Ultra-Thin. Low Voltage. 
Unlimited Design Flexibility.

FlexHEAT is a low-voltage electric radiant floor heating system designed to provide efficient, comfortable heat beneath a wide range of finished flooring materials. The system uses ultra-thin aluminum-alloy heating ribbons that can be arranged throughout the room to create broad, even heat coverage while maintaining a very low installation profile.

FlexHEAT ribbons are installed beneath the finished floor in a project-specific layout. When energized, the flat heating elements generate radiant heat that moves upward through the flooring and warms the room from the floor level. Because the system operates at low voltage, a transformer is used to convert the building’s line voltage to the voltage required by the heating system.

Conventional electric floor-heating systems typically use round resistance cables. FlexHEAT uses wide, flat heating ribbons that provide greater contact with the flooring assembly. This broad surface contact helps distribute heat across a wider area and creates a very low-profile installation without the raised lines often associated with round heating cables.

The flat FlexHEAT ribbon offers several advantages:

• Broad and even heat distribution
• Greater contact with the flooring assembly
• Minimal impact on finished floor height
• Flexible placement throughout the room
• Reduced concentration of heat along narrow cable lines
• Fast and efficient heat transfer toward the floor surface

The ribbon format also makes it easier to accommodate rooms with irregular shapes.

Yes. FlexHEAT can be installed beneath tile and stone using an approved installation assembly.

The ribbons must be properly secured and protected before the tile is installed. The complete installation method should follow the TruHeat instructions and the requirements of the mortar, membrane, and flooring manufacturers.

Yes. FlexHEAT can be used beneath compatible laminate and engineered hardwood flooring.

The flooring manufacturer’s maximum temperature limits and radiant-heating requirements must be followed. A floor sensor should be used to prevent the flooring from exceeding the recommended temperature.

FlexHEAT may be installed beneath compatible luxury vinyl flooring when the flooring manufacturer approves it for radiant heat.

Because vinyl flooring may have strict temperature limits, proper thermostat control and a correctly positioned floor sensor are especially important.

Yes. FlexHEAT can be designed for use beneath compatible glued-down flooring.

The adhesive, underlayment, heating system, and finished flooring must all be approved for use together. Installation details should be reviewed before the system is covered.

The FlexHEAT heating ribbon is approximately 0.5 mm thick.

Its ultra-thin profile helps minimize changes to the finished floor height, making it especially suitable for renovations and areas where maintaining transitions between rooms is important.

The heating ribbon itself adds very little thickness to the floor assembly.

The total floor buildup will depend mainly on the selected underlayment, adhesive, membrane, levelling compound, or other installation materials required for the finished flooring.

Yes. FlexHEAT is particularly well suited for irregular room layouts.

The heating ribbons can be positioned around walls, angled areas, permanent fixtures, and other obstacles while maintaining the required spacing and electrical design.

The required coverage depends on the room’s heat loss and the purpose of the system.

FlexHEAT can often be designed to cover approximately 50% to 70% of the available floor area. Higher coverage may be recommended for primary heating or spaces with greater heat loss.

The final coverage must be confirmed through a project-specific design.

The heating ribbons should generally not be installed beneath permanently fixed cabinets, kitchen islands, built-in vanities, walls, or other fixtures that prevent heat from escaping.

These areas should be identified before the heating layout is prepared.

Furniture can generally be placed over a heated floor when there is adequate airflow beneath it.

Large furniture with a solid base, thick rugs, rubber-backed mats, and other insulating objects may trap heat and should be avoided unless the system, flooring, and furniture manufacturers permit it.

No. Each FlexHEAT kit includes heat tape manufactured to a specific length. Cutting or shortening the heat tape will make it unusable and void the product warranty.

FlexHEAT ribbons may be available in several widths, typically ranging from approximately 5 cm to 12 cm.

The selected width depends on the room layout, heating output, ribbon spacing, available floor coverage, and electrical design.

Yes. FlexHEAT is a low-voltage heating system and requires an approved transformer or power supply.

The transformer converts the building’s line voltage to the low voltage required by the heating ribbons. It must be correctly sized for the connected heating load.

The transformer is typically installed in an accessible, ventilated location such as a utility room, mechanical room, electrical area, closet, or other approved space.

The exact location must comply with electrical codes, clearance requirements, ventilation needs, wiring distances, and the transformer manufacturer’s instructions.

Transformers may produce a slight operational hum, depending on their size, construction, mounting method, and electrical load.

For this reason, the transformer should be installed in a suitable location and securely mounted according to the manufacturer’s requirements.

In some projects, one transformer may power more than one heating area.

Whether this is practical depends on the total connected load, wiring distances, voltage drop, control strategy, and whether the rooms need to operate independently.

Separate transformers or control zones may be recommended for greater flexibility.

Yes. The system can be divided into separate heating zones.

Zoning allows different rooms or areas to operate at their own temperatures and schedules. It can also allow unused areas to remain off, helping improve comfort and energy management.

FlexHEAT can be paired with a compatible radiant-floor-heating thermostat and control system.

Depending on the electrical design, the thermostat may control the transformer directly or operate through relays, contactors, or other approved control components.

Programmable and Wi-Fi-enabled options may be available.

A floor sensor is strongly recommended and may be required depending on the flooring material and control design.

The sensor monitors the floor temperature and helps prevent the surface from exceeding the limit recommended by the flooring manufacturer.

The floor sensor should be installed between adjacent heating ribbons in a representative heated area.

It should not touch or sit directly on top of a heating element, as this may cause an inaccurate temperature reading. Installing the sensor inside a conduit is recommended where possible so it can be replaced later.

FlexHEAT is designed to transfer heat efficiently through its wide, thin heating ribbons.

Actual warm-up time depends on the finished flooring, installation method, subfloor, insulation, starting temperature, room heat loss, and thermostat settings.

A thin flooring assembly will generally respond faster than a system embedded beneath a thick concrete layer.

FlexHEAT is designed to provide broad heat coverage and transfer heat efficiently toward the finished floor.

Radiant heating can improve comfort at lower room-air temperatures because warmth is delivered directly from the floor and distributed throughout the occupied space.

Actual energy consumption depends on the building’s heat loss, insulation, floor coverage, thermostat settings, climate, and operating schedule.

FlexHEAT primarily heats through radiant heat.

The warm floor transfers heat to people and surrounding surfaces while also gradually warming the room air. This creates a comfortable, even temperature without relying on strong air movement.

No. FlexHEAT does not use fans or forced-air ducts to distribute heat.

Because it operates through radiant heat, it does not create the same air movement associated with forced-air heating systems. This may help reduce the circulation of dust and airborne particles within the room.

Yes. Insulation is strongly recommended wherever practical.

Proper insulation reduces downward heat loss, directs more energy toward the finished floor, improves warm-up time, and can lower operating costs.

Insulation is especially important over concrete slabs, basements, crawlspaces, garages, and other unheated areas.

Yes. FlexHEAT can be installed over a properly prepared concrete subfloor.

The concrete must be clean, dry, level, and structurally sound. Insulation or a thermal-break layer is strongly recommended to reduce heat loss into the slab.

Yes. FlexHEAT can be installed over suitable plywood, oriented strand board, or other approved wood subfloors.

The subfloor must be stable, clean, level, and prepared for the selected flooring and installation method.

Yes. FlexHEAT can be installed in bathrooms when the system and flooring assembly are installed in accordance with TruHeat instructions and applicable electrical and building codes.

Waterproofing requirements must be coordinated with the heating layout.

Installation inside a shower enclosure depends on the system configuration, waterproofing assembly, product approvals, and local electrical requirements.

TruHeat should review the project before FlexHEAT is installed within a shower area.

Yes. FlexHEAT is well suited for basement heating.

Because concrete slabs can absorb significant amounts of heat, proper insulation or a thermal break beneath the heating system is especially important for basement applications.

Yes. The ultra-thin ribbon makes FlexHEAT an excellent option for renovation projects where additional floor height must be minimized.

The flexible layout can also help accommodate existing room dimensions, fixed fixtures, and irregular spaces.

Yes. FlexHEAT can be designed for multiple rooms or whole-home heating when the system is properly sized to meet the building’s heat loss.

Each room can be divided into its own heating zone for individual temperature control.

The heating ribbons contain no moving parts and generally require minimal maintenance once installed.

The thermostat, transformer, relays, sensors, electrical connections, and protective devices should be inspected if a fault occurs or as recommended by the equipment manufacturers.

Electrical testing should be completed before installation, during installation, and after the finished flooring has been installed.

Testing may include:

• Heating-ribbon resistance measurements
• Insulation-resistance testing
• Continuity testing
• Verification of low-voltage output
• Floor-sensor testing
• Transformer and control testing
• Zone-by-zone commissioning

All test results should be recorded and retained with the project documentation.

Installation should stop immediately if a heating ribbon, connection, lead wire, or insulating component is damaged.

The affected section should not be covered or energized. Contact TruHeat to determine whether an approved repair can be completed or whether the section must be replaced.

The heating system should be installed by qualified contractors working from the approved TruHeat layout and installation instructions.

All permanent wiring, transformers, controls, electrical connections, and commissioning must be completed by qualified electrical professionals in accordance with applicable codes.

Yes. TruHeat can review floor plans and provide:

• Heating-ribbon layouts
• Recommended floor coverage
• Ribbon width and spacing
• Heating-load recommendations
• Transformer sizing
• Electrical requirements
• Heating-zone design
• Control guidance
• Installation details

The system should be designed before the finished flooring materials are installed.

TruHeat may require:

• Floor plans and room dimensions
• Project location
• Finished flooring type
• Subfloor construction
• Insulation details
• Available floor area
• Locations of cabinets and permanent fixtures
• Available electrical service
• Whether the system will provide primary or supplemental heat
• Heat-loss information
• Desired heating zones and controls

Complete project information helps ensure the system is properly designed.

The FlexHEAT system is covered by a 15-year limited warranty when it is installed, tested, and documented in accordance with TruHeat’s installation requirements.

Refer to the official FlexHEAT warranty documentation for complete terms, conditions, and exclusions.

Send TruHeat the floor plans, room dimensions, finished flooring type, subfloor details, available voltage, insulation information, and intended heating requirements.

The TruHeat team can then recommend the appropriate ribbon layout, floor coverage, transformer size, electrical configuration, heating zones, and controls.