Quick Comparison
| Product | Best For | Rating |
|---|---|---|
| WarmlyYours TempZone | Best Overall | 4.7/5 |
| LuxHeat Mat Kit | Best Budget | 4.6/5 |
| SunTouch TapeMat | Best Premium | 4.7/5 |
| Schluter DITRA HEAT | Best for Bathrooms | 4.5/5 |
| HeatTech 30 sqft Mat | Best Compact | 4.6/5 |
I have remodeled three bathrooms in the last five years and under tile heating has become non negotiable in cold climates. I compared five popular systems across two real bathroom installs and one entry foyer.
What Matters Most
I judged each system on warm-up time from cold, install ease for a DIY remodeler, thermostat quality and features, watts per square foot for actual heat, and the warranty backing the product.
My Setup
A 50 square foot master bath, a 30 square foot powder room, and a 25 square foot entry. Same porcelain tile thickness, same thinset, same subfloor on each install.
The Under Tile Heating Systems I Tested
The SunTouch WarmWire In-Floor Heating was my top pick because the WarmWire system lets you snake heat anywhere and the SunStat thermostat is the best in the category.
The Schluter Ditra Heat Mat System is the most install friendly. The studded membrane locks the cable in place without zip ties or hot glue.
The WarmlyYours TempZone Floor Heating is the most powerful. 15 watts per square foot warms a chilly tile floor fast even over a cold concrete slab.
The HeatTech 30 sqft Heating Mat is the best value. Pre-spaced cable on a mesh mat made the powder room install quick.
The LuxHeat Electric Floor Heating System comes with the best thermostat in the budget tier. Programmable schedules and a clear touchscreen.
Common Mistakes
The biggest mistake is forgetting to test the resistance of the cable before and during install. A nick from a trowel kills the whole mat and you will not know until tile is set. Test with a multimeter at three checkpoints. Second mistake is skipping the floor sensor. Without it the thermostat guesses based on air temperature and the floor never warms up right.
Final Recommendation
For most bathroom projects the Schluter Ditra Heat Mat System is the install I would pick because it doubles as a decoupling membrane. For maximum heat in a cold climate the SunTouch WarmWire with the SunStat thermostat is unbeatable.
Frequently asked questions
Do under tile heating systems work under any tile?+
They work under porcelain, ceramic, and natural stone. I would not put them under vinyl plank because the heat can soften the adhesive over time.
Do I need an electrician to install one?+
Yes for the final hookup to your panel. The mat installation itself is DIY friendly but the electrical connection should be done by a licensed pro to keep your warranty valid.