Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Decent lil heater, for 5 years

This can warm a small to medium size room adequately. I leave it on low setting most of the time, but when you need to heat up fast, this one beats the others for speed. In the morning, it can take my chilly small 8x10 office & make it very comfortable in less than an hour. And since I live at 5000' elevation in the mountains, this is quite impressive. Expect your utility bill to double or triple, when using 2 or 3 of these units to heat your home. Maybe Amazon should sell wood burning stoves next ;) UPDATE 2011 - after several years of heavy use, this heater began smoking and throwing electrical sparks. I think it could have started a house fire. Thanks goodness I was home to see it happening and unplugged it, which is why you should never leave a small portable heater on when you are not home.