SunTouch WarmWire Radiant Floor Heating Cable for Interior Applications, 120/240 V

Product Features: 

• Versatile Installation Options: Install the WarmWire electric floor heating cable directly over plywood, OSB, cement board, or concrete slabs using CableStrap, or pair it with the SunTouch HeatMatrix Anti-Fracture Uncoupling Membrane for enhanced uncoupling performance, vapor management, and secure cable retention in tile and stone floor applications.
• Precision Cable Placement: HeatMatrix features precision-engineered preformed channels with an integrated click-in system to hold heating cables firmly in place, maintaining consistent spacing for uniform heat distribution and optimized radiant heating system performance.
• Customizable Heat Output: Adjustable cable spacing at 2.5”, 3”, or 3.5” intervals allows you to tailor watt density for specific areas, using closer spacing in high heat loss zones such as basements and sunrooms and wider spacing in low heat loss areas for balanced, energy-efficient floor heating.
• Durable Constant-Diameter Heating Wire: Oxygen-free copper conductors, high-temperature thermoplastic insulation, and a protective metal grounding jacket deliver long-term durability and efficient heat transfer beneath tile, porcelain, natural stone, marble, granite, and approved resilient floor coverings.
• Dual-Voltage Compatibility: Supports both 120V and 240V electric radiant floor heating systems, making it ideal for bathrooms, kitchens, bedrooms, living rooms, basements, hallways, retail spaces, and both new construction and remodeling projects.
• Energy-Efficient Thermostat Control: Compatible with SunStat floor-sensing thermostats (sold separately), including non-programmable and Wi-Fi programmable models, for precise temperature regulation, accurate floor sensing, and energy savings.
• Safe, Low EMF Operation: Dual-wire technology reduces electromagnetic fields (EMF) to ultra-low levels, while UL-listing and CSA-certification ensure safety, code compliance, and dependable indoor installation.
• Shower Approved Installation: Suitable for shower floor applications where permitted by local electrical code, offering added versatility for wet area radiant floor heating installations.
• Simplified Wiring Design: Factory-connected single-point power connection streamlines layout and wiring, making installation easier for professional contractors and DIY installers.
• Comfortable, Even Floor Heating: Designed to warm tile and stone floors with even heat distribution, helping reduce cold spots while delivering comfortable warmth beneath finished flooring and transforming any living space into a warm, cozy, and inviting retreat.
  

Product Description: 

Never wake up to cold floors again. Popularly used in large rooms and spaces with complex layouts, WarmWire Series cables deliver comfortable heating temperatures to keep your feet warm and toasty as part of a high-performance radiant heating system. WarmWire Radiant Floor Heating Wire is a reliable and affordable way to add comfort and warmth to your home. Constructed with oxygen-free copper heating elements for flexibility, durability, and long-term performance, the wire integrates seamlessly beneath tile and stone to provide consistent radiant warmth, warms tile, and supports efficient heat transfer for even heat distribution, helping reduce cold spots while enhancing overall comfort. The cable is designed with high-temperature thermoplastic insulation, making it resistant to corrosion, chemicals, and temperature extremes, while a metal grounding jacket provides added safety should any electrical elements become exposed, extending the service life and overall longevity of your electric radiant floor heating system and delivering comfortable warmth beneath finished flooring.

SunTouch WarmWire Radiant Floor Heating Cable offers an improved energy-efficient underfloor heating solution designed for a wide range of interior residential and light commercial applications for indoor installation. This easy-to-install constant-diameter electric heating cable system is ideal for bathrooms, bedrooms, kitchens, entryways, laundry rooms, mudrooms, sunrooms, basements, hallways, offices, retail spaces, and other indoor living or working areas. Ideal finished flooring types include ceramic tile, porcelain tile, marble tile, cement tile, natural stone tile, granite tile, mosaic tile, slate tile, limestone tile, quartzite tile, onyx tile, travertine tile, glass tile, and engineered stone tile, making it well suited for tile floor applications such as bathroom tile, kitchen tile, and basement tile installations, as well as professional stone floor installations.

