After some deliberation, I went ahead and ordered this unit. There is no shortage of bad reviews, but I liked that this one had a built-in thermostat, and the 6,000W version is rated for a 30a breaker.Starting with power supply: I emailed Comfort Zone ahead of ordering and asked for a manual to be sent to me to make sure a circuit I already had (30a, 240V) would support it. They emailed me a PDF, and it had the table I attached here, showing the unit rated for 30a breaker and 10AWG wire. This was key in my decision, since I already had a dedicated 30a, 240V line in my garage. What is odd, the manual sent with the unit doesn't have this table, and recommend 8AWG wire....not sure why. I will say, I leave this unit on 4500W (medium) mode for my garage, but I have run it on 6,000W mode with no problems. I have an Emporia power monitor, so I can see it pulling full rated wattage on all settings.As far as operation, I have had zero issues. I am using this in a 2-car garage that's reasonably insulated. I live in Ohio, so in the winter we get fairly cold, but my garage seems to stay 10-20 degrees above ambient. I wanted something to keep the place above freezing so wood glue and paint stays good. So far, this unit has delivered. Being able to run it down to 41 as a low setting was key in my decision so on terribly cold days I can back it down to save power.As far as the short cycling, when I first fired this up, it did seem to short cycle, but I have a thermometer in the garage about the same height. It is always within a few degrees of the readout on the heater. I put a thermometer on my work bench, and it was about 4-5 degrees cooler. After letting it run all night, it cycles less - which makes sense because the temp of all the things in the garage are getting heated up as well. The temp split from work bench to heater is constant, but until the laws of physics change, heat will rise. Maybe they made an change since some of the review or maybe I got a good one, but I just have not had short cycling issues others have talked about.Now, I will say, I was underwhelmed by the fan power on this unit. I expected a much higher powered fan. I don't have tall ceilings (9 feet), and I have this angled 30 degrees down, and I can't feel the air in my face when it is on. This has no impact on it's ability to heat the room, but if you want to stand under it and "feel the heat" - it's less than impressive. I dock no stars for this, because I see this wrong expectation on my part. I have gone out to work in my garage a few nights, and bumped it 5-7 degrees while I am out there, and it brings the temp up within 20 minutes.The only other con is that the remote feels cheap and the battery lid doesn't like to stay on. That's bit of a longer term concern, but doesn't really impact my use for now.Overall, for the price, this is an excellent unit. I would recommend. I have only had it running for a week, but I will update accordingly.

This unit was very easy to install and makes almost no noise when running. We installed in a 900 sq ft attached garage. The objective is to prevent exposed water pipes from freezing. We have the heater's thermostat set to 45 degrees. This is northern Indiana and we see some sub-zero temperatures in January and February. This little heater has done a very good job maintaining the garage temperature in the 40s. In my opinion this unit is an excellent value for the money.

Remote doesn't work, thr thermostat thinks it's 15- 20 degrees warmer than actual room temp. Installed in garage - turned unit on and it recognized the temp correctly at 58 degrees. Within 10 minutes, thermostat read 74 degrees and turned off. Garage actually went from 61 to 63 degrees. Installation was way enough but the heat output is weak, the remote doesn't work, and the thermostat is way off. This will be going back....Update 1:Received another unit - this one included a functioning remote, but unfortunately the heater stopped working after the first 5 minutes. It no longer gets hot, just clicks on and the fan blows air. Using the remote from the second unit, I can now control the first unit. The manufacturer suggested a few things to check:- Angle the unit down (this was already done)- Set the louvers straight to ensure max airflow out of the unit (this was already done)- Remove the ambient temperature sensor wire from the inside of the back of the unit, and leave hanging outside of the unit (this really helped!) - now the unit reads the actual temperature in the garage accurately and continues heating until the target temperature is reached.

Things I like about this heater: It is absolutely silent and could keep a small area warm enough to prevent rust in the cooler months. I live in the mountains of NC and we get a significant amount of precipitation so that is useful in my shop.Things I don't like: It is underpowered if you want to be warm. It has never even gotten it up to even 60F, even when temps outside are 40. I pulled out the temperature sensing wire so it would not short-cycle because it comes attached to the outer metal housing and then I dangled it down below. So I have accurate temp sensing and can confirm it with a thermometer. My shop is only 15 x 24 ft. The walls are insulated but not the roof. Today was a typical scenario. It got down to 15F last night but today was up to 40F and the shop was in full sun for a couple of hours at the warmest time of day. I had it set for 60 but it could only managed 43F. This is the best it can do.

Works well. My 12x24 shop, with a single car insulated garage door, is fairly well insulated, and this thing keeps it warm. I replaced the red cube, 5000 watt, hot box marketed under several names, which rattled, had an inconsistent thermostat, but otherwise kept me warm. It died. This unit does not rattle, has several wattage options (I use the medium setting 4000W?), and the thermostat holds a consistent temp. I can also hang it from my ceiling, whereas the red box sat on the floor and had to be kicked around. So far so good.

Day 1 .....easy install. For those that would like to know in advance. This is a 3 wire hookup, not a 4 wire. Use 8 ga wire.....you wont know that until you get the unit. I used 10 ga in an SO cord but lucky for me; the lowest setting is totally sufficient to warm my 2 car garage so I am fine. I ordered the one with the timer, thermostat and remote. I tested it out and set to 72 degrees.....went inside the house for an hour and came out and the entire garage was a consistent 72 degrees.My garage SHOP time is going to be 2 hours longer each day. The wife will never see me again.