With 18% higher combustion efficiency, saves fuel and costs less to operate. Warmth in just 3.5 minutes and reach 212°F in only 5 minutes. Includes a 1.5m extension cable for install the heater in vertical or horizontal position. Features dual-altitude mode, and automatic start-stop functions. Ideal for adventures & high-altitude journeys.
With 18% higher combustion efficiency, saves fuel and costs less to operate. 3 ways to control: HCALORY app, an optional remote, or the control panel. Features manual selection of dual-altitude mode, as well as automatic start and stop functions. Includes a 1.5m extension cable for installing the heater in either vertical or horizontal position.
Quick Warm-Up & Lower Cost
Experience noticeable warmth in just 3.5 minutes and reach 212°F in only 5 minutes. With 18% higher combustion efficiency, saves fuel and costs less to operate. Ideal for users who value both speed and economy.
Multi-Control Convenience
Operate heater your way: through the user-friendly HCALORY app, an optional remote, or the control panel. Set up to 3 separate timers, adjust heat from 1-10, or activate automatic start-stop—all tailored for real-world use.
High-Altitude Ready
Manually select 8202 ft/16400 ft (2500m/5000m) high-altitude mode to optimize air-fuel ratio for efficient performance in thinner air. This feature ensures steady and reliable heating across varied terrains.
Advanced Safety & Wide Heating
Equipped with multiple safety protections to prevent overheating and short circuits while delivering consistent and wide-ranging heat distribution for vans, RVs, and cabins.
Flexible Installation
Install the heater in vertical or horizontal position using the included extension cable (wire harness, 5ft/1.5m). This versatile design saves space and ensures accurate indoor temperature sensing for smarter automatic operation.
Model: HC1-U2
Model: HBU1S (HC1-U5)
Main engine *1
LCD Switch *1
Remote control *1
10L fuel tank *1
Intake/Exhaust pipe
Air Outlet pipe *1
Wire harness *1
Fixed Plate *1
Manual *1
Fixed cable
Tubing *1
Fixture Accessories set
Oil Filter *1
Oil Pump *1
Vents *1
Air Filter *1
T Connector *1
Oil Pump Clip *1
Exhaust Silencer *1
Just unboxed the HBU1S today. First impression: this thing feels solid. The housing looks way more durable than I expected. Haven't installed it yet, but everything in the box arrived in good shape.
Installed the HBU1S in my 30ft RV. The vertical/horizontal mounting option actually helped a lot since space is tight. It gets warm super quick and keeps the RV around 70°-75°F even when temps drop to the 40s at night.
Fuel efficiency is noticeably better than my old 5KW unit. The noise is just a steady hum-not silent, but not loud either.
The only con is the manual could be clearer, but the system itself works great once you get everything hooked up.
Packaging was great. Nothing was damaged in transit. The manual looks a little basic, but at least all the parts are clearly labeled. Haven’t used it yet.
Please click here to download the product manual.
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E-Mail an: hcalory@hcalory.com