Having only used this for less than a hour, I feel compelled to do a review to hopefully help those looking for a descent infrared heater. This is the third one I’ve purchased in a short period of time.The first was a familiar name here on Amazon, Dr. Infrared heater. I had high hopes as it’s probably the one most purchased. Don’t know what all the hype was about, as while sitting around 5-6 feet away, I hardly felt anything. You’d expect something after a hour, but no. The second was a Heat Storm infrared heater. Heat output was about the same as the Dr. Infrared, in other words, about nothing. Those two were returned. This heater, as you’ll note, have some really good reviews and from what I can tell, they’re deserved. In my same testing spot 5-6 feet away, after reading the instructions (and grabbing a couple of AAA batteries - they’re not included), and turning it on, wow I felt actual heat! Imagine that! I finally got what I was looking for in an infrared heater that Dr. Infrared and Heat Storm didn’t deliver. Keep in mind as of now I’ve only used it 1-2 hours, so this isn’t a reliability report. Will it keep putting out heat? Will it later fail to work? I’ve no idea. BUT I did buy the longest extended warranty available here on Amazon. No, I don’t necessarily believe in extended warranties, just playing it safe.Well, that’s my experience and I can’t guarantee yours will be the same. If something crazy happens, I’ll update this review. Currently I’d buy it all over again And I’d certainly recommend it to anyone.Here we are a day later and put a digital thermometer on the foot stool about 5 feet from the heater. Inside temperature was around 68 degrees overnight and this morning, without the infrared heater on. Since I’m in my mid 70’s of age, I get chilled easier than when younger. The temperature on the thermometer is a result of the heater being on around 30 minutes set on High. As mentioned before, this infrared heater works better IMHO to heat ME up and make ME comfortable. Obviously that’s what is important. Take a look: