Bought this little heater to use in a tiny work room that's not well heated by the central heat. Even after having the system rebalanced, the room was still too cold to work comfortably. Maybe 55° would be alright, but it just wasn't  comfy. We plugged in the little heater, and on low it had the room up to a pleasant 70 degrees pretty quickly. We bought this heater to replace a similar Black & Decker heater that had done the same job for a little over ten years. We hope this one will be just as great.