Wiring compatibility

[BRJ]

Looking to buy the Nest Learning thermostat to our HVAC system & also connect an AprilAire humidifier.  The online wiring compatibility check is very confusing.   Have pics of existing Honeywell thermostat 

[CoolingWizard]

@BRJ , Do you plan to install the Aprilaire humidifier yourself, The Nest Thermostat supports whole-home humidifiers and dehumidifiers that connect to it with one or two low voltage wires. There are multiple settings for the wire in the Star connector to control a humidifier or dehumidifier.

Whenever a dehumidifier is attached you’ll need to select whether or not the fan should activate or if the blower fan or only operate when the heater is on.  Regardless of whether your humidifier or dehumidifier has one wire or two, you will need to figure out if it can be activated on its own or if it requires heating or cooling to be on at the same time. You’ll also need to determine other settings, such as whether the fan is required during operation.

AC Cooling Wizard

[BRJ]

Thanks CW!  I tried doing the online compatibility check, took a pic of my current Honeywell thermostats wiring connections but wanted someone to look at to see if it will work. I can’t see a way to upload pics😩

[CoolingWizard]

@BRJ , before you can upload a picture here, you need to verify your email with this system.  Then just start a message  as tap the camera icon at the top.  

AC Cooling Wizard