don't pay the extra for the heat function because it doesn't work
936331
tried to deal with the frigidaire people and they are impossible to reach. this is huge, heavy and doesn't do the job although it uses a tremendous amount of energy trying
527693
Thermostat worked fine for a few weeks using heat,,, then I switched over to cooling and it stopped working.  The certified repairman came out and stated it was a defective thermostat,,, he replaced it with another thermostat and unit is now working.  I would like to return this item if at all possible as I am out several hundred dollars in service calls in addition to the 139.00 I paid for a defective device.  Please respond as soon as possible, thankyou
3810002
Hmmm... I bought this particular unit because of the removable liner for easy cleaning. First the box had a red cup pictured and it was listed as red but it was blue. That was fine because I didn't care about the color. I was in my glory for about 35 minutes of travel with the cup functioning as described hovering up and down at my programmed 130 degrees. Then I stopped somewhere (lighter shuts off with ignition), came back out and started the car. The the cup now had a temperature displayed but no green heat step light... I turned up the default 120 degrees on the display to 130 and watched it climb slowly. 125, 130, 135, 140 and it just kept going! Unplugged it at 145 +/- degrees and waited a couple of minutes and plugged it back in and now there was NOTHING! No display, no heat, just dead. Why??? Because, America, you'll buy anything! I will return this.
2805213
The installation was easy and straightforward for my single-stage heat pump. Unfortunately, nothing was working: heat, cool, even the fan. I triple-checked the wiring, inspected the furnace, even manually shorted the fan control wire to see if it would switch on (it did). Finally, I tracked the problem to bad electrical connections between the thermostat unit and its mounting plate. I bent the contacts on the back of the thermostat to better connect with the plate's terminals and everything worked fine after that. I suspect this may be the cause of some of the RMAs I see reported in these reviews, so if you have a similar DOA issue try bending the contacts before you call for a replacement.
4267105
I find it ridiculous that I buy products that over and over again that are received defective, designed to not last, and this is now the norm.  I should never touch a piece of consumer electronics and have to drop it because it is so hot it causes pain.  Worked fine yesterday evening after setup.  I tried to access it this morning and it wasn't available on the network.  I went to pick it up and had to immediately drop it, not to mention the smell of overheated electronics baking.  I tossed my original Silicon Dust, the original HD HomeRun because it wasn't very sensitive; guess I need to go fish it out of the garbage because at least it worked.  I will give them a chance to replace this once against my better judgement.

I loved the first HDHomeRun so I am giving the company a second chance.

4/16:  Second device is running fine so far.  After all these years their software is still very unpolished so I use InstaTV Pro and the separate codex app. Adding Roku support would be nice for example.  They also need to increase the size of the device to allow it to passively dissipate heat effectively. There is no reason for it to be small other the to save the company money at the expense of reliability.
4094763
I did not enjoy the use of this item. I was using this for a heat pad for a reptile enclosure. It worked for a week, max, before it started giving faulty temperature readings. I know this because I tested it with two separate thermometers that I'd previously purchased to monitor my reptile temps. This thing was reading anywhere from 5 degrees to 10 degrees low, providing temperatures up to a scorching 106 degrees F. The thermostat was set, by the way, to a temperature of 94 degrees. The probe was placed directly on top of the heat pad, and the other two thermometers were reading consistently.

