I have one of these heaters at home and at work. I don't use my personal one anymore because we have electric baseboard heating in our new apartment. At work I have one next to my desk. It does a good job of heating of a small enough space. It is a radiating heater which means the heat radiates out away from the coils. If you are looking for something to heat an entire house; this wont do it. It's more of a one room heater (just a "space" heater). They last a really long time, but can definitely put an extra dent in your electric bill if you keep it on for long periods of time. You can adjust the temperature which is nice. You can also adjust the power, which is a capability some space heaters don't have.