Mysa In-Floor is tested and certified to control up to 3800 Watts at 240V.
| Voltage | Maximum Wattage | Frequency |
| 120V | 1900 W | 60 Hz |
| 240V | 3800 W | 60 Hz |
Exceeding 3800 watts can damage your thermostat, floor, and electrical heating matt. Exceeding the maximum wattage is not covered under warranty.