ThermoFloor® Radiant Heating Mats

Electric In-Floor All-In-One Underlayment

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  • Constructed with underlayment pad
  • 8-10 W/ft² output perfect for wood, vinyl, or laminate floors
  • FiberThermics® heating elements with Thermal Cut-Off for increased safety
  • 1/8" total system thickness, equal to blank padding
  • Made in USA & ETL Listed

In-Floor Heating Mats

Combine mats as needed to fit open walkable space, avoiding areas covered by cabinets, vanities or other permanent fixtures. The heating mats cannot be shortened, so avoid over-filling. Each mat will connect to the thermostat, so larger mats will reduce required connections. On a sole thermostat, 120V mats cover up to 200 ft²; 240V mats cover up to 400 ft². DO NOT MIX VOLTAGES.Contact us for project assistance.

TF3002-1203.0' x 2.0'
6 ft²
TF3003-1203.0' x 3.0'
9 ft²
TF3004-1203.0' x 4.0'
12 ft²
TF3005-1203.0' x 5.0'
15 ft²
TF3006-1203.0' x 6.0'
18 ft²
TF3008-1203.0' x 8.0'
24 ft²
TF3010-1203.0' x 10.0'
30 ft²
TF3012-1203.0' x 12.0'
36 ft²
Learn more about NEUP10-0Unheated underlayment is recommended for use under select floor heating systems, above the subfloor. When installing ThermoFloor, additional underlayment is required for unheated areas to achieve an even, level floor.
Underlayment Pad - 3' x 10'

Provides acoustic protection while keeping floors level.

Learn more about NEUP40-0Unheated underlayment is recommended for use under select floor heating systems, above the subfloor. When installing ThermoFloor, additional underlayment is required for unheated areas to achieve an even, level floor.
Underlayment Pad - 3' x 40'

Provides acoustic protection while keeping floors level.

Learn more about FLX-MB100A polyethylene moisture barrier is required for laying above the subfloor, before heating mats are laid, to prevent moisture and damage to the system from the subfloor.
Moisture Barrier

Shields against possible dampness encountered on subfloor.

Learn more about TH-180408X4Fiberboard (MDF) is recommended for use over select electric radiant systems to maintain level floors and protect heating elements.
Fiberboard (4 pcs)

Protects heating wires (4' x 2' x 1/8").


Thermostats & Critical Components

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.

Learn more about UWG4-4999The OJ WiFi enabled touch screen thermostats are the latest, most cutting-edge option in heating controls.
Wi-Fi & Touch
Learn more about UWG5-4999OJ Smart Thermostats integrate with all home assistants and can be controlled easily from an app.
WiFi LED Touch
Learn more about UDG4-4999OJ Touch Screen thermostats have intuitive interfaces for stress-free operation and control of your heating systems in classic white color.
Touch Screen
Learn more about UDG4-4999-N4OJ Touch Screen thermostats have easy and intuitive interfaces for stress-free operation and control of your heating systems in the sleek black color.
Touch Screen - Black
Learn more about TH115-AF-GA/UAube Standard Programable thermostats allow for extensive programmability of 120- or 240-volt heating systems.
Learn more about UDG-4999OJ Advanced Programable thermostats allow for extensive programmability of heating systems and calendar scheduling.
Learn more about AC112-01/UA backup temperature sensor is recommended to be installed with the system in the event of a future sensor failure
Backup Sensor

Avoid future replacement headaches (15'). Include 1 per thermostat.

Learn more about IK-CONA thermostat installation kit makes installation of heating systems easy. Get everything you need in one simple kit and save time and money.
Mounting Kit

2-Gang electrical box, conduit & connectors. Include 1 per thermostat.


Electrical Accessories

Learn more about INSTALRMInstAlarm cable fault finder is recommended to ensure no damage is done to the heating element before, during, and after installation.

Monitor mats for faults during install

Learn more about MULTIMTRA digital multimeter is recommended to measure the heath of mats and cables during installation.

