[Onesidezero]

Installed a nest thermostat recently, but there is no wire that resembles a connection to the humidifier. Is it possible that the humidifier is just set to run when the heat is on? It hasn't turned on since I've installed the Nest...

 

[wahoo]

We are forbidden to attempt to assist with DIY attempts by homeowners. If you used a professional then call them back, if you've actually attempted this yourself, then call NEST. Sorry

 

[rider77]

I don't think the Nest can control a humidifier. It's one of many things those crappy thermostats can't do for the money they charge to buy them.

 

[HVAC_Marc]

Nest cannot control your humidifier. It can hardly control itself.

 

[Onesidezero]

I guess I should rephrase my question. Even with the old thermostat, there was no H, HUM wire etc., that seemed to be a connection for a humidifier. In that case, how did the humidifier know when to operate? Are most set to operate automatically when the furnace runs and turn off otherwise?

 

[rider77]

No, the humidifier needs to operate based on indoor humidity. Not just whenever the furnace runs.

 

[HVAC_Marc]

Most have a humidistat mounted on the furnace duct system some place.

 

[pacnw]

Most stats DON'T have humidifier terminals.

 

[Onesidezero]

Gotcha. That's what I was wondering. Thanks!

 

[ziggyhere]

This is off their website:

The 3rd generation Nest Learning Thermostat can control:
Heating: up to three stages
Cooling: up to two stages
Heat pumps with auxiliary and emergency heat
Fans
Humidifiers
Dehumidifiers

 

[HVAC_Marc]

This is off their website:

The 3rd generation Nest Learning Thermostat can control:
Heating: up to three stages
Cooling: up to two stages
Heat pumps with auxiliary and emergency heat
Fans
Humidifiers
Dehumidifiers

:D: :D: :D:

 

[pacnw]

This is off their website:

The 3rd generation Nest Learning Thermostat can control:
Heating: up to three stages
Cooling: up to two stages
Heat pumps with auxiliary and emergency heat
Fans
Humidifiers
Dehumidifiers

So then the OP should contact NEST tech support.

 

[kangaroogod]

I have gen 2 controlling my humidifier. It is not the greatest control as you cannot set an actual humidity. As noted call nest and it is likely not a diy setup as adding a relay and control wiring is almost always necessary

Sent from my SM-N920V using Tapatalk

 

[Onesidezero]

Ok good to know. I'll get ahold of an hvac professional and have them look into it. I appreciate your help