Product review (5 stars): Helps prevent calcium deposits
We have forced hot air heating which tends to dry out the air in the winter.  Without Venta aiwasher I wake up with a sore throat due to dryness, with Venta airwasher my throat feels fine. I use tap water in the airwasher and we have hard water from a well. I use water treatment as it was recommended for the proper running of the humidifier to prevent formation of calcium deposits on the walls and in the turbines. I see sediment on the bottom of the tank and rinse it every 2 weeks. For cleaning of the tank I use Simple Green cleaner (one gallon concentrated solution is pretty economical).

One thing I was not sure about before I got the big 35 oz bottle of the solution for the first time is how I was going to measure out the right amount of the solution for each application.  Once I got the bottle I saw that the label has lines that show the amount to use each time. Each dose is 3.4 oz and should be added to water every 10 to 14 days. There are 11 doses according to the marking, which works out to about 6 months. If you humidify for less than 6 months a year the bottle can last more than one season. However the shelf life of the product is marked this way: storage life is 30 months if not opened, and 12 months after opening.  I am not sure 12 months a real shelf like or is Venta trying to make an annual sale to each customer.

Note that this water treatment is not a replacement for Venta Airwasher Cleaner (8.5 oz) which needs to be used once a year before I store the unit for the summer when we don't use it.

 Venta airwasher water treatment contains: water, quatemary ammonium chlorides and water softening agent.

Ali Julia review