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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 included for safety under any floor material
  • 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
Underlayment Pad - 3' x 10'

Provides acoustic protection while keeping floors level.

Underlayment Pad - 3' x 40'

Provides acoustic protection while keeping floors level.

Moisture Barrier

Shields against possible dampness encountered on subfloor.

Fiberboard (5 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.

Wi-Fi & Touch
Touch Screen
Touch Screen - Black
Backup Sensor

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

Mounting Kit

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


Electrical Accessories


Monitor mats for faults during install


Verify resistance before/after install


In-floor temp & humidity monitor.

OJ Power Module

Doubles the capacity of 1 thermostat

Lead Splicer (4 pcs)

A better wire nut for multiple leads


Tools & Kits

Foam Kneepads

Protect the heat wires


1" wide, 10 yards long

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.
  • 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.
  • 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.
  • 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.
  • Underlayment should be laid just like mats and will line up in thickness.
5Position 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.
  • 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

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Supported by Real People

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

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Priority 1: Making You Happy

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

Industry-Best Value

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

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.

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Understanding Your Needs

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

Persistent Integrity

Our reputation is one of our best assets. We developed that reputation by delivering on every promise.