The Aprilaire 600M 24V WholeHouse Humidifier is simple to install and features a builtin bypass damper with manual control. The damper of the Aprilaire 600M 24V WholeHouse Humidifier is labeled for both winter and summer making the setup of the unit a breeze. The Aprilaire 600M 24V WholeHouse Humidifier can provide added protection against common house problems such as static shock, chipping paint and plaster, splitting or cracked wood floors, furniture, trim and molding. The Aprilaire 600M 24V WholeHouse Humidifier can also help with health issues such as dry nose, cracked itchy skin, sore throats, aggravated allergies amp; asthma. The Aprilaire 600M 24V WholeHouse Humidifier is simply the best bypass humidifier on the market. The Aprilaire 600M 24V WholeHouse Humidifier includes the builtin bypass damper, 24 VAC transformer, manual humidifier control, saddle valve, one water panel and the humidifier control installation sheet.By evaporating up to 0.7 gallons of water per hour, yoursquo;ll never have to experience the discomfort of dry air again Best of all, the wide ranging effects of this device can reach all rooms in a tightly constructed home of up to 4,000 square feet If you are all about water conservation or live in an area where standing water can become a problem, donrsquo;t wait another day to get theAprilaire 600M 24V WholeHouse Humidifier. It not only recycles water cleanly into the air, but can help eliminate water where draining is not available.By maintaining a proper level of humidity you can improve your respiratory health, and avoid costly repairs on areas of your home that can be affected by dry weather (paint, molding, weather stripping, etc.). Keeping your Aprilaire humidifier maintained allows it to perform at optimal levels.Aprilaire 600M WholeHouse Humidifier does not require much maintenance at all. You should visually inspect the unit every 500 hours, more frequently during heavy use.