VAVA VA-AH017 vs VA-AH015… this is a battle between two different types of humidifiers. On one hand, there’s the VAVA VA-AH017, a “top-fill” with a 4.3-liter water tank. On the other hand, there’s the VAVA VA-AH015, a “bottom-fill” with two nozzles. Which one of these VAVA humidifiers is for you? For the answer, you need …