Verify resistance before/after install

Learn more about Fidbox-EMSWhen systems are installed under engineered and solid wood floors, a Fidbox is recommended to monitor humidity levels and to maintain the integrity of wood floors.

In-floor temp & humidity monitor.

Learn more about USG-4000The OJ power module is recommended when multiple mats exceed amp allowances and must be connected to a single thermostat.
OJ Power Module

Doubles the capacity of 1 thermostat

Learn more about FLX-BLOCKA Wago connector is recommended for multiple electrical connections while installing ThermoSoft heating systems.
Lead Splicer (4 pcs)

A better wire nut for multiple leads


Tools & Kits

Learn more about KNPD-318Installation of heating systems may be taxing on the installer’s knees. Avoid aches, pains, and damage to the heating mat with kneepads while protecting the heating element of your system.
Foam Kneepads

Protect the heat wires

Learn more about DT-17860Duct tape is recommended for positioning mats in parallel during installation and keeping them completely flat.
Duct Tape

1-7/8" wide, 60 yards long


How To Install ThermoFloor Heating Mats

This overview does not substitute for a full reading of the Installation Manual.

The below steps will take you from beginning to end simply, but please refer to the full Installation Manual or call us to go over a more detailed installation plan.

Before beginning your installation:

  • Ensure that you have a structurally sound subfloor.
  • If flooring over an existing vinyl, the existing vinyl must be adhered securely to the subfloor and must be clean.
  • Use a 6 mil vapor barrier film if installing on a slab on grade.
1Make sure you have the right amount of material.
Step 1 of Installation of floor heating with ThermoFloor mats is to make sure you have the right amount of material.
  • The mats should cover the entire floor space.
  • Follow heating mats spacing from walls according to the manual.
  • Heating elements should be in areas where you can walk, stand, or want to heat. See your manual for areas to avoid heating.
  • Contact support if you have any questions prior to your installation.
2Prepare conduits and electrical boxes for thermostat installation later.
Step 2 of installation of floor heating with ThermoFloor mats is to prepare conduits and electrical boxes for thermostat installation later.
  • Complete electrical rough-in.
  • This step may be done after cable is laid but is more difficult to do later as location of thermostat may change location of heating system.
3Position and lay out mat, heating element facing up.
Step 3 of installation of floor heating with ThermoFloor mats is to position and lay out mats, heating element facing up.
  • Duct tape ends to each other to remain in place side by side.
  • Stickers should be facing towards the ceiling.
4Add underlayment in unheated area to level the floor.
Step 4 of installation of floor heating with ThermoFloor mats is to add underlayment in unheated areas to level the floor.
  • Underlayment should be laid just like mats and will line up in thickness.
5Position sensors
Step 5 of installation of floor heating with ThermoFloor mats is to position sensors.
  • Highly recommended to install a backup sensor.
  • Position sensor evenly between 2 heating cables.
  • Cut out a notch in the bottom of a flooring plank to house sensor, insuring floor stays level.
6Install floating floor on top.
Step 6 of installation of floor heating with ThermoFloor mats is to install floating floor on top.
  • Consult your flooring manufacturer's instruction manual for details

Note: If you are using a glued down wood floor, consider WarmStep. If you have a specific reason that you are gluing over pad, ThermoFloor is compatible with a glued down wood floor, but in most cases WarmStep is a better option for glued down wood floor.

