SunTouch WarmWire offers a reliable, energy-efficient way to bring radiant warmth to your home. Whether you’re planning a bathroom renovation or updating your kitchen floors, this electric floor heating cable system delivers consistent comfort while being simple to install. In this guide, you’ll find everything you need to know to make an informed decision—from how it works to where it’s best used, and tips for getting the most out of your system.
What Is SunTouch WarmWire?
SunTouch WarmWire is an electric floor heating cable designed to be embedded in mortar under various floor coverings. It provides radiant heat from the ground up, offering a more efficient and pleasant heating experience than forced-air systems. WarmWire is especially popular in spaces like bathrooms, kitchens, and entryways where tile or stone floors can otherwise feel cold.
How SunTouch WarmWire Works
The system consists of a durable cable that emits radiant heat when electric current passes through it. It’s installed directly beneath the flooring material and connected to a programmable thermostat. The cable spacing can be adjusted depending on how much heat is desired, offering flexibility in different room sizes and layouts.
Key Features of SunTouch WarmWire
- Durable Construction: Made with a tough fluoropolymer insulation and metal grounding sheath, WarmWire is built for long-term reliability.
- Flexible Spacing Options: Adjustable spacing allows users to customize the heat output to their preferences and room size.
- Compatibility: Works with a wide range of flooring types including tile, stone, and even some laminates.
- UL Listed: Meets rigorous safety standards for residential use in North America.
Benefits of Installing SunTouch WarmWire
Radiant floor heating offers a unique comfort that traditional systems often can’t match. With SunTouch WarmWire, the benefits include:
- Even heat distribution without blowing dust or allergens
- Reduced reliance on central heating systems
- Quiet operation with no moving parts
- Increased comfort in commonly used spaces
Best Applications for SunTouch WarmWire
This system shines in rooms where people often walk barefoot. Common areas include:
- Bathrooms: Keeps tile floors warm and inviting
- Kitchens: Ideal for areas where you spend a lot of time standing
- Mudrooms & Entryways: Helps dry wet shoes and prevent cold drafts
- Basements: A smart solution for combating cool, damp concrete floors
Compatible Floor Types
SunTouch WarmWire works best with floor coverings that conduct heat effectively. Recommended types include:
- Ceramic and porcelain tile
- Natural stone
- Engineered wood with appropriate underlayment
- Certain vinyl and laminate floors approved for radiant heating
Always check the manufacturer’s flooring guidelines to ensure compatibility with electric heating systems.
Installation Basics
While professional installation is often recommended, experienced DIYers can install the system by following the guidelines closely.
- Surface Prep: The subfloor must be clean, dry, and free of debris.
- Laying the Cable: WarmWire is secured using CableStrap or a metal lath system, with spacing set according to heat needs.
- Embedding the Wire: The cable is embedded in thin-set mortar or self-leveling compound.
- Thermostat Connection: Wires are connected to a thermostat that controls the heat output and scheduling.
Tools and Materials Needed
- WarmWire cable and accessories
- CableStrap or metal lath
- Digital multimeter
- Programmable thermostat
- Thin-set mortar or self-leveling compound
- Subfloor primer (if needed)
- Floor sensor (included with thermostat)
Thermostat Integration
Pairing the system with a SunStat thermostat gives users full control over temperature and scheduling. Many models also offer Wi-Fi connectivity, so you can adjust your settings remotely via smartphone.
Energy Efficiency Tips
To get the most from your SunTouch WarmWire system:
- Use a programmable thermostat to avoid unnecessary heating
- Insulate your subfloor if possible to reduce heat loss
- Set reasonable temperature schedules for different times of day
- Close doors to retain heat in the warmed space
Safety and Compliance
SunTouch WarmWire is UL-listed for safety and includes built-in protection against electrical faults. It’s suitable for wet locations like bathrooms when installed with a ground fault circuit interrupter (GFCI).
Maintenance and Longevity
Once installed, WarmWire systems require minimal maintenance. The cables are enclosed beneath the floor and are protected from wear and tear. Most issues arise from improper installation, so following guidelines is key.
Common Installation Mistakes to Avoid
- Overlapping wires, which can lead to overheating
- Cutting or damaging the cable during installation
- Not testing the system before laying the floor
- Ignoring the floor manufacturer’s recommendations
Troubleshooting Basics
If the system doesn’t turn on or heat properly:
- Check thermostat connections and settings
- Use a multimeter to test cable continuity
- Confirm floor sensor is correctly installed and placed
- Inspect for tripped breakers or GFCI faults
Retrofitting vs. New Construction
WarmWire can be installed in both renovation and new-build projects. It’s ideal for remodeling because it adds very little height to the floor and integrates well with existing electrical systems.
Environmental Impact
Electric radiant heating is more energy-efficient than many conventional systems, especially when localized to key areas. By heating only the floors you need, energy waste is minimized. Plus, SunTouch products are made with sustainability in mind, using lead-free materials and recyclable packaging.
Comparison with Other Heating Methods
- Baseboard Heaters: Less efficient, slower to heat
- Forced-Air Systems: Spread allergens and dust
- Hydronic Radiant Heating: More complex, higher upfront cost
- SunTouch WarmWire: Simple, targeted, and user-friendly
Seasonal Use and Optimization
While some homeowners run their floor heating year-round, others use it seasonally. Autumn and winter are the most common periods for daily use. Programming your system for early morning warmth and late evening comfort ensures the floors are warm when you need them most.
Professional vs. DIY Installation
DIY installation is possible with care, but working with a certified electrician or flooring professional can ensure the job is done right. If you’re unsure about wiring or cable placement, it’s best to consult an expert.
Main Key Takeaways
- SunTouch WarmWire delivers consistent, efficient radiant heating ideal for tile and stone floors.
- It’s flexible in application, reliable in performance, and simple to control with a programmable thermostat.
- Proper installation is key to maximizing comfort and efficiency.
- Ideal for bathrooms, kitchens, and other high-traffic areas.
- Low maintenance with long-term durability makes it a smart upgrade for any home.
FAQs
Is SunTouch WarmWire safe for bathrooms?
Yes, when installed correctly with GFCI protection, it is safe and effective in wet environments.
Can I install WarmWire under hardwood?
Only if the specific hardwood is rated for radiant heating. Engineered wood is typically more compatible than solid hardwood.
How long does installation take?
Depending on room size and installer experience, it can take anywhere from a few hours to a full day.
Does it work with smart thermostats?
Yes, many SunStat thermostats offer Wi-Fi connectivity and smart home integration.
What happens if a cable is damaged?
Cables should not be cut or altered. If damaged during installation, they will need professional repair before covering.






