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onesaimei ONE-52
12KW Diesel Heater, 12V/24V/110V Parking Heater with APP Control | LCD Switch, Foldable Handle, Fast Heating, 5L Fuel Tank, RV, Camper, Trailer, Truck, Garage, Tent
Only 20 left in stock - order soon.
Rated at 12 kW (40,946 BTU/h), this all-in-one has the highest output listed, with Bluetooth app control, a color LCD, 10 heat levels, a timer and a 55 dB rating. It runs on 12V/24V or 110V AC, weighs 22 lbs (10 kg) and works down to -31 ℉ (-35 ℃), though its 9,843 ft (3,000 m) altitude limit is below many rivals. The listing gives the tank as both 5 L and 7 L, and its 0.09 gal/h (0.35 L/h) maximum fuel use is low for a 12 kW rating.
- Price
- $118.00
- Brand
- onesaimei
Prices from Amazon as of . Product prices and availability are accurate as of the date and time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of the product. As an Amazon Associate I earn from qualifying purchases.
Ranking within Category
Comparing this product to others on Nomad Gear Finder (in the diesel heaters category with a value specified):
- This product's Max heat output is the highest of 40: 12.0 kW
- This product's Max heat output (BTU/h) is the highest of 26: 40,946 BTU/h
- This product's Fuel consumption min is higher than 87% of 33 others: 0.23 L/h
- This product's Max operating altitude is lower than 78% of 28 others: 9,843 ft
- This product's Max operating altitude (m) is lower than 78% of 28 others: 3,000 m
- This product's Operating temp min is higher than 94% of 17 others: -31 ℉ (-35 ℃)
Specifications
These details are subject to change and may not be current. Please check Amazon or manufacturer web site to confirm before purchase.
- Model
- ONE-52
- Popular brand
- No
Core specs
- Heater type
- All-in-one
- Max heat output
- 12.0 kW
- Max heat output (BTU/h)
- 40,946 BTU/h
Fuel
- Fuel consumption min
- 0.23 L/h
- Fuel consumption max
- 0.35 L/h
- Fuel consumption max
- 0.092 gal/h
Controls
- Heat levels
- 10 levels
- Thermostat mode
- Yes
- Timer
- Yes
- App connectivity
- Bluetooth
Power
- DC input voltage
- 12V/24V
- AC adapter included
- Yes
Physical Attributes
- Noise level
- 55 dB
- Housing material
- Metal
- Weight
- 22.00 lbs
- Weight
- 9.98 kg
- Length
- 16.00 in.
- Length
- 406 mm
- Width
- 10.00 in.
- Width
- 254 mm
- Depth/Height
- 11.20 in.
- Depth/Height
- 284 mm
Altitude
- Max operating altitude
- 9,843 ft
- Max operating altitude (m)
- 3,000 m
Operating Temp Range
- Operating temp min
- -35 ℃
- Operating temp min
- -31 ℉
Safety
- Overheat protection
- Yes
More specifications
- Warranty
- 1 Year
Features
Details from the onesaimei ONE-52 Amazon listing:
- Powerful 12kW Output & Extreme Cold Performance – This diesel heater delivers a maximum output of 12kW with an advanced glow plug for fast ignition. It quickly warms up in just minutes even at -35°C, with a heating efficiency of ≥95% and fuel consumption as low as 0.23–0.35L/h. The 7L large-capacity fuel tank supports all-night continuous heating, making it perfect for engine preheating, snow melting, and windshield de-icing in harsh winter conditions.
- Smart Multi-Control & Convenient Operation – Featuring a color LCD panel, this diesel heater supports remote control for easy operation from any angle. Choose auto temperature control mode (energy-saving) or 10-level manual heating mode (constant power), and use the programmable timer to precisely set preheating duration and scheduled heating. Start it in advance and enjoy cozy warmth in your RV, camping tent, or cabin.
- Quiet Operation & Stable Durability – Equipped with a high-quality muffler and silent fuel pump, this diesel heater runs at ≤55dB for a quiet, disturbance-free experience—ideal for RV camping and nighttime rest. The built-in smart thermostat system maintains constant temperature without fluctuation, and it operates reliably in areas below 3,000 meters, so performance is never limited by your environment.
- Versatile Compatibility & Portable Design, 12/24V DC + 110V AC Dual Power – With a metal housing and built-in 7L fuel tank, this diesel heater is easy to install and carry thanks to the metal handle. It works indoors and outdoors—RVs, cars, camping tents, boats, ice fishing, workshops, garages, greenhouses, shops, cellars, and more. It supports both 12/24V DC vehicle power and 110V AC power, so you can plug and play without extra accessories.
