I needed a little heater that I could put in my front room to help with heating cost of my home. 
This heater works so well that I turned off the heat in this room. It takes about 10 min to heat my 600 sq foot room. That's pretty quick.
I can set the temperature on the unit and how long I want it to run. Love this feature.  It even has a automatic shut off just in case I forget.
Just in case your wondering it didn't make my electric bill go up at all. Gas bill down electric stayed the same. So cost effective,  I love it.