A:Answer The My energy smart infrared heater is an amazing choice. I've got a duplex and upstairs would always be so hot and downstairs, where my bedroom is, would be like a refrigerator. I purchased this heater and put it outside my door-which i could never keep open, near the stairs leading upstairs. About 68-69* and by the next day, it was an even heat throughout the house and the bill went down, too