I used this heater in my FROG (finished room over garage) which is a very large room with little insulation, so it gets pretty cold in the winter.  Unfortunately it is the only room I can use as a guest room, but this little heater kept that large room warm and comfy all night!  I love the thermostat and timer features and the fact that I don't have to worry about my kids tipping it over is wonderful.  It is also so pretty that my daughter asked if she could have one for her room - not because her room is cold, but because she thinks it is beautiful.