VEVOR 8KW Diesel Heater All in One, Diesel Air Heater with Bluetooth App Control, Portable Parking Heater Automatic Altitude Adjustment Max 18045 ft, Remote Control and LCD, for Vehicles and Indoors

First off, it was a surprise to see how small it really was in person. I was expecting more of a full-size briefcase heater. This doesn't disappoint, just means less to carry around and an easier place to store it when not in use. I pulled the case off to inspect the fittings and hoses. You'll see in one picture that there was a remnant of diesel left in the line when they do leak tests. I didn't really follow the instructions when installing the exhaust pipe and intake, as it's fairly self-explanatory. I did, however, do what it said and prime the system before startup. It's halfway into the book, just before the troubleshooting section, rather than at the beginning(where you think it should be before you go hitting the start button after installing components), the directions were a little vague when it said to let it auto start, but to stop it halfway into the count? It counts from 300 seconds down to 0, so...I let it count down to half (150), and I hit the off button. The pump is a little loud, even though I set it up outside, knowing the exhaust would be terrible. Yet, this will be set up outside my camper, so I don't really care how loud it is. Just think of it as a louder-than-usual metronome. After the speaker on the digital controller said, "Have a safe journey". I hit the on button, and the display lights up with a neat readout of what the system is doing at the moment. It was turned up high, which I wasn't expecting. About 1 minute and 30 seconds later. The blower on the backside revved up like a turbojet, and the exhaust billowed out thick white smoke. After about 30-45 seconds, you could hear the combustion rumbling, and the white smoke turned really thick and grey. (Really glad I put this outside rather than try to port it out an opening under the garage door) Close to about 2 minutes after start-up, the grey smoke went away (getting ready for the fire department to show up from a call from the neighbors). The smoke mellows out into a blue/white puff that's fairly consistent. I turn the heater down to "45," which seems to be the lowest setting on the temp. I couldn't find anywhere in the manual what these numbers mean, sure isn't Celsius. I let it run for another 10 minutes on this low setting and eventually turn it up 2 more notches, and you hear the "clacking" of the pump match the output needed for more heat. It was 42 degrees outside when I started this heater. I couldn't hardly keep my hand in front of the output vent as it was very hot on low, so I'm sure this little heater will do wonders up in the mountains when it's 10 degrees out. After about 15 minutes of runtime, I saw the white smoke turn into almost clear exhaust. Only the vapors of the pipe were emitting any kind of noticeable burn off (which I would recommend turning this thing up on med/high to give that pipe a nice patina and remove any harmful oils/paints it might have on it). I think in total, I ran it about 20-22 minutes; it was starting to get dark, and I wanted to make sure it worked and to break it in gently. I do caution; you must with any kind of combustion heater...let it shut down properly! Never pull the power from it while it's running! It took about 3-4 minutes to auto-shut down; it needs to dissipate the heat in the exchanger and blow out any remnants of vapor in the burn chamber. If you only hit shut down and then pull the power before letting it cool...you could damage the components. (Be sure you have enough battery to let it shut down fully) Wait for the fan on the back of the unit to shut off, and the controller voices "Have a safe journey," and the display shuts off. As for the quality of the machine, it's a nicely painted case cover; there are some sharp edges on the black frame, so please be careful. I doubt the hose clamps are stainless steel, so don't expose them to too much water. The green fuel line will be the first thing to harden and crack - be sure to have extra fuel line sealed in a bag, ready to swap out when that day comes. Purchase an extra fuel pump and glow plug if you are depending on this to be your only source of heat out in the field. I tested this using a 15ah battery from a generator. If you plan on using this overnight, I would suggest no less than a 50ah battery with a means to charge it after the first night. It will be mainly used on the outside of a camper (ported into the coach from an existing vent on the side), possibly twice a year for about a week at a time. I highly doubt this heater is meant to be used daily for months on end. I'm pleased with the ease of assembly and basic components that make its use and repair fairly simple. Instructions need a fluent English speaker to help with structuring the flow of things, so it's better comprehenable. As long as it works as it should and it presents no dangers with running it, I can see it lasting a good long time. You cannot adjust the time on the display without an engineer to help walk you through the instructions. I downloaded the app as listed in the manual (don't bother looking in the Play Store for a Vevor unit heater app), even though the controller is straightforward and the digital display is workable. The app is a much better option when dealing with the heater; you get to see the output, the time, and adjust for altitude. Start-up/shut-down, and see its actual temperature, along with setting a timer. Like any other apps, I'm sure each time you break the power connection on the unit, you'll need to sync the Bluetooth each time. We'll test this theory. I'll update after a few more test runs and after the first trial in the field.

