Winter is just around the corner, and I still have vivid memories of how cold it was last year. So this year, I’m getting a diesel air heater. The well-known and budget-friendly brand Hcalory recently launched two sleek, all-in-one parking heaters, the HBH2 and the HBS2. Hcalory HBH2 or HBS2? Facing these two similar models, I found myself struggling to make a choice.
To pick the best Hcalory diesel heater for my needs, I dug deep into the official information provided by the manufacturer and did a thorough comparison. To help all of you choose the right heater as well, I’m sharing my findings here. Let’s see which one is better: Hcalory HBH2 or HBS2.
Hcalory HBH2 or HBS2
Key Specs at a Glance
To help you make a clear choice, I’ve organized the core parameters for these two heaters. As the table shows, their main differences lie in fuel tank capacity and dimensions.
| Parameter | Hcalory HBH2 | Hcalory HBS2 |
| Dimensions | 43 x 41 x 29cm | 48 x 41 x 21cm |
| Voltage | 12V / 24V DC / 100~240V AC | 12V / 24V DC / 100~240V AC |
| Built-in Fuel Tank Capacity | 5L | 3.5L |
| Bluetooth APP Control | Yes | Yes |
| Remote Control | Yes | Yes |
| High-Altitude Mode Altitude Reference | 2500m/5000m | 2500m/5000m |
| Power | 5-8KW | 5-8KW |
| Material | Metal | Metal |
| Fuel Type | Diesel | Diesel |
| Fuel Consumption | 00.12 L/h – 0.45 L/h | 0.12 L/h – 0.45 L/h |
| Adapter | Included (100~240V) | Included (100~240V) |
Hcalory HBH2 vs HBS2: What are They Different?
Let’s dive into the key differences between these two heaters to help you make your final decision.
1. Installation and Portability
Hcalory claims that both diesel air heaters are “installation-free” all-in-one units, which is incredibly convenient for outdoor enthusiasts. The “installation-free” design means that the main heater, fuel pump, and fuel tank are all integrated into a single box. This saves us from the complicated steps of connecting fuel lines and wiring harnesses. All we need to do is connect the power and the intake/exhaust pipes, and it’s ready to use. This is so much simpler than traditional split-unit heaters.
According to the Hcalory diesel heater manual, the HBH2’s dimensions are 43 x 41 x 29cm, while the HBS2 measures 48 x 41 x 21cm. The more compact HBS2 is ideal for cars or RVs with limited space.
2. Fuel Capacity
The fuel consumption of these models is the same, but the fuel tank capacity is different. The fuel capacity Hcalory HBH2 is larger than HCS-H.
- HBH2: Features a large 5L built-in fuel tank. At the lowest fuel consumption rate of 0.12 L/h, it can theoretically run for over 41 hours. At the max mode, continuous heating time is 10.86 hours.
- HBS2: Comes with a 3.5L fuel tank. At the same minimum consumption rate of 0.12 L/h, it can run for nearly 29 hours. At the max mode, continuous heating time is 7.5 hours.
As an experienced overlander, I know that having to refuel frequently in the middle of the night is a huge hassle. The 5L tank on the HBH2 provides a massive “endurance safety net” and is perfect for continuous all-night heating.
3. Smart Control
Both models support three control methods: the Hcalory heater app, a remote control, and an LCD panel. Functionally, they are identical. You can comfortably adjust the temperature of your sleeping bag using your phone, which is extremely convenient.
Based on reviews, both models provide a powerful 5-8KW of heat, thus both of them can quickly make an RV, tent, or truck cabin warm. With high power output and dual high-altitude modes, both models perform equally well in heating efficiency and stability.
Which is the Winner: Hcalory HBH2 or HBS2?
| Aspect | Hcalory HBH2 | Hcalory HBS2 | Conclusion |
| Endurance | Winner | / | The 5L tank of the HBH2 provides longer run time, suitable for extended trips. |
| Portability | / | Winner | The HBS2 is flatter and more suitable for storage in limited vehicle space. |
| Smart Control | Tie | Tie | The functions are completely identical and don’t affect the choice. |
| Heating Performance | Tie | Tie | The core technology is the same, so the heating effect is identical. |
Which is Your Best Diesel Aire Heater: Hcalory HBH2 or HBS2?
- If you’re a “light camper”, only use the heater for daily commuting and have limited storage space, the HBS2 is your best bet. Its more compact body and sufficient endurance make it a great value.
- If you’re a “hardcore road tripper” or love to go on winter camping trips, you will need a long-lasting heating solution. The HBH2’s 5L large fuel tank is your ultimate tool.
I hope this post will help you clearly understand the differences between these two Hcalory heaters. So, have you made a decision? Which one would you choose, Hcalory HBH2 or HBS2? Welcome to show your final decision in the comments.
Learn more:
Diesel Heater: How to Choose
Hcalory HBH2 Review
Hcalory HBS2 Diesel Heater Review
