VEVOR Portable Electric Space Heater with Thermostat, 1000W/1500W 2-Level Adjustable Quiet Ceramic Heater Fan, 9 in Tip-Over Shutdown Flame-Retardant PP Small Heaters for Office Room Desk Indoor Use

TL;DR: All portable electric heaters draw 1500W and gradually circulate air through a room until the ambient temperature matches the internal thermostat. This one just does it cheaper. This model looks sleek, it's very light, the case almost immediately cools down after powering off, and the fan is pretty quiet. It works as intended: 1500W (the highest wattage allowed in the US and a standard with all heating units) is quite hot if you're in front of it, but the unit is pretty small so the amount of cold air it can suck in through the back is going to be small too. It's best used under a desk (where the air is partially trapped between your legs and the "fireplace" surrounding the heater) or at face level where you can just feel the heat right away. There are a few additional drawbacks. The safety anti-tip switch is just a short peg, so it's got a hair trigger (uneven surfaces, say like tile or brick, the peg might slip into the grout gap and shut the heater off). There is also no real "low power" mode; typically low-power would be ~800W whereas this unit still goes at ~1100W (note that the fan always goes at a consistent speed; the low-power mode just lowers the strength of the heat). And of course any knob-style thermostat is very inaccurate; the lowest the knob goes is like 75° and unless the room is barely bigger than the heater, the ambient temperature will almost never hit that. If you're getting a portable unit, emphasis on portable, this should be your go-to. On high, it can still keep an already room heated. It won't instantly warm up a small room (give it 15 minutes), but it will definitely be great as an under-the-table heater for your feet or an immediate hand warmer after washing vegetables.

I think this is probably the best space heater value on Amazon right now and have tried a few. The fan seems reliable and quiet, the heat is constant and has two levels, the unit is solid and attractive. There is only one downside to this heater which is that the minimum temperature of the thermostat is probably in the 60s so you certainly can't use it by itself in, for instance, a pump room that you want to keep over 35 so it doesn't freeze. I would probably prefer 750-1500 instead of 1000-1500 but that is a very minor quibble.

Very good heater, heats small (8'x12') office fast and keeps it warm

I ordered 2 diff brands and it was this one I decided to keep. Very quick warm up even on low, great air flow. I lightly pushed it w my elbow doing something else and the auto shut off worked immediately. So that was reassuring of that safety feature. It had a decent amount of cord length and I can’t even hear it when it’s turned on. Very quiet. I did use it a few times in the bathroom opposite side, away from bathtub. My bathroom gets so cold in my apt. (But its warm everywhere else, go figure) This little heater sat nicely on the floor (away from any water!-I wouldn’t chance putting it close to me on the toilet or bathroom sink ever!!!) It felt so great not to have goosebumps half way thru my bath/shower. Only downside is there’s no real handle to hold when you’re picking it up to move. There’s this little ledge on the back of the heater I can barely or securely hold onto and I have small hands. Not a big deal, it’s light to move and I use two hands. I’m so happy with it:)

This little unit provides a suprisin amount of heat

I put this under my desk around my feet and it keeps me nice and toasty. I've kicked it over a couple of times, and it shuts off immediately. Heats a 10' x 16' in about fifteen minutes if not to just keep me warm while sitting.

I bought this heater to use in my downstairs half bathroom, as the bathroom doesn't have an HVAC vent, and I prefer not to leave that door open all the time. When I tell you it will burn you out of the room, I'm not kidding; this little heater is powerful. It can easily turn my half bath into the Seventh Circle of Hell. The heater has a thermostat, and although I saw a review that suggested only the lowest setting would really work for you, I've found that a little above that (and definitely barely a quarter of the way up) works to keep it a comfortable temperature in that room. I've paired the unit with a smart plug to make it easy to turn the heater on and off (make sure your smart plug can handle the heater's wattage). It's a great combination. I will admit that the safety switch can be annoying, but it's designed to stop the unit should it tip over - and it's a manual button, so if you lift the unit to move it, it's going to turn off. But I'm grateful the unit has this built in, so I can't be mad at it at all. I absolutely recommend this heater for use in small rooms - but I would avoid using it under a desk unless you want to subject yourself to the infernal fires of Hades.

I bought two of these. They work great, everything functions properly, they put out lots of heat for their tiny little size, I'm impressed. I have one hooked up to an Amazon thermal control to keep a small room within a few degrees range for starting seedlings and it works flawlessly. The price is unbeatable, too. Best heater bargain on Amazon.