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ThermoSlab® Electric Heating Cables for Concrete Slabs

ThermoSlab® floor heating cable provides energy-efficient radiant heat for concrete slab applications in residential and commercial spaces. Designed to be embedded directly within the slab, ThermoSlab® delivers consistent, long-lasting warmth that transforms the concrete mass into a highly effective heat reservoir. The system radiates gentle, even heat throughout the room, creating exceptional comfort while minimizing temperature fluctuations. Once installed, virtually any finished flooring—including tile, stone, engineered wood, luxury vinyl tile (LVT), and other compatible floor coverings—can be applied over the slab, providing flexible design options without sacrificing performance. The result is uniform, whole-room comfort and reliable radiant heat for years to come. 
ThermoSlab Electric Radiant Heat Cable and controller bundled kit system for installing in garages, basements and other concrete poured areas
Electric Radiant Heating Cable for concrete slabs and floors
Variety of different sized ThermoSlab Electric Radiant Heat Cable for basements, garages and other concrete poured applications
ThermoSlab® Concrete Electric Radiant Floor Heating Cables for quick and easy installation in basements and foundations and garages
ThermoSlab Electric Radiant Heat Cable for concrete slabs and floors shown with concrete cutout
ThermoSlab Electric Radiant Heat Cable and controller bundled kit system for installing in garages, basements and other concrete poured areas
Electric Radiant Heating Cable for concrete slabs and floors
Variety of different sized ThermoSlab Electric Radiant Heat Cable for basements, garages and other concrete poured applications
ThermoSlab® Concrete Electric Radiant Floor Heating Cables for quick and easy installation in basements and foundations and garages
ThermoSlab Electric Radiant Heat Cable for concrete slabs and floors shown with concrete cutout
  • Electric In-Floor Heating for Concrete
  • Easily fits any space with loose cable designed for concrete installation
  • Provides between 12-18W/ft² of heat output depending on cable spacing
  • Factory attached 20 ft. cold lead wire for a flexible connection to thermostat
  • Systems compatible with 120/208/240 supply voltages
  • Complete system includes heating cables, in-floor sensors, and wall-mounted thermostat

Install ThermoSlab® electric floor heating cable in concrete slabs for energy-efficient radiant floor heating in new construction projects. Designed for in-slab applications, ThermoSlab® electric heating cable delivers powerful heat output and long-lasting heat retention, providing consistent comfort throughout the space.

Installation Guide

Warranty

Who can help me choose the right ThermoTile® electric floor heating mat?
ThermoSlab® Electric Concrete Floor Heating Cable is designed to add comfortable radiant warmth directly inside a concrete slab or foundation. The rugged heating cable can be installed in concrete or in the sand beneath a slab, creating a permanent electric radiant floor heating system that works with the thermal mass of concrete to store and release heat over time.
Is ThermoSlab® Electric Concrete Floor Heating Cable safe for homes and businesses?
Yes. ThermoSlab® Concrete Slab Floor Heating Cables by ThermoSoft are designed as a safe electric concrete floor heating solution for residential and commercial spaces. ThermoSoft floor heating systems are ETL listed and go through thorough development and quality control testing, and. ThermoSlab® Electric Concrete Floor Heating Cables use a shielded heating cable design that emits virtually zero Electro Magnetic Field (EMF).
What floor types can ThermoSlab® Electric Concrete Floor Heating Cable be used under?
ThermoSlab® Concrete Electric Floor Heating Cables are installed inside or beneath a concrete slab or concrete foundation, so they can be used with most finished floor covering materials that are approved for installation over concrete. This may include ceramic and porcelain tile, natural stone, laminate, engineered wood, vinyl, carpet, and other floor coverings approved by the flooring manufacturer for use over a heated concrete slab.
How is ThermoSlab® Electric Concrete Floor Heating Cable installed?
ThermoSlab® Electric Concrete Floor Heating Cables are installed before the concrete slab is poured. Depending on the project, the heating cable may be secured to metal mesh, rebar, or another approved layout method before the concrete is poured. ThermoSlab® Electric Concrete Floor Heating Cables are electrically wired in parallel to a compatible floor heating thermostat. Always follow the ThermoSoft Installation Manual and have final electrical connections completed by a licensed electrician.
Will ThermoSlab® Electric Concrete Floor Heating Cable add height to my floor?
No. ThermoSlab® Electric Concrete Floor Heating Cable is embedded in the concrete slab or installed beneath the slab, so it does not add height to the finished floor assembly.
How deep does the concrete need to be for ThermoSlab® Electric Concrete Floor Heating Cable?
ThermoSlab® Electric Concrete Floor Heating Cables can be installed in concrete that is 2 inches or thicker. Always confirm the project details and follow the ThermoSoft Installation manual before installation.
What if I am not pouring a full 2 inches of new concrete?
If you are pouring less than 2 inches of new concrete, ThermoSlab® Electric Concrete Floor Heating Cable may not be the right fit for the project. In many thinner floor heating applications, ThermoTile® Electric Floor Heating Mats or ThermoTile® Electric Floor Heating Cable may be a better option. Contact ThermoSoft experts for help choosing the right electrical radiant heating system before ordering.
Can I use more than one ThermoSlab® Electric Concrete Floor Heating Cable in a room?
Yes. Many projects use multiple ThermoSlab® Electric Concrete Floor Heating Cables to cover the desired heated area. The cables are laid out together and electrically wired in parallel to the thermostat. They must not be daisy chained or extended in a series electrical connection.
Can ThermoSlab® Electric Concrete Floor Heating Cable be cut or shortened?
No. ThermoSlab® Electric Concrete Floor Heating Cable should never be cut, shortened, reshaped, or altered in the field. Choose the correct cable length and layout before installation or contact ThermoSoft US experts for layout assistance.
Can the cold lead wires of ThermoSlab® Electric Concrete Floor Heating Cable be shortened?
Yes. The cold lead wires do not produce heat and may be shortened, cut, or extended by a licensed electrician according to the ThermoSlab® Installation Manual and local code requirements.
What about areas not covered by ThermoSlab® Electric Concrete Floor Heating Cable?
Not every area of the slab needs to be heated. Finished flooring can be installed as normal over both heated and non-heated areas of the concrete slab. ThermoSoft US experts can help you review the layout for optimal coverage.
Can ThermoSlab® Electric Concrete Floor Heating Cable really stand up to a concrete pour?
Yes. ThermoSlab® Electric Concrete Floor Heating Cable is a rugged heating cable designed specifically for new concrete slab applications. We highly recommend using an InstAlarm Monitor during installation. The InstAlarm Monitor connects to the lead wires and sounds an alert if the heating cable is damaged during installation.
How many Watts per square foot does ThermoSlab® Electric Concrete Floor Heating Cable produce?
ThermoSlab® Electric Concrete Floor Heating Cable produces approximately 14 Watts per square foot when installed at standard 5-inch (on center) spacing. Actual output may vary if cable spacing is adjusted for the specific project.
How much does ThermoSlab® Electric Concrete Floor Heating Cable cost to operate?
Operating cost depends on the heated area, local electric rates, slab insulation, thermostat settings, and usage. Because concrete mass stores and releases heat over time, ThermoSlab® Electric Concrete Floor Heating Cable may be used differently than a surface level floor electric heating system. For a project specific estimate, contact ThermoSoft US experts with the room size, slab details, and planned cable layout.
How warm does ThermoSlab® Electric Concrete Floor Heating Cable make the floor?
A properly installed ThermoSlab® Electric Concrete Floor Heating Cable system can typically provide a comfortable floor temperature increase above the room’s ambient temperature. In many applications, the system can provide about 10 to 15 degrees Fahrenheit of temperature difference above ambient room temperature. Actual results depend on the room, slab construction, insulation, thermostat temperature settings, floor covering, and installation conditions.
How long does ThermoSlab® Electric Concrete Floor Heating Cable last?
ThermoSlab® Electric Concrete Floor Heating Cables are very reliable; they have no moving parts and do not require regular maintenance once installed correctly and left undisturbed. The heating mats carry a 10-year warranty. Thermostats are covered separately according to the thermostat warranty. Buy with confidence.
Can ThermoSoft help with my ThermoSlab® Electric Concrete Floor Heating Cable layout?
ThermoSoft’s US experts can help confirm cable size, layout, voltage, thermostat needs, and installation approach before you order.
1 Heating Cable
2 Thermostat
3 Accessories
4 Tools

