I have a 1940 home with a finished attic that has very inconsistent temperatures through the winter, even though it is fully insulated. We do have a ductless heat pump head in that room, but do not like the heat it puts off, it's way too dry. After using various space heaters, I installed the 1000 watt version which took me about 10 minutes, then plugged it in and the following nights have VOILA! had a stable temp of around 68° with the setting dial on the 2-3 notch marker. Overall, after living in this house over 20 years, we are now having the most stable day and nighttime temperatures we've ever had. It's usually around 68 or 69° and not noticeable, which is the point. While the heater has no fan, it does make a click noise when the thermostat turns on and off, and it also makes a metal kind of bending thump sound, which I assume is the structure inside cooling and heating. They are very minimal and do not wake either of us up, but it's noticeable when we're just hanging around.