This is an 8kW diesel air heater from Hcalory. It runs on 12V, 24V or 240V power, so it works in a van, boat or shed. The 5L tank burns just 0.1 to 0.36 litres an hour.
The Diesel Air Heater HBH-3S has an aluminium heat exchanger with 18% higher combustion efficiency. It heats spaces of 20 to 25 m². Warmth arrives in 3 minutes and the outlet reaches 100°C within 5 minutes.
You get 10 heat settings, a timer and a thermostat mode. Control it by app, LCD panel or remote. The pump is silent and the heater adjusts itself for altitude from 1,000m to 5,000m.
Aluminium heat exchanger - The upgraded aluminium body gives 18% higher combustion efficiency. What does that mean? More of the fuel becomes heat. The heater warms a 20 to 25 m² space and feels warm after 3 minutes. The outlet reaches 100°C within 5 minutes.
Cold start glow plug - The glow plug preheats for 1 minute before ignition. It then runs for another 30 seconds to keep the flame stable. Why does this matter? Cold mornings are when heaters struggle. This one is built to start in temperatures as low as -20°C.
Low fuel use - Fuel consumption is 0.1 to 0.36 L/h across the 8kW range. The 5L tank gives long run times. One reviewer got two nights on low heat from a single tank in a 4m bell tent. That keeps running costs down.
Auto start-stop - A temperature sensor checks the room all the time. The pump stays in standby and only fires when needed. So the heater switches on and off to hold your set temperature. This cuts fuel use and avoids big swings in heat overnight.
Three ways to control it - Use the Bluetooth app, the LCD panel or the wireless remote. The remote works up to 30 m away. The app works up to 10 m. The app sets the timer and all 10 heat settings. The control unit mounts using the 1.5 m extension cable.
AC and DC power with safety cut-outs - Run it from 12V or 24V in a vehicle. Or plug into 220-240V AC at home or on a campsite. Protection covers overheating, short circuits, reverse polarity and overvoltage. The heater must be exhausted outdoors to prevent carbon monoxide poisoning.
Yes, but only if the exhaust pipe vents outdoors. The heater burns diesel and makes carbon monoxide. The listing warns that it must be exhausted outside to prevent CO poisoning. The air it blows out is clean heated room air. The combustion gases go through the exhaust pipe only. Fit a CO alarm in any enclosed space as a sensible extra step. Check that the pipe clamps hold tight. One reviewer found the supplied clips snapped before they were tight enough.
It is rated for 20-25 m². Reviewers back this up. One heated a 4 x 3 m summer house in 15 minutes. Another heated a 22 x 10 ft office (about 6.7 x 3 m) to 17.5°C with -5°C outside using setting 2. A 4 m bell tent stayed warm on low. Insulation, wind and outside temperature all change the result.
The tank holds 5 litres and fuel use is 0.1 to 0.36 L/h. On the lowest setting that is about 50 hours. At full output it is closer to 14 hours. One owner got 2 nights of heating on low from a tank in a bell tent. Real run time depends on the setting and how often the thermostat cycles the heater off.
Yes. It runs on 12V or 24V DC in vehicles. It also runs on 220-240V AC through the included adapter. That covers vans, RVs, boats, garages and sheds. One reviewer noted the mains lead has an unfused plug. Fit a 13 amp plug with the correct fuse. Another said the fuel tank was not fixed inside the case. Secure it before using the heater in a moving vehicle.
Yes to both. The adaptive altitude mode covers 1,000 m to 5,000 m and adjusts the air-fuel mix by itself. It starts reliably down to -20°C thanks to the glow plug preheat of 1 minute. The plug then runs 30 more seconds after ignition. This stops incomplete burning and smoke in thin air.
The upgraded silent pump is meant to cut noise. Reviews are mixed. One owner called it relatively quiet and another said it was not too loud. Two mentioned the usual pump tick. One called the fan and tick very loud. Pump ticking is normal for diesel heaters. Mount the unit away from where you sleep if the tick bothers you. The control unit can sit inside using the 1.5 m cable.
You can use the Bluetooth app (10 m range), the remote (30 m range) or the LCD panel. All three set the 10 heat levels. The app adds timers, plateau mode, fan mode and carbon cleaning. One reviewer got the remote working but not the app. Test the app on first use. The remote and panel work without it.
The warranty is 1 year. Rating is 4.1 out of 5 from 71 ratings. 79% gave 4 or 5 stars. Reliability comments are split. One owner ran it nonstop for 5 weeks with no faults. Another had a pump fail after 3 weeks. One buyer got no exhaust tube and says the company did not send one. A few owners suggest adding a fuel filter and better clips. Keep your proof of purchase.
| Brand | HCALORY |
| Manufacturer | HCALORY |
| Model | HBH-3S |
| Colour | White |
| Country of origin | China |
| Number of items | 1 |
| Fuel type | Diesel |
| Heat output | 8 kW |
| Power source | Corded electric |
| Voltage | 12 V/24 V DC and 220-240 V AC |
| Fuel tank capacity | 5 litres |
| Fuel consumption | 0.1-0.36 litres per hour |
| Number of heat settings | 10 |
| Maximum temperature setting | 100°C |
| Item weight | 9.5kg |
| Fuel pump | Silent |
| Altitude mode | 1,000 m to 5,000 m adaptive |
| Recommended heating area | 20 to 25 m² |
| Indoor and outdoor use | Indoor and outdoor |
| Control methods | Bluetooth app, LCD control panel and wireless remote |
| Remote control range | Up to 30 m |
| App control range | Up to 10 m |
| Control panel extension cable | 1.5 m |
| Timer function | Yes |
| Thermostatic mode | Yes |
| Automatic start-stop | Yes |
| Overheat protection | Yes (270°C or above) |
| Other safety protection | Short circuit, reverse polarity and overvoltage |
| Glow plug preheat time | 1 minute before ignition and 30 seconds after |
| Minimum cold start temperature | -20°C |
| Warranty | 1 year |