ThermoFloor Mats Documents

ThermoFloor Mats FAQ

What is ThermoFloor?
ThermoFloor is an all-in-one underlayment and heating system mat, providing sound and impact dampening, moisture abatement, insulation from the subfloor, and gentle radiant heat to the floor covering and room above the heat system. ThermoFloor replaces the need for a standard underlayment pad, but non-heated areas are filled in with plain underlayment padding, which we can provide with your order. ThermoFloor uses patented FiberThermic heating elements to provide the absolute safest radiant heat in your home, and is the best radiant heat system to pair with your floating floors.Shop Now
Is this a safe product to put in my home or business?
Yes. All our floor heating solutions endure rigorous development and quality control testing to ensure that your floor heating system is reliable and safe. Additionally, ThermoFloor uses a heating element made from FiberThermics, which is a non-combustible material that further eliminates the risks from overheating that some associate with electrical heating components.Shop Now
Can I use ThermoFloor with my floor material? What if my project uses an underlayment?
ThermoFloor is compatible with a wide variety of floor materials including wood, laminate, vinyl, and carpet. There are certain considerations that you will want to make in order to ensure that ThermoFloor is a good fit. One important point is that your laminate or vinyl floor should be above 6.5 mm thick in order to prevent telescoping -- which is a process in which the heating elements are “visible” due to a very flexible floor material. Beyond that, most floors approved for floating installation can be installed over ThermoFloor. Give us a call to get a specific consultation today! ThermoFloor is compatible with most any underlayment you would use in an installation, including a pre-attached underlayment like some vinyl floors have.Shop Now
How do I install ThermoFloor? How does it all get connected?
ThermoFloor functions as an all-in-one underlayment pad and heating system, and your chosen flooring material floats directly over ThermoFloor. Be sure to read the Installation Guidelines before beginning an installation and take advantage of our customer support to help clarify any questions you might have. ThermoFloor mats are then wired to a floor heating thermostat in parallel. The number of mats and layout of the room will affect the exact process of how to wire mats together. Please see the Installation Manual for explicit directions or give us a call anytime.Shop Now
Will this add height to my floor?
No, ThermoFloor is designed to replace a standard underlayment padding, and therefore will not add height to a floor in relation to a standard installation with non-heated underlayment.Shop Now
Can I combine more than one ThermoFloor Mat to fit a space?
Most projects involve using more than one mat, but this means that multiple mats are wired in parallel to the thermostat. The thing to remember is that you are not daisy-chaining mats or extending the mats, but rather the mats are working together to cover the appropriate square footage.Shop Now
Can I cut, shorten, or reshape the system?
We do not warranty mats that are cut, shortened, reshaped, or similarly altered in the field. If you think that you will need to do so, we highly encourage you to call us in order to get some assistance with planning your room layout, or otherwise resolve the situation.Shop Now
Can I shorten the lead wires?
The lead wires, also known as cold leads because they do not produce heat, can be cut, shortened, or spliced with additional cold lead cable to lengthen them. Shop Now
What do I do with areas not covered by heating system?
Just fill in those areas with blank (non-heated) underlayment padding! We can provide you with extra underlayment padding that matches the pad used in ThermoFloor to fill in your non-heated areas. Almost every project has a need for filling in some areas with blank padding. Keep in mind, the heating system itself is extremely low profile, so once installed, there will be no height difference between floor material over heated and non-heated areasShop Now
Is the pad used in ThermoFloor any good?
Yes! The underlayment pad that is used in ThermoFloor is one of the best choices you could possibly make for your floating floor. We only use the best components in any of our systems, and the padding used in ThermoFloor is no different, providing superb sound, moisture, and impact control to a floating floor. Click here to see the specifications of the pad itself. We also offer blank padding for your convenience to fill in non-heated areas!Shop Now
How many watts per square foot does ThermoFloor output?
ThermoFloor produces 8-10 watts per square foot of heating.Shop Now
How much will it cost to run this system?
The cost to operate is a complicated question to answer, as electrical rates vary by area, insulation of your home, and even by time of day. Additionally, a cost-to-operate is further complicated because the money spent on your radiant heat can result in a net savings on total utilities cost due to reduced use of your traditional HVAC, which is added to by the fact that you will spend less on HVAC system maintenance by relying on electric radiant heat. So, keeping in mind the nuances of describing the operating costs of an electric radiant heat system, just give us a call so we can discuss your applications operating costs.Shop Now
How hot does ThermoFloor get?
Sometimes, we like to answer a question with a follow-up question. Usually, we are asked about "how hot" a system gets for a couple of reasons, so it is important to understand why you ask? Are you concerned about providing enough heat to adequately warm your space? If so, a properly installed ThermoFloor can provide about 10-15 degrees Fahrenheit of temperature difference above the ambient temperature of the room. In practice, this is more than enough, even in extremely cold climates. We are positive that you will be entirely satisfied with the heat produced by ThermoFloor. Are you concerned about applying too much heat to your chosen floor material? If so, fear not! ThermoFloor is designed to apply heat gently and evenly, due to the nature of the heating elements and the cable spacing pattern that it features. Additionally, because ThermoFloor is designed for flooring materials that might be temperature sensitive, the heat output for ThermoFloor is a reliable 8-10 watts per square foot, which is purposefully lower than what we deliver for tile floors that are not temperature sensitive. You will still enjoy plenty of power to achieve comfortable heat, but it will be a gentle warmup keeping your floors healthy and safe. Lastly, we highly recommend choosing a thermostat that includes a temperature limiter if this is one of your concerns!Shop Now
How long will ThermoFloor last? How long is the warranty?
ThermoFloor requires no regular maintenance once installed correctly and if left undisturbed (remember your radiant system is down there when planning a remodel!). ThermoFloor heating mats are warrantied for 10 years, but after 17 years being on the market, we have yet to see a ThermoFloor Mat fail due to old age. The thermostats that we offer are warrantied for 3 years because we only use thermostats with GFCI protection which, per national electric code, are recommended to be replaced every 3 years. Replacing a thermostat is simple, easy, and inexpensive. Shop Now
I'm still confused.
Then call us, email us, or message us through our website! Our in house customer service experts are happy to assist you!Shop Now

