I added a bypass humidifier to my forced air furnace. The control panel is mounted to the return duct, and the wiring runs from the panel into the furnace fan compartment.
Wires run from the water panel, from the control panel, and from the outdoor temp probe. I understand you don't generally have to protect/conduit 24V wire and all the originally existing thermostat wire is exposed (but neat). But while I tried to be neat and made most wire connections inside the furnace, it's kind of a mess with wires twisting how they like and 4-5ft of wire that runs along the side of the downflow return duct is totally unsecured.
How would the pros run it? I'm not a neat freak and I think I'm OK code-wise, but I'd like it to not look like a "homeowner special hack job".
In that same vein, what about securing the 1/2" vinyl drain tube? I can zip tie the end to the floor drain, but the tube wants to bend & twist, and it isn't neat at all right now.