> Humidifying only 600 square feet, the size of a studio apartment, takes about 5 gallons of water per day in winter. This heavily depends on the ventilation a

> Humidifying only 600 square feet, the size of a studio apartment, takes about 5 gallons of water per day in winter. This heavily depends on the ventilation as well. With ERV HVAC[1] it is much easier to keep higher humidity level as some of the moisture is reintroduced in the heat exchanger. [1] https://en.wikipedia.org/wiki/Energy_recovery_ventilation https://en.wikipedia.org/wiki/Energy_recovery_ventilation