So far so good. I've had it a little over a week now. I installed it into my camper as for we have 4 children and I did not feel safe placing it inside. It has gotten down to 20 degrees here in Wisconsin and kept the camper at 80 easily. It does have an auto shut off you can set the temp you want and it will get it to that temp and shut off just like a regular furnace. On the nights that it has been in the 20s i only used one tank in 12 hours so definitely is efficient. I get just about 200 degrees F coming out the pipe into my camper so it definitely blows good heat. Does have a tick to it from the fuel pump but for the price and the heat it puts out the tick is fine. Does leak from the bottom of the tank a little where the fitting into the take is. If your wondering about relocating the screen it only comes with about 3 inches of cord. Is what I did is used some 3 wire cord and slices the connector on the screen side splice together the 3 wires on one side of the connector so I could connect and disconnect the wires if I want to move it i hardwired the rest of the wire to the screen side and put connectors on and such and ran it about 10 feet and it works just fine the only thing I can tell is the the volts it says the batter is at are way lower then it really is but I chalk that up to the extra wire from the heater to the controller. I have ran it like this so far and it works fine. The app works great to see the status of the battery the diesle heater temp also run status and so forth the app is worth it. Going to buy a second for backup or other uses as it seems to work amazing so far.

This would be 5 stars if it worked as designed, and 4 if I could get helpful and productive customer service. But since I cant get any resolution to my problem, it's 1 star, zero if that was an option This is the second Vevor product I have purchased, and I've had problems with both, and the customer service is completely and utterly worthless. The heater works, in that it does heat, actually very well for the fuel consumption. Not sure where others are getting so many error codes. I've only gotten 2, one when it ran out of fuel, and the other when I put a duct extension on, and it didn't like that the outlet temp got too hot - and shut down safely, as engineered. If you want to extend the heat outlet, transition from 3" to 4" after the initial connection to the heater, or use a smooth, 100% metal, 3" duct. My primary issue is the heater won't shut down when it reaches setpoint. It will slow down, but not stop heating. I have read others say they had a similar issue, and after much unproductive back-and-forth with Vevor, have gotten new control boards. Not sure if that fixed the issue or not. I have been texting/messaging back and forth with VEVOR for well over a month, sent in a nearly 2-minute video clearly showing the problem. They finally agreed to send a new display (sort of), I asked if that contained the PID (or whatever system they use to manage calls for heat and stop heat), and I then got a follow-up message saying the previous email was wrong and the operation was normal. It's not. No reason to have a thermostat if it just keeps heating, even if it's low heat output. These heaters are intended for small spaces, and are supposed to be automatically controlled when equipped with a thermostat. This particular heater does not do that. I am very happy with the heat and fuel usage. For others that have complained about the noise, smoke, the endless errors, they're either shilled reviews, or they've tried to modify it, not followed instructions, or used bad/wrong fuel. These are basic systems, and they generally all work pretty well (I believe there's only one or two actual manufacturers of the primary burner. They are put in different color/size cases, and they might have a slightly different controller with additional features, but the remainder of it is identical). You can hear the fan and the pump, but that's expected in a unit that produces this much heat and doesn't need an HVAC professional to install it. It does need a decent power supply (battery or transformer), but mostly for startup. Once it's running, it sips fuel and power. There is wisp of diesel smoke out of the exhaust at startup, maybe 10 seconds (you MUST vent to outside the space your heating), and then it's pretty odor free. For context, this heater is in an off-grid cabin, with a 12v power source running off 110v (solar), at an altitude of 7,200 ft. In general it works great if I need quick heat at the press of a button. The customer service has been the worst, though, as in lots of dodging, and mostly a lot of misunderstanding. I will now readily pay more for a product if I know I'll get help when I need it. The Chinese to English translation is bad enough, but the lack of understanding is overwhelming. No more Vevor products, for me.

