I keep this to heat my bedroom. My windows are not properly insulated. I have had this unit for a week and use it every night. It runs slightly loud when im trying to sleep but it's no different from an air conditioning unit in the summer time. It has a slight burning smell when you first run it but it goes away within minutes. Overall, I'm very happy for buying this unit. For the price, it does a great job keeping my room warm all night while I sleep.
BOUGHT 2 OF THESE HEATERS. THEY WORKED GREAT FOR ABOUT 2 MONTHS, THEN, BOTH STOPPED WORKING FOR NO APPARENT REASON.
This is the second one of this model that I bought. The first was whisper quiet. this one is a bit noisier. Otherwise OK to begin with.
Nice to heat small area.