- Safety Protection & Easy Install & Storage – The automotive-style internally threaded fuel cap effectively prevents leaks on bumpy roads. The integrated smart protection system monitors overheating and sensor failures in real time and helps you troubleshoot quickly via fault codes. The kit includes full DIY installation accessories for easy setup even for beginners. The diesel heater comes with premium protective packaging and can be stored in the original box for direct reuse next winter—safe and durable.
Similar products from other brands
Chosen for their similar specs and price:
 This productonesaimei ONE-52 |
 VEVOR XMZ-TB20 |
 HCALORY HBH-3 |
 BougeRV DHG001 |
|
|---|---|---|---|---|
| Price | $118.00 | $145.90 | $129.99 | $219.99 |
| Model | ONE-52 | XMZ-TB20 | HBH-3 | DHG001 |
| Popular brand | No | – | – | – |
| Heater type | All-in-one | All-in-one | All-in-one portable | All-in-one |
| Max heat output (kW) | 12.0 | 8.0 | 8.0 | 5.0 |
| Max heat output (BTU/h) (BTU/h) | 40,946 | – | 27,297 | 17,061 |
| Heating area (m²) | – | – | 25 | – |
| Heating area (sq ft) | – | – | 269 | – |
| Fuel tank capacity (L) | – | 4.5 | 5.0 | 5.0 |
| Fuel tank capacity (gal) | – | 1.2 | 1.3 | 1.3 |
| Fuel consumption min (L/h) | 0.23 | 0.18 | 0.11 | 0.18 |
| Fuel consumption max (L/h) | 0.35 | 0.40 | 0.35 | 0.53 |
| Fuel consumption max (gal/h) | 0.092 | 0.106 | 0.090 | 0.140 |
| Max runtime per tank (hours) | – | – | 42 | 27 |
| Heat levels (levels) | 10 | 10 | 10 | – |
| Auto start/stop | – | – | Yes | – |
| Thermostat mode | Yes | Yes | Yes | – |
| Thermostat min (℉) | – | 46 | – | – |
| Thermostat max (℉) | – | 97 | – | – |
| Thermostat min (℃) | – | 8 | – | – |
| Thermostat max (℃) | – | 36 | – | – |
| Timer | Yes | Yes | Yes | Yes |
| Remote control included | – | Yes | Yes | Yes |
| Remote range (ft) | – | 98 | – | – |
| App connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| DC input voltage | 12V/24V | 12V/24V | 12V/24V | 12V |
| AC adapter included | Yes | Yes | Yes | – |
| Startup power draw (W) | – | – | – | 150 |
| Running power draw (W) | – | 40 | – | 60 |
| Noise level (dB) | 55 | 75 | – | 70 |
| Housing material | Metal | Metal | – | Metal |
| Hot air outlets (outlets) | – | 1 | – | – |
| Weight (lbs) | 22.00 | 19.80 | 22.70 | 22.00 |
| Weight (kg) | 9.98 | 8.95 | 10.30 | 10.00 |
| Length (in.) | 16.00 | 15.94 | 16.14 | 15.30 |
| Length (mm) | 406 | 405 | 410 | 389 |
| Width (in.) | 10.00 | 10.83 | 10.04 | 9.70 |
| Width (mm) | 254 | 275 | 255 | 246 |
| Depth/Height (in.) | 11.20 | 11.61 | 11.81 | 12.40 |
| Depth/Height (mm) | 284 | 295 | 300 | 315 |
| Max operating altitude (ft) | 9,843 | 9,843 | 16,400 | 9,843 |
| Max operating altitude (m) (m) | 3,000 | 3,000 | 5,000 | 3,000 |
| Altitude adjustment | – | – | Multi-level, 5 settings | – |
| Operating temp min (℃) | -35 | – | -40 | – |
| Operating temp min (℉) | -31 | – | -40 | – |
| CO alarm included | – | Yes | – | – |
| Overheat protection | Yes | Yes | – | Yes |
| Low-voltage protection | – | Yes | – | – |
| Certifications summary | – | FCC Part 15 Class B statement | – | – |
| FCC Part 15 compliant | – | Yes | – | – |
| Warranty | 1 Year | – | – | 2 Years |
Specifications last updated Oct 20, 2026.