HCALORY 12V Portable Diesel Heater,Toolbox 2 Diesel Air Heater 8KW 6L All-in-One Parking Heater with APP Control Work at Altitude Max 20000 ft for Car Trucks RV and camper

Easy set up and works perfectly. Bluetooth connected without a problem. You'll need to buy ducting separately. Super quiet once its up and running.

At first I was worried after reading all the reviews on diesel heaters and hearing the horror stories some people have had. The unit came well packaged, all parts were as advertised. After unpacking I inspected the unit and it looks sound and well built. Like most, the directions are not the best, but if you take your time you can figure it out. The few things you have to put together are easy to figure out via the pictures. The directions on the App are easier and better to understand. I set it up, primed it and turned it on. System came up first time. The fan and pump do make noise but it's nothing annoying. Love the heat it pumps out. I'm using this in a 6'X12' box trailer camper conversion and it will keep it at 60 degrees on level 1 when it's in the low 20s at night. All three input options work, the front panel, keychain and app. I am extremely happy with this purchase.***Update***Have been using the heater all winter without any problems, I've never let it run out of file and it always comes on when needed. The timers are nice but the thermostat function is +- 6 so that is a huge swing and useless to me. I have five timers set for the night, it will come on to the level it was last on, I have it on two and run it for 30 minutes. Warms up the camper and with them spread out I'm never cold.This heater has gone above and beyond even with the few issues it has. Will buy another if ever needed.

The media could not be loaded. The product as shipped is very good, however I chose to upgrade and enhance the original design. I changed out some parts and introduced others, all for a more efficient, functional user experience.I replaced the fuel line with what I deem, a better one. I installed a water displacing fuel filter and a fuel line shut-off valve for safety. I replaced the poor quality hose clamps with stronger ones. I sealed the exhaust connection with a high temperature silicone sealant. Incorporated a high-temp silicone 3-1/2 to 4 inch elbow to guide hot air output. I routed a slot in the case cover, allowing me to monitor the fuel level inside the fuel tank without having to open the case. These were all performed with further safety in mind as well as improving this units usability.Once I accomplished all the above enhancements, I then fired up the unit for a successful first run. The unit performed well - as expected. It’s a good design overall, functional and transportable.With the ability to control this unit by way of onboard display as well as a (included) remote and simple (Bluetooth) software for your phone, monitoring and controlling this unit is super easy. The app is very simple, however it provides essential information like altitude, internal body temperature, ambient temperature and input voltage. It allows you to control fan speeds, thermostat and altitude settings.Some things to be aware of:• The fuel tank should be inspected for manufacturing debris. Mine needed to be removed, washed out and let to dry. There were chunks of various things left in there from manufacturing.• The unit begins its process slowly on start up. It heats the glow plug, then begins pumping the fuel. The fuel line is circuitous and it may take a couple “pumping sessions” to finally get fuel to the combustion chamber.• The unit requires the most electricity at this start-up phase (at least 120 watts). While running at full speed, the unit used only 35 watts to maintain heat.• The pump clicks consecutively and somewhat loudly. It quiets down while running at full speed and becomes hardly noticeable. The overall noise level of this device is fairly loud (air flow mostly).• As mentioned, the opening where the hot air comes out is 3-1/2 inches in diameter. The manufacturer provides an expandable tube that fits this port, however it is rather short.• The plastic case, although similar to a Pelican brand case, is not of that quality. The walls of the case are structurally reinforced, but the density of the plastic is nowhere near that of a Pelican brand case.

I’ve had an interesting experience with this portable diesel heater, but overall, I’m really impressed with it. My first unit worked great for about 6–7 hours before the pump stopped working. I was using some very old, possibly contaminated diesel, so that might have been the issue. When I tried to return it, I learned it’s non-returnable due to the fuel content. However, Amazon was kind enough to give me a voucher for about 80% of the value, and I decided to order a second unit.Since I already knew the pump was the problem and didn’t want to uninstall everything, I swapped the pump from the new unit to the old one. That solved the issue! The heater has been working flawlessly for about five days now. The swap took me about 1.5 hours since I was figuring things out as I went, but it was surprisingly easy to service. I also contacted the manufacturer, who promised to send a replacement pump. It’s been about 10 days, and I’m still waiting—likely due to shipping from China during the holiday rush. In the meantime, I now have a full set of spare parts from the second unit, so it worked out well!Performance and Features:This heater puts out a ton of heat and is perfect for my needs. I’m using it to warm up a 1,000 sq. ft. space in sub-freezing temperatures, and it keeps the area warm enough to comfortably wear just a shirt. It uses about 1 gallon of diesel per day, which feels very efficient.One of the standout features is the altitude sensor, which adjusts the fuel-to-air ratio based on air pressure. This ensures the cleanest and most efficient burn possible. It’s even sensitive enough to account for normal changes in barometric pressure, which I find impressive.I also measured the exhaust gases, and at max power, the temperature was around 70°C, meaning minimal heat is lost through the combustion exhaust. Very efficient!Setup Tips:I mounted my unit indoors, but the included exhaust pipe was too short, so I had to buy a longer one. You’ll also want an adapter to ensure that the hot exhaust pipe doesn’t touch your walls, as it can get up to 220°C with the included short pipe (but much cooler with a longer one like mine). If noise is an issue, you can mount it outside and pipe the heated air inside, though that setup might require larger holes in your walls and a way to protect the heater from the rain.User Experience:The Bluetooth functionality is fantastic! I can monitor and control the heater from a few rooms away, which is incredibly convenient. It’s a feature I wouldn’t skip.One minor inconvenience is that you can’t easily see how much fuel is left without opening the unit. To fix this, I cut a small opening in the plastic lid to check the tank at a glance—problem solved in 15 minutes. The unit is generally easy to operate and service.There were no leaks, except for one time when I overfilled the tank while it was running. Even then, the risk of fire is minimal since it’s diesel. I haven’t noticed any smell of fumes or fuel indoors. The outside combustion exhaust may have a slight odor during the initial start-up, but once it’s running, the combustion is so efficient that there’s almost no visible exhaust and there's zero smell.Pros and Cons:I love that you can set a specific temperature and let the heater adjust its power or even turn off altogether, all automatically based on room temp. Alternatively, you can manually set a fixed power level. The heater also comes with cables to connect to a 12V battery, though I’ve been running it from a wall outlet with no issues, using the included power adapter.My only complaint is the noise. If you’re using it in a living space, you might want to consider mounting it outside, though that comes with trade-offs in efficiency and bigger holes in your wall.Final Thoughts:Overall, this is a fantastic heater, and I wouldn’t hesitate to buy it again. It’s powerful, efficient, and loaded with useful features. For a workspace or emergency heating, it’s perfect for indoor use as long as you vent the exhaust gases properly. Highly recommended!