On winter mornings, your engine struggles to run due to the freezing temperatures. You certainly don’t want to leave early to wait for your engine to warm up. With Hcalory WH-A, a diesel water heater, you will meet the cold-start struggle no more, as it provides rapid engine preheating and instant cabin warmth. It will ensure your car is ready to go comfortably and reliably, even in the harshest environments. The WH-A delivers powerful, efficient, and reliable heating regardless of the climate, preserving your fuel and protecting your battery health.
Scroll down to learn more about HCALORY WH-A diesel water heater 12v.
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Unmatched Heating Power and Efficiency
The WH-A stands out for its high performance. It features a robust 6KW rated heat output, ensuring incredibly fast coolant heating and quick delivery of warmth to both the engine and the cabin. What’s more, this power is delivered with exceptional efficiency. The WH-A consumes only 0.46 L/h on diesel or 0.52 L/h on gasoline. This ultra-low fuel consumption translates directly into significant operational savings over time. Furthermore, it is dual-fuel compatible, so it works whether your vehicle runs on diesel or gasoline.

Run on Extreme Environment
With the excellent design, Hcalory WH-A starts and continues operation in ambient temperatures ranging from a punishing −41℃ up to +50 ℃. There are two versions: the Standard Version, capable up to 3,000m, and the full-altitude adaptive version, reliable up to 5,800m. With rugged adaptability, you can travel confidently without worrying about weather or altitude conditions.
Smart and Battery-Safe Power Management
Concerned about battery drain? The Hcalory WH-A is on minimal power. It draws a mere 36W during continuous operation, peaking at 120W at startup. This low power draw operates safely within a 10.5V−15V range, effectively protecting your vehicle’s battery from depletion. For extended use, an optional low-power mode can be activated to provide further fuel savings and maximize runtime.
Easy to Control
Managing the Hcalory WH-A is straightforward thanks to the 2.8-inch backlit LCD control panel (320×240). This screen clearly displays real-time operational data. You can read clearly whether it’s day or night. Besides, with an LCD switch and a remote control, you can start pre-heating your vehicle remotely from the comfort of indoors. What’s more, you can adjust modes and set specific operational timers easily.


Built-in Safety and All-Season Reliability
The Hcalory WH-A diesel water heater incorporates built-in sensors for overheat protection, preventing dry burning and automatically shutting down the unit if necessary. For year-round operation, this diesel water heater is designed for safe use with any standard water-antifreeze mixes supporting an antifreeze content range from a minimum of 10% to a maximum of 50%.
Wide Range of Applications
As it operates during the voltage range from DC 10.5V to DC 15V, Hcalory WH-A can be used for multiple vehicles, like minivans, multi-purpose vehicles, electric vehicles, and more. After installing the WH-A water heater, It will be highly effective for windshield defrosting, enabling low-temperature engine starts, and providing heating for generator sets.

HCALORY WH-A Diesel Water Heater Specifications
Let’s recap the key specification.
| Spezifikation | Detail |
| Rated Heat Output | 6KW |
| Kraftstoffverbrauch | Diesel 0.46 L/H Gasoline 0.52 L/H |
| Betriebsspannung | DC 10.5V−15V |
| Power Consumption (Op./Start) | 36W/120W |
| Betriebstemperatur | −41∘C to 50∘C |
| Höhenmodus-Referenz | Standard ≤3000m / Full-Altitude ≤5800m |
| Steuerungstypen | LCD Switch and Remote Control |
| Preis | Überprüfen |
Stop wasting time and fuel waiting for your vehicle to warm up. With the Hcalory WH-A water heater, you will have to bear the cold no more. Secure your comfort and protect your engine now. Click here to order the Hcalory WH-A Water Heater today!




