Overview
When Mode is set to Auto Heat/Cool, Flair will intelligently switch between heating and cooling. This is often called autochangeover.
Flair's mode switching feature can be used with the following types of systems:
- Systems with mini splits
- Systems with integrated smart thermostat(s) with Flair as the Set Point Controller
- Systems with mini splits and integrated smart thermostat(s) using Flair as the Set Point Controller
Note: Flair does not use the Auto Heat/Cool mode on a smart thermostat. Flair will set a smart thermostat to either Heat or Cool mode.
Mode switching is not available for these types of systems:
- Systems using Mirror Mode: Flair follows the mode and set points read from the thermostat
- Systems with a non-integrated thermostat: Flair will use the duct temperature to determine if the system is in heat or cool mode
- Systems with an integrated smart thermostat with the thermostat as the Set Point Controller: Flair follows the mode and set points read from the thermostat
Pro tip: the auto changeover differential is 3F. This value can be adjusted by contacting Support.
Single Set Point
While some thermostats have two set points for Auto Heat/Cool mode ("heat-to" and "cool-to"), Flair uses a single set point paradigm.
When Mode is set to "Auto Heat/Cool", Flair creates a 3F range around the home set point for switching between heating and cooling.
To determine when to switch between heating and cooling, Flair will compare the average home temperature of Active rooms to the average set points of Active rooms (this includes rooms with holds).
So...
Flair will switch to heat mode when:
The average home temperature of Active rooms drops 3F below the average home set point of Active rooms
Flair will switch to cool mode when:
The average home temperature of Active rooms rises 3F above the average home set point of Active rooms.
Note: Flair does not use Inactive rooms for determining when to switch between heating and cooling.
Example
Let's say the average home set point of Active rooms is 72F.
Flair will switch the mode to heat when:
The average home temperature of Active rooms drops below 69F
Flair wills switch the mode to cool when:
The average home temperature of Active rooms rises above 75F
Adjusting when mode switching occurs
The Heat Cool Mode Hysteresis is used for calculating modes switching:
- Heat Cool Mode Hysteresis: the default value is 3F. This determines how Flair calculates the heat to and cool to set points. Closer heating and cooling set pints will maintain tighter temperature control and use more energy. Set points further apart will result in a wider temperature range and use less energy.
This value is adjustable by contacting Support: flair.co/contact