The thermostat fan can be controlled by using the website or app and setting the fan to Auto, 1 hour, 2 hours, 3 hours, 24 hours, Indefinite, or Circulate. The fan options depend on the thermostat model and configurations. 

The fan can also be controlled using schedules.

Note: Any direct control on the website or app will override the current fan schedule until the next schedule begins.  

To control the fan using the website: 

1. Log into the website. 
2. In the thermostat card, click  and then click select the desired fan option. 

To control the fan using the app: 

1. Log into the app. 
2. Tap . 
3. Tap to select Thermostats in the menu.
4. Tap Fan.
5. Tap to select the desired fan option, then tap Select.

Frequently asked questions

How does each fan option operate the fan?

Auto 

Auto mode automatically operates the fan as needed by the HVAC system. 

Number of hours 

When a specified number of hours is selected (i.e., 1, 2, 3, 24 hours), the fan stays on for the allotted time frame and then reverts to Auto mode. 

Indefinite or On 

This fan option allows the fan to stay on indefinitely. For Indefinite or On to appear as a fan option, Enable fan ON mode must be enabled in the thermostat settings (if available). If you are not seeing this option, contact your service provider. 

Circulate 

The Circulate fan option is controlled by the thermostat’s Fan Circulation/Duty Cycle settings. The Fan Duty Cycle determines how long the fan is on during the Fan Circulation Period. For example, if the circulation time is 10 minutes and the duty cycle is 25%, the fan is on for 2.5 minutes and then off for 7.5 minutes until the next cycle. This option increases the air quality without constantly running the fan. 

For the Alarm.com Smart Thermostat: 

• The default Fan Circulation Period is 10 minutes. This is the amount of time the fan is in circulation.
• The default Fan Duty Cycle is 25%. This is the percentage of the circulation time period the fan is on.

For more information about your thermostat’s fan settings, contact your service provider. 

Why is there no Off option included in the fan controls?  

This is to safeguard against shutting off the fan while the heat or cooling is running. Without circulation, the system would be damaged.

Can low and high fan settings be controlled from Alarm.com?  

No. Low and high fan settings are not controllable from Alarm.com.