Combine cables as needed to fit open walkable space, avoiding areas covered by cabinets, vanities or other permanent fixtures. The heating cable cannot be shortened, so avoid over-filling. Each cable will connect to the thermostat, so larger cables will reduce required connections. At 5" spacing on a sole thermostat, 120V cables cover up to 122 ft²; 240V cables cover up to 244 ft². DO NOT MIX VOLTAGES. Contact us for project assistance or help finding a local dealer/installer.
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Heating Cable
2 Thermostat
3 Accessories
4 Tools
Thermostat

A floor heating thermostat is necessary to control your radiant heat system. Most of our floor heating thermostats are dual-voltage and include a 5ma GFCI, unlike models from online warehouse retailers. A thermostat is capable of a 15-Amp load; adding a power module or relay will increase system load capacity. Each includes a floor sensor, but a backup is recommended. Select 1 thermostat for each zone desired. Contact an expert for guidance.

Choose Setting

Programmable

Manual

  • WiFi touchscreen thermostat for smart floor heating control
    OJ Wi-Fi Enabled Touch Screen Thermostat for Electric Radiant Floor Heating
    UWG4-4999
    $294.95 View
  • Smart WiFi and Bluetooth thermostat for radiant floor heating
    OJ WiFi LED Touch Thermostat for Electric Radiant Floor Heating
    UWG5-4999
    $229.95 View
  • Touchscreen programmable thermostat for floor heating control
    OJ Touch Screen Thermostat for Electric Radiant Floor Heating
    UDG4-4999
    $207.20 View
  • Touchscreen thermostat for radiant floor heating systems
    OJ Touch Screen Thermostat for Electric Radiant Floor Heating - Black Color
    UDG4-4999-N4
    $207.20 View
  • Programmable thermostat for heated floor temperature control
    Aube Dual Voltage Programmable Thermostat With GFCI for Electric Radiant Floor Heating Systems
    TH115-AF-GA/U
    $179.99 View
  • Advanced programmable thermostat for heated floors
    OJ Advanced Programmable Thermostat for Electric Radiant Floor Heating
    UDG-4999
    $160.95 View
  • Manual thermostat for electric radiant floor heating systems
    Aube 120/240V Manual Thermostat Controller for Electric Radiant Floor Heating Systems
    TH114-AF-GA/U
    $159.99 View
  • Simple manual thermostat for electric floor heating
    OJ Touch Thermostat with built-in GFCI for Electric Radiant Floor Heating
    UTN5-4999
    $159.95 View

    • Choose Other Components:

