Heat where you are, not where you aren’t. Instant response when you want it. Save energy by heating only the areas you occupy. Precise heat within 1.5 degree of set temperature (as compared to five degrees with conventional bi-metal thermostats.). 5 day / 2 day programmability (5 weekdays and 2 day weekend, 4 program periods per day). Built-in fan delay operates when unit is turned off after heating to prolong element life.