For a small space, smallish camper or a pickup truck bed, this is the BEST way hands down to heat. Safer and dryer than a buddy heater. Simpler than propane. Cheap to run, doesn't use much diesel when ran on low, less than half a tank a night. So good I think I'm going to get another just so I always have one in my camper, and a spare in my truck. The clicking from the fuel pump doesn't bother me much, I leave the whole unit outside of my camper or truck and it provides a bit of white noise when I do hear it. If you have a larger camper, say over 25' I wouldn't use one of these unless you only heat one area, they work best heating a more confined space. For the price, and for what you get, it works as expected, the altimeter is even pretty accurate, I take it up to higher elevations on the East Coast (say 3500'+) and it reads my camp at 1.1km.

I love this little thing however once I first bought it it had some trouble starting, once it eventually did it would stall out and die / turn off. Did some digging and fixed it. While I was under the case to fix the problem I found diesel leaking everywhere from the tank.. so that was a mess to clean up. Found out it’s leaking from the drain tap that’s tapped into the plastic tank itself.. still not sure how to go about this, I’ll probably just have to buy another tank I’m guessing since it won’t seal. What was the fix of it not starting? Well a faulty glow plug on the brand new unit.. threw a E03. Once the plug was pulled a crack in the glow plug was found. Reason being for it not starting. Ordered and replaced the glow plug with some kit I found on amazon and now it runs great. I guess it’s you get what you pay for so I’m not angry or anything just a little annoyed. On the bright side, the heater gets hot! Bought it for my little shed I have for when I work in there during the winter months and works perfectly! Of course that is everything I’ve done to it.

I use this as my primary heat source in my converted school bus-motorhome. This unit works very well, and can easily keep my entire bus (approx 200 sq. ft) above 70 degrees, even when the outside weather is below freezing. Both the included remote, as well as the bluetooth phone app work well, though I prefer to use the manual buttons on the unit itself. The instructions and included hardware and components made installation pretty quick and straightforward. The heater does make some noise when running but i would say it is comparable to, or lower than, a conventional electric space heater... and much more effective. This unit runs off a 12VDC power supply. Startup/ignition current is around 12 amps, but my power supply shows that it only uses 3.4 amps while running. I like this feature best, because I can still run my heat in the event of a snowstorm-induced power outage -a big concern in my area.

I ordered two, and they kept our roof top tents nice and cozy down to 15F with a lot of power to spare. I won't go in to much detail on the good, I feel like these are well known units. I will critique, without even taking a star, its "thermostat". It's basically useless the way they're made, and most of them are made the same way. The thermometer is in the LCD screen and I can't picture many scenario's I'd want the unit itself in the space I'm heating. You can get various devices to work around that though. Or extend the cable for the LCD screen so you can move it inside the space you're heating. But even then, it won't turn off. It'll just cycle down to its lowest power setting. So if that's too much for your space you're a bit screwed. Don't buy one too much bigger than you actually need. I'd say 5kw is borderline for a RTT. What I bought, and what I use it in. I kind of wish I had gone with 2kw. It was great at 15F but if I were wanting to warm it for say, 45f, even its lowest setting would have probably been too much. I'll update if a trip proves that wrong to me. For a sense of scale, I think the highest I had it was 3 (out of 10) on the 15F night. You can always just open up more of your tent until you find a sweet spot though. Outside of that, well, I'll never be cold while camping again. If my car will be anywhere near where my camp is set up and its cold this thing will be coming with me.

This little heater really works well for it's intended purpose. The "no installation required" is a little misleading. At the very least, the exhaust hose has to be connected to the heater and placed outside a window or garage door. The input, I suppose doesn't really need to be connected, but I would just to reduce the possibility of a mouse or other vermin from getting into the heater. The heat outlet really shouldn't need to be connected, but it is nice to have some direction for the airflow. The inlet and exhaust hose are attached to the bottom and there isn't enough room to bend them outside the box unless you sit them up on a 2x4 supporting each end or other. If you could mount it in a place that these two hoses would drop outside directly underneath the heater would be ideal. You will need to have a minimum of 12v 15A power supply to operate this thing, a car or motorcycle battery would be ideal. But no installation is a misnomer. The sheet metal is thin, but what would you expect. Outside of that, the thing really kicks butt once you figure out where to put it. Vevor appears to have a bad reputation when it comes to customer service, so return it to Amazon within 30 days if it doesn't work, else you might be stuck with something that doesn't work. Bottom line, it was worth the money and works well, but it really isn't meant to be as portable as a little buddy heater or the like, but diesel is the cheapest fuel for heating out there. If it will run 24 hours on one gallon of fuel, that is much cheaper than propane.