  • Floor heating temperature sensor probe for accurate in-floor temperature control
    Floor heating Temperature Backup Sensor - 15Ft.
    AC112-01/U
    $19.95 View
  • Thermostat conduit kit for electric floor heating installation with connectors
    Electric Floor Heating Thermostat Installation Conduit Kit
    IK-CON
    $44.95 View
    • Heating Cable
    Thermostat
    3 Accessories
    4 Tools
    Choose Accessories
  • Cable fault alarm monitor for electric floor heating installation
    InstAlarm Circuit Monitor for Electric Radiant Floor Heating Installation
    INSTALRM
    $24.95 View
  • Digital multimeter for testing electric floor heating systems
    Electric Radiant Floor Heating Digital Multimeter
    MULTIMTR
    $19.95 View
  • Power module expansion for radiant floor heating thermostats
    Power Module Expansion for Electric Radiant Floor Heating Thermostats
    USG-4000
    $109.95 View
    • Heating Cable
    Thermostat
    Accessories
    4 Tools
    Choose Kits and Tools
  • Floor heating install kit with alarm monitor and trowel tool
    Basic Electric Radiant Floor Heating Installation Kit
    IK-TA
    $29.95 View
  • Complete radiant floor install kit with monitor, trowel, and multimeter
    Advanced Electric Radiant Floor Heating Installation Kit
    IK-TAM
    $44.95 View
  • Professional floor heating install kit with tools and kneepads
    Deluxe Electric Radiant Floor Heating Installation Kit
    IK-TAMK
    $55.95 View
  • Professional installation trowel for radiant heated floors
    3/8" Notch Trowel for Electric Floor Heating Installation
    TRWL3838
    $12.95 View
  • Notched trowel for installing floor heating mortar
    1/2" Notch Trowel for Electric Floor Heating Installation
    TRWL3812
    $14.89 View
  • Protective kneepads for radiant floor heating installers
    Ultra-Light Kneepads For Electric Radiant Floor Heating Installations
    KNPD-318
    $5.95 View

    • This is the last step

    See your cart
    • Electric In-Floor Heating for Concrete
    • Easily fits any space with loose cable designed for concrete installation
    • Provides between 12-18W/ft² of heat output depending on cable spacing
    • Factory attached 20 ft. cold lead wire for a flexible connection to thermostat
    • Systems compatible with 120/208/240 supply voltages
    • Complete system includes heating cables, in-floor sensors, and wall-mounted thermostat

    Install ThermoSlab® electric floor heating cable in concrete slabs for energy-efficient radiant floor heating in new construction projects. Designed for in-slab applications, ThermoSlab® electric heating cable delivers powerful heat output and long-lasting heat retention, providing consistent comfort throughout the space.

