Best Under Tile Floor Heater Systems for Tile and Laminate

Electric under tile floor heaters provide even warmth and can be installed under tile and laminate for comfortable underfoot temperatures. Below is a quick comparison of the selected kits included in this guide.

Product	Area Coverage	Voltage / Thermostat
LuxHeat 20sqft Mat Kit	20 Sqft	120V / Programmable w/ GFCI
LuxHeat 30sqft Mat Kit	30 Sqft	120V / Programmable w/ GFCI
LuxHeat 50sqft Cable Kit	50 Sqft	120V / Programmable w/ GFCI
LuxHeat 80sqft Mat Kit (Wi‑Fi)	80 Sqft	120V / Wi‑Fi Programmable w/ GFCI
Warming Systems 15sqft Mat	15 Sqft	120V / Programmable Thermostat

LuxHeat 20sqft Floor Heating Mat Kit

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This 20 sqft self-adhesive heating mat kit is designed for installation under tile and laminate. The kit includes a programmable UDG thermostat with integrated GFCI, a floor sensor, and a cable monitor/alarm for installation protection. The mat is pre-spaced (3″ spacing), can be cut and turned (do not cut the heating wire), and has adhesive mesh to adhere to subfloors. The manufacturer specifies embedding the heating wires in a self-leveling underlayment, thinset or mortar. The product carries a multi-decade warranty backing and is targeted at single-room installations where a compact coverage area is required.

LuxHeat 30sqft Floor Heating Mat Kit

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The 30 sqft mat kit expands coverage while retaining the same core components: a UDG programmable thermostat with built-in GFCI, floor sensor, and installation alarm. The mat’s 1/8″ thickness and pre-spaced cable allow low-profile installation beneath tile or laminate. This kit is suited for larger bathrooms, small kitchens, or zoned sections of open spaces. Installation requirements include embedding the heating element in thinset or a self-leveler and adhering the mat to the subfloor using the provided adhesive mesh. The kit emphasizes installation flexibility (flip/rotate) while cautioning not to shorten the heater wire.

LuxHeat 50sqft Floor Heating Cable Kit

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This kit uses a loose-lay heating cable to offer custom layout flexibility for irregular spaces. It includes a programmable touchscreen thermostat (UDG4-4999) with GFCI, floor sensor, cable strapping/guides, and an installation alarm. The cable system requires the wire to be fully embedded in thinset or a self-leveling compound and prohibits cutting the heater wire. The loose cable format is beneficial when exact mat sizes won’t fit or when the installer prefers tailored runs around fixtures, islands, or non-rectangular areas. The kit targets whole-room coverage up to 50 sqft with room-level thermostat control.

LuxHeat 80sqft Floor Heating Mat Kit Wi‑Fi

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The 80 sqft Wi‑Fi mat kit includes a UWG4 thermostat with Wi‑Fi connectivity, built-in GFCI protection, floor sensor, cable monitor/alarm, and an 80 sqft self-adhesive mat. The Wi‑Fi thermostat supports remote monitoring and control from Android/iOS devices, enabling scheduling and energy tracking. The mat installs like other self-adhesive products and requires embedding in thinset or self-leveler. The larger coverage and remote control features make this kit appropriate for open-plan areas or homeowners seeking networked thermostat control across larger heated floor footprints.

Warming Systems 15sqft Electric Floor Mat

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The Warming Systems kit provides a 15 sqft, 20″ wide x 9′ long electric floor warming mat with a digital programmable thermostat (TH115-AF-120S), floor sensor, and an installation monitor alarm. Rated at 12 Watts/sqft, the mat is UL listed, 1/8″ thick, and safe for wet areas, making it suitable for bathrooms. The mat can be flipped, turned, and adhered to various subfloors using double-sided tape. The thermostat supports 7‑day programming and is rated at 120V/16A, with installer-focused features like the alarm that sounds if the wire is damaged during installation.