WarmWire may also be installed beneath approved resilient floor coverings, including LVT, vinyl tile, luxury vinyl plank, laminate flooring, engineered wood, hardwood, stone plastic composite (SPC), and alternate floor coverings, provided the finished flooring is rated for radiant heating and installed within the flooring manufacturer’s specified temperature limits to ensure proper performance of the finished floor. 

SunTouch WarmWire is UL-listed and CSA-certified, ensuring safety, quality, and consistent performance backed by Watts Water Technologies’ reputation for innovation in radiant heating solutions. Approved for shower applications where permitted by local code, WarmWire provides added versatility in wet areas when installed according to manufacturer guidelines.

Features a factory-connected single-point power connection and dual-wire technology designed to reduce electromagnetic fields (EMF) to ultra-low levels, simplifying layout and wiring while prioritizing safety and peace of mind for professional installers and DIY enthusiasts alike to help maximize system performance. Built to meet recognized safety and quality standards, SunTouch Warm Wire offers quiet, maintenance-free operation and dependable radiant performance, making it a trusted solution for long-term comfort and efficiency in interior living spaces.

Designed for versatility and ease of use, it can be installed using the SunTouch HeatMatrix Anti-Fracture Uncoupling Membrane, which features precision-engineered preformed channels designed to securely hold heating cables in place while embedded in a thin-set mortar layer. The integrated click-in system helps keep cables firmly positioned during installation and long-term use, maintaining consistent spacing for uniform heat distribution. HeatMatrix provides anti-fracture protection, vapor management, and uncoupling performance to help minimize stress from substrate movement and protect the tile assembly. Alternatively, the cable could be installed using WarmWire installation straps, where it is secured to the subfloor and then covered with mortar adhesive, self-leveling underlayment, or polymer-modified thin-set mortar adhesive. It is compatible with approved substrates, including concrete slabs, plywood or OSB subfloors, and cementitious backer board (fiber cement or cement board), when installed according to manufacturer guidelines, and is suitable for installation over wood-framed floors with plywood or OSB subfloors where cement backer board and tile are installed above the subfloor. With dual-voltage options available in 120V and 240V, it accommodates various room sizes and heating requirements, delivering uniform warmth across the entire floor surface for both new construction and remodeling projects.

WarmWire can be controlled with SunStat floor-sensing thermostats (sold separately). It can be controlled with non-programmable models, the 500950-SB CommandPlus Wi-Fi programmable thermostat, and the 500900-SB ConnectPlus Wi-Fi programmable thermostat. Both WiFi models allow remote monitoring and adjustment through a mobile app, providing accurate floor temperature monitoring, precise temperature regulation, and consistent warmth. 

WarmWire features a durable outer jacket, corrosion-resistant copper conductors, a factory-connected cold lead, and adjustable cable spacing at 2.5”, 3”, or 3.5” intervals, allowing you to customize the wattage per square foot based on the desired comfort level. For high heat loss areas such as sunrooms or basements, cable spacing can alternate between 2.5 and 3 inches for increased output, while lower heat loss areas like hallways can alternate between 3 and 3.5 inches to reduce watt density. This flexibility makes WarmWire ideal for custom room layouts, odd-shaped areas, and renovation projects.

Whether you’re remodeling a master bathroom, bedroom, living room or adding warmth to a tiled kitchen floor, SunTouch WarmWire provides long-lasting comfort, energy savings, and a luxurious radiant heating experience. Designed and assembled in the USA, it is backed by a 25-year limited warranty when installed according to manufacturer instructions. Choose SunTouch WarmWire as a trusted choice for dependable, professional-grade electric underfloor heating that transforms cold floors and any living space into a warm, cozy, and inviting retreat.

The underfloor heating system is a highly efficient and eco-friendly way to warm your floors and can be used as a primary or secondary heat source. This system uses electric radiant floor heating cables/ wires with uncoupling waterproofing tile underlayment membrane/ sheets/ floor mats.