If I use SunTouch mats under a ceramic floor without a thermostat control, is there danger of fire?
SunTouch mats are Listed by Underwriters Laboratory and the focus of U.L. testing is fire and shock prevention. Of course, you must install your system according to SunTouch installation instructions as well as all local building and electrical codes. If you operate your system without a thermostat, your floor could become uncomfortably warm and your operating costs could be higher than necessary, but it would not have a risk of fire if otherwise installed correctly. Your best option is a SunTouch Programmable SunStat PRO. This solid state control has several safety features built-in; floor sensor and air temperature sensors, clock and timer functions, GFCI for safety and a relay that allows control of up to 150 square feet of 120vac mat or 300 square feet of 240vac mat.
