Gewna 8KW All-in-One Diesel Air Heater vs Rvchic 8KW Diesel Air Heater

Both are 8 kW all-in-one diesel air heaters with remote and LCD control, and both claim 45 dB and 16 hours per tank. The Gewna is the safer pick for most buyers: it lists 12V/24V/110V/240V support, so one unit covers a truck, a van and a 240V bench setup, and it carries an explicit CO exhaust warning. The Rvchic lists a larger 9L tank and a stated 269 sq ft room size, but its own specs contradict each other on tank size and voltage, and it has no written warranty or NRTL listing. Neither is a premium unit; expect similar build and similar owner reports of noisy pumps and carbon buildup over time.

• Choose the Gewna if you need one heater that works across 12V, 24V and mains voltages, or you want the manufacturer to state the outdoor exhaust requirement plainly.
• Choose the Rvchic if a bigger tank matters more than voltage flexibility and you are comfortable checking the unit's actual voltage and tank size before install.