it was like 2 degrees and I never had a problem with ...
588508
dude I used this elk hunting in the Gila in new mexico,  it was like 2 degrees and I never had a problem with warmth.  hands and feet different story but everything else warm and awesome.
4186870
Works great, even at 110 degrees F.  I am using this switch in an attic to connect a couple Ethernet cameras to my network.  It can get up to 110 degrees F, in the attic and I have not had any issues.  A "calculator" type power adapter is included.  No need to worry about in/out, or "flip" Ethernet cables, the switch figures that out automatically.
3383234
It works just fine. USB 2.0 is a little slow but it's not to bad. I was worried about the heat but it doesn't get to hot.
4867420
Only thing is that it get hot sometime and I do not know why but it still work without a single problem.
439000
It has worked perfectly.  It has maintained the right temperature during the very cold spells.
3490379
I took it camping in the Uinta mountain range in Utah. Nights get to 35~40 degrees in august. I was one cold guy.
379535
I live in Florida where afternoon temps in my garage can exceed 100 degrees.... impossible to do any work there.  All I wanted was some relief, and this unit holds my 2.5 car (partially insulated) garage to 82 to 84 on those high temp days if I turn it on in the AM. That's adequate to work there.  I could have spent thousands on a built-in Mini-split unit or I thought about a window AC (not allowed in my village). This "portable" is not used all the time, so it's perfect for my needs.  At first I vented this successfully through a side window.... OK but too long exhaust hose and blocked some daylight.  Now I've poked a hole through the garage back wall, installed a 6" screened wall vent hood (from Amazon), and vent A/C with shortest hose straight out.  Since I don't use the A/C all the time I'm not seeing too much water accumulation and haven't yet connected the water hose.
3653425
I brought this jacket at beginning of winter. It was 46 degrees outside and wind, I was nice and warm.  Also I didn't feel like I was just pulled out of the washer when I was done with my ride. It is breathable when you open the vent and front zipper a little.  I really like this jacket.
2392418
I wrapped this around my roof rack all winter and drove from Florida to New Jersey and Back again with no problems. It took a couple sets of batteries but it never had trouble with weather from 5-90 degrees. I would buy it again but this thing is a champ so I can keep using it!
290479
I didn't expect it to be so warm. I went to Rocky Mountains and although it was summer, the temperature in the high altitudes dropped quite low (around 40F). I did not complain of being cold at all while all my friends did. I didn't test it in 0-degree but I think I could easily go down another 15 degrees, I'm not sure about 0...... Another thing is that I was hesitant about buying mummy type sleeping bag because I thought I would be tied and and unable to move all night. Surprisingly I was very comfortable. It might be because I'm quite petite - only 5,5 tall.
807944
Used it on a hike to 9800ft and it got down to 16 degrees. I wasn't cold using this pad and 1 mylar sheet. Never felt uncomfortable or any hard ground feeling after a 12hrs of darkness
1910448
Left it in my car for an entire day while I was at work. The temperature was consistently 90-100 degrees outside. However, came out at the end of the day, and there was still ice in the bottle. Needless to say, I was amazed. I would highly recommend this bottle if, like me, you prefer cold water.
2067084
I don't know if it's inaccurate or just really sensitive. I had the unit and the cable sitting in the same spot and it was reading a 5 degree difference. Then while it was snowing I put the cable part outside and kept the unit inside, and it said outside was warmer than inside (my inner gut thermometer told me that was incorrect). Although a possibility was the sun was hitting the metal probe and maybe making it warmer? I don't know. Overall it's alright. I wouldn't buy it again, but it seems to fluctuate in tune with the weather so it gives me a ballpark temp to work with.
3032027
I've had it for a year and it works amazing. The only thing is after a year it reads 2 degrees lower then what the actual temp is. Simply solved by monitoring with a thermometer and turning it up an extra 2 degrees
3307881
works good it is about 2.4 degrees off that is the only issue i have that is why it did not get 5 star rating
1684836
Seriously, I'm an avid amazon shopper and I never leave reviews. This a/c is awesome. I was a little skeptical like I always am when I see negative reviews. But I seriously went from surviving 85 degree muggy nights in my apartment to 73-74 degree great nights of sleep.
60579
I know some buyers complained about poor heating elements or other minor issues. I bought this in December 2014 and used it right away.

This unit was able to keep an even 225 degrees in 25 degree weather. The few times I had to open the door to rotate food it took a few minutes to get back up to temperature but not too long. If there were problems with producing enough heat in the past, it appears Masterbuilt has addressed them.

If you are not sure about which smoker to buy, I highly recommend getting a unit such as this one without a glass or plastic window especially if you live in a colder climate. That window will bleed heat and make the heating elements work harder.

As someone who is experienced with smoking food already, I was able to set this up and use it right away without any problems. There are no issues or surprises.