Buying Guide: How To Choose An Under Tile Floor Heater

Selecting the right under tile heater requires considering installation type, power/voltage, control options, and site-specific constraints. Below are the primary factors to evaluate in an objective, comparative way.

1. Mat vs. Loose Cable (Layout Flexibility)

• Pre‑spaced Mats (LuxHeat 20/30/80, Warming Systems): Easier and faster to install for rectangular or regular-shaped areas. Mats adhere to the subfloor and are flipped/turned to fit layouts.
• Loose Cable (LuxHeat 50 cable kit): Allows custom runs around islands, fixtures, or odd-shaped rooms. Requires careful spacing and securing with strapping or mesh.

2. Voltage And Wattage

• 120V Kits are common for single-room applications and retrofit projects; many thermostats included are rated for typical household circuits.
• 240V Options (not in the five picks here) support higher wattage for large areas but typically require dedicated circuits and professional wiring.
• Check Watts Per Square Foot — common values are 10–20 W/sqft. Higher wattage provides quicker heat-up and higher achievable surface temperatures.

3. Thermostat Features And Safety

• Programmable Thermostats let you schedule heating to match occupancy and reduce runtime.
• GFCI Protection (integrated in many LuxHeat thermostats) is essential for wet areas like bathrooms.
• Wi‑Fi Thermostats (LuxHeat 80 kit) enable remote control and energy logging for performance monitoring.
• Installation monitors/alarms are useful for detecting cable damage during installation.

4. Installation Requirements

• All selected products require heating elements to be embedded in thinset or self-leveling underlayment. Follow manufacturer instructions for mortar/thinset coverage depth.
• Do not cut or shorten heating wires — mats and cable elements must remain intact to function safely.
• Subfloor preparation matters: clean, dry, and level substrates improve adhesion and long-term performance.
• Some kits include uncoupling membranes (in other LuxHeat SKUs) which add waterproofing and crack isolation; choose if substrate movement or waterproofing is a concern.

5. Area Coverage And Room Use

• Match kit square footage to the heated area. Leave room for cabinets, fixed fixtures, or areas not intended for heating.
• For smaller bathrooms, 15–30 sqft mats are typical. For larger bathrooms or open-plan areas, 50–80 sqft or loose cable layouts are more suitable.
• Consider whether you need full-room coverage or spot-warming (e.g., in front of vanities).

6. Energy Use And Performance

• Electric radiant floors convert electrical energy directly into heat at the surface. Runtime and temperature settings determine energy consumption.
• Programmable schedules and thermostats with accurate floor sensors result in more efficient operation versus simple on/off control.
• Higher insulation beneath the heating system reduces heat loss downward and improves efficiency.

7. Warranty, Support, And Certification

• Check manufacturer warranties (several LuxHeat kits note long-term warranty coverage). Warranties vary by component (mats, thermostats, cable).
• UL or cULus listings and local electrical codes: choose kits with recognized safety listings appropriate for your country/region.
• Installer support and documentation are important; installation monitors and alarms help avoid damage during tiling.

8. Professional Installation Vs. DIY

• Qualified electricians should handle final thermostat wiring and any required dedicated circuits. Local code may mandate licensed professionals for some electrical work.
• Skilled DIYers can install mats or cable when following manufacturer instructions, especially for small bathrooms. Use cable monitors and test circuits before covering with thinset.

Comparison Perspectives

• Ease of Installation: Mats (Warming Systems, LuxHeat mats) are faster for regular shapes; cable kits require more layout planning.
• Flexibility: Cable kits fit odd shapes; large mats (80 sqft) reduce seams and installation time on big floors.
• Control Features: Wi‑Fi thermostat adds remote scheduling and monitoring; standard programmable thermostats still provide timed control and safety via GFCI.
• Wet Area Use: Confirm GFCI integrated thermostats and UL wet-area listings when installing in bathrooms or wet locations.

Use the above criteria to match the right system to your room size, wiring capability, and desired control features. Follow manufacturer installation steps and local electrical codes for safe and reliable operation.