Features of ThermoFloor Mats

  • Made in the USA
  • Available in length increments of 1 foot
  • Factory-attached 20’ lead wires
  • Compatible with most floating floor coverings
  • Low profile eliminates the need for transitions
  • ETL Listed in the U.S. and Canada
  • Floor heating adds comfort and property values
  • Smart when combined with a WiFi thermostat
  • Designed for life
  • Backed by 10 year warranty

Our Commitment to You

ThermoSoft technical support is available with live electric radiant heating experts. They are ready to take your call now! Call (800)308-8057 for more information or help with your in-floor heating, snow melting, bathtub heating, or soil heating project.
Supported by Real People

We know that being the best doesn’t just mean superior products, it means backing them up with superior service.

ThermoSoft electric radiant heat is dedicated to providing exceptional technical support and superior electric radiant heating products to its electric radiant heating client family.
Priority 1: Making You Happy

Creating joy and comfort with our heat applications is our primary motivation.

ThermoSoft has been an industry titan since 1996 and continues to lead the way in the electric radiant heating industry due to its relentless pledge to quality products at a reasonable price.
Industry-Best Value

American-made quality, easy installation, and safe operation. All competitively priced for the best value in radiant heating.

ThermoSoft electric radiant heating products utilize exclusive technology developed by ThermoSoft. FiberThermics are ThermoSoft’s patented safety feature that provides reliability AND magnificent comfort, made in the USA.
Innovative & Reliable Design

Pushing the industry forward with innovation and here for long haul with the greatest reliability. That’s why our systems are in our homes too.

The ThermoSoft electric radiant heat team works diligently to ensure your satisfaction. By understanding your needs, ThermoSoft electric radiant heating can help serve you better.
Understanding Your Needs

ThermoSoft is the best partner for your project because we know when to listen, and when to offer guidance.

By providing safety, reliability, and support, ThermoSoft electric radiant heating is pledging its commitment to you. Backed by industry-leading warranties, ThermoSoft electric radiant heating’s integrity is what sets it apart from the rest.
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Our reputation is one of our best assets. We developed that reputation by delivering on every promise.