I have been using the Emerson whole house humidifier for about six years and it has really improved the air quality in our home. During the winter months, we often have fires in our Franklin stove to help heat the house. The dry heat from the fire place and furnace cause our house to become extremely dry. In the past, I have purchased the small room humidifiers to help add moisture to the air but they never seemed to help. Since we have been using the Emerson whole house humidifier we have had less sinus congestion and everyone is breathing easier. Output Volume I usually need to refill the humidifier with water every other day. We use the low setting and the humidifier does not constantly run but it is effective and adds much needed moisture to the air. Performance I have been highly satisfied with the Emerson humidifier and would recommend this product to anyone who has issues with dry air in their home. It truly has helped alleviate dry skin and congestion. Ease of Cleaning The Emerson humidifier is relatively easy to clean. I usually change the filter once a year and completely take the unit apart for a thorough cleaning several times a year.We have a water softener and it is easier to clean the humidifier with soft water. Durability We do not run the humidifier all year long but it is used heavily during the winter months. Other than changing the filter, the humidifier is pretty much maintenance free. It has lasted six years and seems to be working well.