How to Install AprilAire 500M Whole House Humidifier

This video covers a detailed install of the AprilAire 500M Whole House humidifier by a DIYer, including a tour of the installation package, cutting holes in the furnace and return, running plumbing lines for hot water and drain, and wiring up everything. I hope the lessons I learned help others! AprilAire 500M Whole House humidifier with install kit: https://amzn.to/4iWmYnC 00:00 Install Steps Summary 01:45 Tour of Installation Kit Components 03:00 Deciding Installation Location on Furnace 03:50 Flipping Orientation of Panel 07:04 Cutting Hole in Furnace 10:30 Mounting Main Humidifier Unit 11:04 Cutting Hole in Return for Duct 12:05 Installing Duct Hose between Supply & Return 13:00 Vacuuming Debris from Furnace / AC Coils 13:38 Installing Water Panel 14:40 Installing Needle Valve on Hot Water Pipe 16:04 Installing Hot Water Tubing 18:02 Installing Drain Line 18:51 Finish Installing Flexible Duct 19:53 Wiring Diagram Explanation 20:59 Humidistat Installation in Return 22:59 Wiring in Humidistat 23:29 Wiring Furnace to Solenoid & Humidistat 24:47 First Power On 25:24 Reinstall Cover & Testing 26:17 Humidistat Recommendations for Super Cold Weather