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

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.

76 items

Page
Set Descending Direction
per page
  1. 1A65-641 WR-65 SPST Thermostat
    1A65-641 SPST Thermostat, 40°F to 85°F, 22 amp 120V, Single Pole, wall mount

    WR10001

    $27.15

    Stock: 12

    Quick Shop Compare
  2. EC-TS Electronic 30F to 110F Thermostat
    Raychem (nVent) P000001115 Pipe, Slab or Ambient Sensing Electronic Thermostat with 25 ft thermistor for pipe freeze protection, floor heating & snow melting - NEMA 4X - Wall mounted - 100–277 Vac - Part #: P000001115

    RAYCHEM10151

    $283.41

    Stock: 4

    Quick Shop Compare
  3. TG1 Plastic Stat Guard
    TPI Corp. (Markel/Raywall/Fostoria) TG Series Thermostat Guard - Plastic Stat Guard/ 6.25 Inch x 3.625 Inch x 3.25 Inch Opening - Catalog #: 05891202

    MARKEL589123

    $22.55

    Stock: 0

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

    MARKEL534215

    $34.10

    Stock: 14

    Quick Shop Compare
  5. 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

    $30.80

    Stock: 4

    Quick Shop Compare
  6. 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

    $30.80

    Stock: 0

    Quick Shop Compare
  7. 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

    $72.60

    Stock: 1

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

    MARKEL528078

    $229.35

    Stock: 1

    Quick Shop Compare
  9. EPETP8S 22A SPDT Ex Proof Thermostat
    TPI Corp. (Markel/Raywall/Fostoria) EPET Series Hazardous Location Thermostat - Explosion Proof - SPDT Single Pole Bi-Metal - 50-90F - 22 Amp 120-480VAC - Casting tapered top and bottom for 3/4” conduit - Catalog #: 05280602

    MARKEL528061

    $229.35

    Stock: 2

    Quick Shop Compare
  10. 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

    $12.65

    Stock: 3

    Quick Shop Compare
  11. 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

    $3.30

    Stock: 1

    Quick Shop Compare
  12. 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

    $10.45

    Stock: 6

    Quick Shop Compare
  13. ET9SRTS Cool Only Thermostat 22 amp
    TPI Corp. (Markel/Raywall/Fostoria) SPST Cool Only Thermostat with thermometer, terminals, 50-90F - Cooling only - 120-277V - Fahrenheit & Celsius Temperature Scale - Shadow White Color - Catalog #: 05239102

    MARKEL523912

    $16.50

    Stock: 6

    Quick Shop Compare
  14. ET9S4TS Single Pole Thermostat
    TPI Corp. (Markel/Raywall/Fostoria) 120-277, Single Pole Thermostat, 35F-75F Range, 22 Amp rated - SPST Heat Only Thermostat w thermometer, terminals, 35-75F

    MARKEL523905

    $17.60

    Stock: 0

    Quick Shop Compare
  15. ET9D4TS Double Pole Thermostat
    TPI Corp. (Markel/Raywall/Fostoria) 120-277, Double Pole Thermostat, 35F-75F Range, 22 Amp rated - DPST Heat Only Thermostat w thermometer, terminal, 35-75F

    MARKEL523868

    $19.80

    Stock: 5

    Quick Shop Compare
  16. 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

    $24.20

    Stock: 4

    Quick Shop Compare
  17. HLT1 Hazardous Location Thermostat
    TPI Corp. (Markel/Raywall/Fostoria) SPDT - Capillary - 22A @120-277VAC-24VAC - 40-110F - for HLA Series Hazardous Location Fan Forced Unit Heater - Catalog #: 05231502

    MARKEL523158

    $314.60

    Stock: 1

    Quick Shop Compare
  18. 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

    $34.10

    Stock: 3

    Quick Shop Compare
  19. 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

    $29.70

    Stock: 2

    Quick Shop Compare
  20. 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

    $23.10

    Stock: 2

    Quick Shop Compare
  21. A6176 Low Voltage Wall Thermostat
    TPI Corp. (Markel/Raywall/Fostoria) Heat only for 24V heating systems - White color - Temperature range - 50 - 90F - Catalog #: 02600002

    MARKEL260008

    $48.05

    Stock: 1

    Quick Shop Compare
  22. HE-2 White 22 Amp Thermostat
    King Electric - EURO ANTICIPATED, DOUBLE POLE - White - LINE VOLTAGE WALL THERMOSTAT

    KINGELECTRIC19066

    $30.48

    Stock: 0

    Quick Shop Compare
  23. HWP120 120V Programmable Thermostat
    King Electric 2 Circut Line Voltage 12.5 Amp

    KINGELECTRIC19047

    $118.21

    Stock: 1

    Quick Shop Compare
  24. 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

    $128.50

    Stock: 14

    Quick Shop Compare
  25. T675A1532 SPDT T-stat
    Honeywell Remote Temp Control, 160F-260F Range, 1 SPDT, Copper Bulb, 5 ft. Capillary, 3.6F-12F Diff. - Remote bulb thermostats regulate temperature of air or liquids in ducts, pipes, tanks and boilers.

    HONEYWELL10071

    $141.09

    Stock: 0

    Quick Shop Compare
  26. TH5110D1006 Low Volt Digital Thermostat
    Honeywell FocusPRO 5000 non-programmable digital thermostat - Large Backlit Screen - White - Up to 1 Heat/1 Cool Conventional Systems and Heat Pumps with No Auxiliary Heat

    HONEYWELL10053

    $57.53

    Stock: 0

    Quick Shop Compare
  27. TH5110D1022 Low Volt Digital Thermostat
    Honeywell FocusPRO 5000 non-programmable digital thermostat - Large Screen Premier White Heating & Cooling Thermostat with R, Rc, C, W (O/B), Y, G terminals - 1 Heat/1 Cool

    HONEYWELL10026

    $62.73

    Stock: 0

    Quick Shop Compare
  28. SBKT-5 60ft F THERMO ONLY ST A
    Chromalox Part (PCN) #: 386185

    CHROM386185

    $0.00

    Stock: 0

    Quick Shop Compare
  29. SBKT-3SIL BT TERM KIT W/STAT ST A
    Chromalox Part (PCN) #: 386038

    CHROM386038

    $76.25

    Stock: 0

    Quick Shop Compare
  30. SBKT-2SIL BT TERM KIT W/STAT ST A
    Chromalox Part (PCN) #: 386020

    CHROM386020

    $76.25

    Stock: 0

    Quick Shop Compare

76 items

Page
Set Descending Direction
per page

Copyright © 2004-2019