Multi-mode auto changeover system

1. A thermostat device for a heating, ventilation and air conditioning system of a building, comprising:

a user interface; and

an auto changeover connected to the user interface, for switching from one mode to another mode according to the temperature of the space at a set amount of time relative to a time a temperature controlled space reaches a cool setpoint or heat setpoint, and having adjustable hystereses above and below the cool and heat setpoints, respectively; and

an emergency heat component having a button to activate emergency heat;

wherein:

the user interface displays a mode of the thermostat and automatically indicates a heat or cool mode that is in effect;

the auto changeover is always allowed; and

the auto changeover can be manually deactivated and activated;

when the emergency heat is activated, a system switch automatically changes the thermostat to heat and the auto changeover is automatically deactivated;

when the auto changeover is activated, the emergency heat is deactivated; and

when the system switch is changed to cool or off, the emergency heat is automatically deactivated.

2. The device of claim 1 , wherein:

the user interface has a provision for receiving one or more one touch actions;

a one touch action is a user defined set of operations carried out across one or more devices at a press of a button switch;

wherein the one or more touch actions comprise a one touch action of a button switch actuates multiple device specific actions and/or a one touch action of a button switch for control of the temperature of the space comprises setting a heat setpoint and a cool setpoint.

3. The device of claim 2 , wherein:

a one touch action is an automatic action;

an automatic action comprises a trigger to execute an action list, wherein the trigger is either true or false

when a trigger changes from false to true, then the action list is executed;

once the action list is executed, to execute the action list again, the rigger needs to change back to false and then to true; and

the action list comprises energizing a heating, ventilation and air conditioning (HVAC) piece of equipment.

4. The device of claim 3 , wherein:

said one touch action is an automatic action;

the automatic action comprises a specific action time; and

the action list comprises energizing a heating, ventilation and air conditioning (HVAC) piece of equipment.

5. The device of claim 4 , wherein the automatic action further requires an enable condition to be true to execute an automatic action.

6. The device of claim 2 , wherein:

said one touch action is an automatic action;

the automatic action comprises a time or trigger, and an optimal enable condition;

triggers and enable conditions are either true or false; and

a trigger is a temperature.

7. The device of claim 6 , wherein:

if a parameter of the automatic action is manually changed it overrides the automatic action.

8. The device of claim 7 , further comprising:

an action button for executing all automatic actions having triggers that have an evaluation of true; and

wherein the action button gives a user an ability to cancel overrides of triggers of automatic actions.

9. The device of claim 1 , wherein:

a setpoint is shown at the user interface when a mode is shown;

when a system switch is on a heat mode, the setpoint is a heat setpoint, and the heat setpoint can be modified by manually changing the setpoint shown;

when the system switch is on a cool mode, the setpoint is a cool setpoint, and the cool setpoint can be modified by manually changing the setpoint shown; and

when the system switch is at off, then no setpoint is shown and the heat setpoint or the cool setpoint cannot be manually changed.