I assume from other posts that there is no way to put a switch heat to off event on the schedule. I strongly request that this be built into the app as I am absolutely amazed that the programmers didn't do it. Most manual controls have this facility!
I have been in the HVAC business for years, I have never seen a programmable thermostat that can be programed to completely shut off the system as an event. Typically systems are placed into and off state when a owner is going out of town. Most people set a low heat set point or in summer a high cools when they will be away for an extended time. Help me to understand the scenario in which you think and “event” should shut the thermostat to an system OFF state?
The Nest thermostat has a built in ECO Schedule and a built in Safety Schedule.
Ken, The AC Cooling Wizard
Thanks Ken, sorry for delay but been thinking and testing the new Nest, but ....
I suppose I'm a "dinosaur" but we have always switched out room heating to "off" when we went to bed, with the exception of a few years with particularly cold spells (we have a gentle climate). When we both worked, the heating was "off" during the middle of the day during the week as well. Technology didn't allow us to set different temperatures at different times. Having given it some thought, I accepted that we could set the thermostat to a lower temperature at night. However, I find that my Nest learning thermostat can only set the heating to maintain a temperature of 9degC (48degF) at the lowest. Last night the house temperature was 11deg C here and my wife commented she was hot in bed ! Does the ECO schedule allow a lower temperature than this. I read a note somewhere that the ECO temperature was "set on instillation". When ? Can it be changed ?
9deg C does not seem to be a very "Eco" temperature to me. We're bound to use more gas by leaving the heat in the "ON" state, even at 9 deg.
The programability of thermostats has never had a OFF status that can be set. The design thinking is when a consumer is away from the home, go to a energy efficiency set point and by default, 10°C on the low and 29°C for the high. The ECO settings are fixed set points. To prevent damage to the home or HVAC system, lowest ECO heat set point is 10°C. And, likewise in ECO cooling mode the highest set point is 29°C. The Nest thermostat can be manually set to as low as 9°C or as high as 32°C. There is of course the ability to manually TURN OFF the entire system too. Only it cannot be done within a schedule. In the days before programmable thermostats, homeowners would just move the Heat-Off-Cool switch to OFF. And simply turn it back on in the morning or when they returned home from work in the evening. Now along came the energy politicians and they they were convinced that if you completely turn off your system when you leave, the structure, ie., the walls and floors would all become equal to the ambient room temperature. They decided it would cost more energy to heat it all up again so they came up with minimum and maximum temperatures, and mandated systems achieve higher efficiencies and what the HVAC industry did is meet the objectives set government within then science of refrigeration standards. Summary, all equipment costs more and more.
Ken, The AC Cooling Wizard
It looks like we haven't heard back from the OP, so I'm going to lock the thread after 24 hours. @Mwpioneer, If you have any further questions or concerns, feel free to create a new post.