So far i’m extremely impressed with this Chinese heater. I must’ve read a thousand reviews like most folks and how too videos on installation tips. I could’ve gotten the same model for $20 less then the vevor, however the vevor had much better customer reviews when it came to contacting customer support for any issues. I’m far from being an engineer by any means but I’m pretty mechanically inclined and for anyone with a bit of common sense could rip one of these units down and put it back together in no time. I installed mine under the seat of my popup camper. It’s around 15 degrees out here and this thing has warmed up my little Coleman popup camper in about 45min to a comfortable i’m in my t shirt warm. Many folks mention the loud clicking of the fuel pump! YES IT IS, however it can be easily remedied with a couple simple modifications to your install. I wrapped mine in some foam rubber and mounted it inside a little styrofoam box I carved out of a packing box styrofoam chunk ! Anyhoot folks it works awesome. There’s a slow start and stop process as just like a diesel vehicle there’s a diesel type glow plug that needs to heat up and during shut down process it burns off any excess fuel, so VERY IMPORTANT, not to interrupt this process by cutting the 12v power supply or you’ll only cause yourself start up problems next time around. There are many YouTube tutorials and videos on installation and also on how to decipher instructions !!! I found many tips to be helpful in my installation. Also another important point. Make sure you pop your heater open and check that all bolts are tightened up including your glow plug. There aren’t many moving parts Or very much at all to these diesel heaters, in fact there pretty basic in operation, however it would truly suck to install your unit and run it only to find it wouldn’t start up or it runs, but you got a puddle of fuel laying underneath your unit after shutting it down. I read many of post with this very issue or watched people take them apart only to find that the head bolts were only hand tightened or even a glow plug that was basically just sitting in its seat, but not threaded all the way in.!!! Lmao I opened mine up and checked everything and all was good fortunately. Maybe mine was assembled on Thursday, who knows? LmaoHope this helps anyone looking at this vevor 8k. I love mine.Next will be longevity. I’ll get back in about 6 months.1/15/25 I’ve been running this heater nonstop since I installed it a couple weeks ago and it has run flawlessly. I’ve been changing the temperature settings up and down and also run it manual and by temperature setting. I have actually turned the heater off and on a few times with one shut down period lasting a day just to make sure there would be no restart issues. Again it operated flawlessly and restarted right up. I’m extremely impressed so far with this heater and believe it will serve its purpose of keeping my popup camper warm during cold camping.