120-240V - LED display with mechanical buttons - 3800 watts at 240V - 1900 watts at 120V - 16 Amps - 4.5" x 3" x 1.5" - FREE mobile app

MYSA821661107804
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MYSA BB V2-0 Baseboard Thermostat V2
Mysa Smart WiFi & NFC Thermostat for Electric Baseboard Heaters V2 - 120-240V - Also for fan-forced heaters - Adaptive Display Technology - Audible Touch Feedback - Mechanical relay control - 3800 watts at 240V - 5.1" x 3.5" x 0.8"

MYSA821661113898
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MYSA IN-FLOOR V1-0 Floor Thermostat
Mysa Smart WiFi Thermostat for Electric In-Floor Heating - Includes Class A GFCI and floor temperature sensor - 3,800 watts at 240V / 1900W max @ 120V - Compatible with most high voltage electric in-floor heating systems

MYSA821661208273
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Mysa Thermostat for AC & Mini-Splits
Mysa Smart WiFi Thermostat for AC and Mini-Split Heat Pumps - Replaces most LCD remotes for window, portable, and ductless mini-split heat pump AC units - Includes 5V micro USB connection, 6 foot cable and plug-in AC adapter

MYSA821661307129
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R841D1036/U Two Wire 24V Relay
Honeywell Electric Heater Relay - Use with 24 Vac thermostat to control electric heating equipment such as baseboard, ceiling cable & duct heaters - SPST Switching - requires transformer - switches up to a 5,000 W load

HONEYWELL10063
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R841E1068 Honeywell Electric Heat Relay
24 Volt transformer with two SPST relays. for two-wire 24 Vac thermostat to control electric heating equipment such as baseboard heaters. Switches up to a 5,000 W load (at 240/277V) - 22A @ 120 Vac, 208 Vac, 240 Vac; 19A @ 277 Vac Resistive

HNYWL10008
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RC840T-120 Electromechanical Relay
Honeywell Aube electromechanical relay with 24V-120V transformer. Compatible with 2 & 3-wire thermostats - all-in-one relay includes a built-in 24 V transformer. Compatible with 24V thermostats with 2-wire connections (R,W) or 3-wire connections (R,W,C)

HONEYWELL10022
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RK124EAA Low Voltage Stat
TPI Corp. (Markel/Raywall/Fostoria) No Mercury - Leveling not required - Long life sealed contacts - Fahrenheit & Celsius temperature scales - 2-3F rated differential - cUL Listed 35-75* F temp range - Catalog #: 05262002

MARKEL526203
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RK130EAA Low Voltage Tstat 50-90F
TPI (Markel/Raywall/Fostoria) Milivolt, Max 1 Amp, RK LowVage Heat Only Mercury Free Thermostat for Millivolt Systems 50-90F, Positive off, Does not contain Mercury, Fahrenheit & Celsius temperature scales, 2-3F rated differential, UL listed, Cat. # 052

MARKEL526050
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RK134EAA Low Volt Wall Thermostat
TPI Corp. (Markel/Raywall/Fostoria) RK Series Low Voltage Thermostats - Heat Only Milivolt Low Volt - Wall Thermostat - Catalog #: 05263202

MARKEL526326
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RKWP1AA Wall Plate for RK Series Stat
TPI Corp. (Markel/Raywall/Fostoria) RK Series Low Voltage Thermostats Accessory - Wall Plate for RK Series Thermostat - Catalog #: 05261402

MARKEL526142
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S2022H10AA Single Pole 22 Amp White Stat
TPI Corp. (Markel/Raywall/Fostoria) Series 2000 Line Voltage Thermostat - White - 22 Amp - Single Pole with leads - Heat Only - 277 Volts AC - Catalog #: 05028402

MARKEL502849
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S2025H10AA 25A Wall Thermostat
TPI Corp. (Markel/Raywall/Fostoria) 25 amp Line Voltage - Heat Only - single pole - White - 120V to 277V Operating Voltage - 50F to 90F Temperature Range - Catalog #: 05029102

MARKEL502917

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