Best Humidifier Ever

In the 20 years of using humidifiers, the Air-O-Swiss 7133 is the best we've ever used.

After our Hunter Care-Free Humidifier rusted and the motor seized up after 1.5 seasons of use, we researched and decided to go back to the ultrasonic type. The Hunter was loud and very difficult to clean. The Air-O-Swiss solves the two problems we've experienced with previous ultrasonic humidifiers: No more white dust, and no more mineral build-up inside the unit.

The instructions say to soak the demineralization cartridge for 24 hours before first use, and we did that. And we also placed the silver ionic stick in the basin. And in 2 months of almost continuous winter use, we've never had a problem with white dust. And except for rinsing out the unit now and then, this humidifier is the most care-free humidifier we've ever owned. No more scraping off the scaly mineral build up. And no white dust.

We keep the unit on a TV tray about 29” above the carpet floor. We have forced air heat, and our bedroom is about 250 sq.ft. Based on the measurements of a separate hygrometer in the room, we can get the relative humidity up to about 65% with all settings on full and the door closed, but we aim for about 50% relative humidity which the Air-O-Swiss maintains easily. We tried using the Air-O-Swiss in a larger room (about 400 sq.ft.) and it struggled to raise the humidity above 45%.

What’s also nice is putting the heat on to warm up the mist. This was especially nice when we both had colds. Plus the room feels warmer with the warm moist air. Because it’s an ultrasonic humidifier as opposed to the Hunter which was an evaporative humidifier, the Air-O-Swiss is MUCH quieter. No more loud fans. And the Hunter drew air in through its plastic grill which collected dust and was extremely difficult to clean. And the Air-O-Swiss is simple and easy to keep clean. If this Air-O-Swiss lasts 3 seasons, that it will end up costing the same as the other that only last 1.5 seasons. Time will tell.