Follow up call from tuneup. Found bypass humidifier housing with hairline crack causing water leak during operation. Homeowner has had multiple water issues with this unit. Recommend upgrading to whole home steam humidifier for platinum tier humidification or replacing bypass with new bypass humidifier versus replacing just the housing. System is now on a softened water line which will help buildup in the future. Www.airscrubberbyaerus.com for benefits of whole home air scrubber No charge for today's visit.