So, I eventually un-unplugged the thermostat temporarily, to get a reading of the heat pad without the thermostat to see if that was a manageable temperature. I rearranged a few things to allow for better monitoring, and figured I'd plug in the thermostat again, and just turn it down in hopes that maybe I could get it to a better, more suitable temperature this time. Unfortunately, it never got to that point, because the instant that I plugged in the thermostat again, it started throwing an error that there is a short circuit in the temperature sensor, rendering the device completely useless, as it won't even accept a set temperature. I am in the process of returning this in favor of a different model.
2145163
I went through 4 of these in the past 18 months.  While the product works fine when you first install and program, the heat of the sun will eventually cause failure, EVERY TIME.  Temperatures in my region can get up over 100 degrees and this device is not built for it.  Complete failure of the display and function.  I wanted to notify the manufacturer but there is no contact info on their website. What a shame.
2747625
The heat strip comes on but no fan to blow heat, only one setting. Returning for refund, i loved the fire light it did work but I need the heater to work. Was 30 degree outside and inside.
823252
This product broke my furnace fan controller ICM271 and I had to buy and install a new controller for $ 80. Last night my whole family had to sleep sweating in the heat. Who makes up for my damage?  It is requesting to connect C wire to power this thermostat, and if there is no C wire like my furnace, it leads me through video to connect to G wire instead. As I followed it, the furnace fan kept turning, neither AC nor heating, and the fan did not stop.
There was no way to stop the fan other than turning off the furnace, and eventually I found out that the fan blower controller broke down. I had to go to Grainger 60 miles away today to pay for $ 80, bought a new controller and normalize my furnace by reinstalling a new controller and the previously used Thermostat (Honeywell product but no need C wire). Last night and today my family had to have a sauna all day long. If you do not see a C wire in your Thermostat, do not buy it. If you want to experience hell, go ahead.
1388575
This device cannot be used as a heater. Whenever you try to turn the thermostat to anything higher than 1 on the max power setting you get an overheating alarm. Completely worthless which is a shame, because when i first plugged it in it puts off so much heat. Too bad.
2094066
I keep my house fairly cold in the winter (66 degrees), but like my bedroom/bathroom to be quite warm when I get out of the shower.  Therefore, I keep a space heater in my bedroom and I turn it on high when I get in the shower so it is toasty warm when I get out.  After having my previous space heater for two years, it died, so I replaced it with this ceramic surround heater.  I've had this heater since March, and it has gotten approximately two or two-and-a-half total months of use.  And it is now malfunctioning to the point that it cannot be used.

When I turn the heater on, it tries to kick-start itself for about five minutes and then gives up.  Unplugging the heater or moving it to a new plug doesn't help; it still struggles to turn on for a few minutes before it gives up.

During the two or so months that the heater was functional, I still had a lot of problems with it.

~~ I would set it to 75*, but it would turn off completely when my bedroom was still only approximately 68-70*.
~~ The timer also never worked correctly.  Setting the heater for one hour would result in either about 15 minutes of heating or about two hours of heating.
~~ The "anti-tip" technology that is supposed to turn off the heater if it gets tipped over was TOO functional.  Even the smallest variation in angle due to sitting on a rug could cause the heater to turn off.

I've now had to replace this heater AGAIN after very little use.  I cannot trust this heater to heat or to turn off when I want it off.  Therefore, it is going in the trash.
4443602
This is a great heater but...It will not work on high heat without shutting off after 3 minutes.  Sadly, the company - Optimus Enterprises does not answer their phones.  So, I would not recommend purchasing this heater if you want service from the company that makes it and promises a 3 year warranty.  However, it is a good heater when it worked and so, if you do buy this get the extended warrant from SquareTrade - they are the best and the warranty is cheap
573497
When I bought this heater, it had two reviews and 2.5 stars. One person gave it 1 star and said it didn't work. The other gave it 5 stars and said that they didn't know what was wrong with the other guy's heater. His worked 'flawlessly'! I decided to try it. $30 isn't all that bad. But it turns out the the 1 star was from a real customer and the 5 star was probably from a employee of the manufacturer. I can't imagine this heater heating up a small car, much less the bed of a pickup truck in the winters of Alaska. Really, PJDSR? This reviewer must be planted as well.

The magnitude and distance of heat that is produced by this fan pales in comparison to my own breath, which is cheaper and seems more effective. Especially since after about 20 total minutes of usage, the heater simply shut off. I'm guessing it blew the fuse, which seems like a serious design flaw. Aren't I supposed to plug it into the 12V cigarette lighter?

Luckily, returns through Amazon seem to work 'flawlessly'. I've since returned this junky box of plastic pieces and and will be roughing my travels in the cold southern winters. They don't last long.
3441103
Bummer.  It works, but...
-Current temp in room does not display on unit.
-You have to scroll past heat setting when turning off. (Which triggers heat pump for a second.)
-Pricey for a non programmable non user friendly thermostat.
2507337
The first one we order stopped working after a few usages.
The second one we have had since February 2017 has stopped working, The screen no long come on, so you are unable to control the heat setting.
1606869
I bought two of these.  The first got super hot and several ports did not work.

The second ran cooler, but after a few hours, a couple of ports stopped working.

Makes a attractive paperweight though.
2972872
I bought this after reading the mostly positive reviews for this type of heater and even for this brand.  My room is approximately 8x12 and it does not remotely heat the room.  I raised the thermostat up to 78 and the room temperature didn't change at all.  Ultimately this was a waste of a $100. My $12.00 heat fan does a much better job.  I have already mounted and painted it so I can't return it.  I guess I paid for an undecorative slab on my wall.