    Installation Guide

    Warranty

    Who can help me choose the right ThermoTile® electric floor heating mat?
    ThermoSlab® Electric Concrete Floor Heating Cable is designed to add comfortable radiant warmth directly inside a concrete slab or foundation. The rugged heating cable can be installed in concrete or in the sand beneath a slab, creating a permanent electric radiant floor heating system that works with the thermal mass of concrete to store and release heat over time.
    Is ThermoSlab® Electric Concrete Floor Heating Cable safe for homes and businesses?
    Yes. ThermoSlab® Concrete Slab Floor Heating Cables by ThermoSoft are designed as a safe electric concrete floor heating solution for residential and commercial spaces. ThermoSoft floor heating systems are ETL listed and go through thorough development and quality control testing, and. ThermoSlab® Electric Concrete Floor Heating Cables use a shielded heating cable design that emits virtually zero Electro Magnetic Field (EMF).
    What floor types can ThermoSlab® Electric Concrete Floor Heating Cable be used under?
    ThermoSlab® Concrete Electric Floor Heating Cables are installed inside or beneath a concrete slab or concrete foundation, so they can be used with most finished floor covering materials that are approved for installation over concrete. This may include ceramic and porcelain tile, natural stone, laminate, engineered wood, vinyl, carpet, and other floor coverings approved by the flooring manufacturer for use over a heated concrete slab.
    How is ThermoSlab® Electric Concrete Floor Heating Cable installed?
    ThermoSlab® Electric Concrete Floor Heating Cables are installed before the concrete slab is poured. Depending on the project, the heating cable may be secured to metal mesh, rebar, or another approved layout method before the concrete is poured. ThermoSlab® Electric Concrete Floor Heating Cables are electrically wired in parallel to a compatible floor heating thermostat. Always follow the ThermoSoft Installation Manual and have final electrical connections completed by a licensed electrician.
    Will ThermoSlab® Electric Concrete Floor Heating Cable add height to my floor?
    No. ThermoSlab® Electric Concrete Floor Heating Cable is embedded in the concrete slab or installed beneath the slab, so it does not add height to the finished floor assembly.
    How deep does the concrete need to be for ThermoSlab® Electric Concrete Floor Heating Cable?
    ThermoSlab® Electric Concrete Floor Heating Cables can be installed in concrete that is 2 inches or thicker. Always confirm the project details and follow the ThermoSoft Installation manual before installation.
    What if I am not pouring a full 2 inches of new concrete?
    If you are pouring less than 2 inches of new concrete, ThermoSlab® Electric Concrete Floor Heating Cable may not be the right fit for the project. In many thinner floor heating applications, ThermoTile® Electric Floor Heating Mats or ThermoTile® Electric Floor Heating Cable may be a better option. Contact ThermoSoft experts for help choosing the right electrical radiant heating system before ordering.
    Can I use more than one ThermoSlab® Electric Concrete Floor Heating Cable in a room?
    Yes. Many projects use multiple ThermoSlab® Electric Concrete Floor Heating Cables to cover the desired heated area. The cables are laid out together and electrically wired in parallel to the thermostat. They must not be daisy chained or extended in a series electrical connection.
    Can ThermoSlab® Electric Concrete Floor Heating Cable be cut or shortened?
    No. ThermoSlab® Electric Concrete Floor Heating Cable should never be cut, shortened, reshaped, or altered in the field. Choose the correct cable length and layout before installation or contact ThermoSoft US experts for layout assistance.
    Can the cold lead wires of ThermoSlab® Electric Concrete Floor Heating Cable be shortened?
    Yes. The cold lead wires do not produce heat and may be shortened, cut, or extended by a licensed electrician according to the ThermoSlab® Installation Manual and local code requirements.
    What about areas not covered by ThermoSlab® Electric Concrete Floor Heating Cable?
    Not every area of the slab needs to be heated. Finished flooring can be installed as normal over both heated and non-heated areas of the concrete slab. ThermoSoft US experts can help you review the layout for optimal coverage.
    Can ThermoSlab® Electric Concrete Floor Heating Cable really stand up to a concrete pour?
    Yes. ThermoSlab® Electric Concrete Floor Heating Cable is a rugged heating cable designed specifically for new concrete slab applications. We highly recommend using an InstAlarm Monitor during installation. The InstAlarm Monitor connects to the lead wires and sounds an alert if the heating cable is damaged during installation.
    How many Watts per square foot does ThermoSlab® Electric Concrete Floor Heating Cable produce?
    ThermoSlab® Electric Concrete Floor Heating Cable produces approximately 14 Watts per square foot when installed at standard 5-inch (on center) spacing. Actual output may vary if cable spacing is adjusted for the specific project.
    How much does ThermoSlab® Electric Concrete Floor Heating Cable cost to operate?
    Operating cost depends on the heated area, local electric rates, slab insulation, thermostat settings, and usage. Because concrete mass stores and releases heat over time, ThermoSlab® Electric Concrete Floor Heating Cable may be used differently than a surface level floor electric heating system. For a project specific estimate, contact ThermoSoft US experts with the room size, slab details, and planned cable layout.
    How warm does ThermoSlab® Electric Concrete Floor Heating Cable make the floor?
    A properly installed ThermoSlab® Electric Concrete Floor Heating Cable system can typically provide a comfortable floor temperature increase above the room’s ambient temperature. In many applications, the system can provide about 10 to 15 degrees Fahrenheit of temperature difference above ambient room temperature. Actual results depend on the room, slab construction, insulation, thermostat temperature settings, floor covering, and installation conditions.
    How long does ThermoSlab® Electric Concrete Floor Heating Cable last?
    ThermoSlab® Electric Concrete Floor Heating Cables are very reliable; they have no moving parts and do not require regular maintenance once installed correctly and left undisturbed. The heating mats carry a 10-year warranty. Thermostats are covered separately according to the thermostat warranty. Buy with confidence.
    Can ThermoSoft help with my ThermoSlab® Electric Concrete Floor Heating Cable layout?
    ThermoSoft’s US experts can help confirm cable size, layout, voltage, thermostat needs, and installation approach before you order.