When starting to use floor heating, the temperature should slowly rise. Three days before heating, the temperature should gradually rise to 18 degrees Celsius, 25 degrees Celsius, and 30 degrees Celsius, and then rise to normal temperature. The surface temperature should be controlled between 28 degrees Celsius and 30 degrees Celsius. Don't rise too quickly at once, otherwise the SPC floor will crack. If the underfloor heater is not used for a long time and is turned on again, it should be slowly heated according to the above steps, otherwise distortion, deformation, and cracking may occur.