Abstract: An audible interactive and programmable heating and cooling digital thermostat providing voice setup instructions for easy and precise temperature management during four different time periods in a twenty-four hour day and the option of distinct weekday and weekend programming temperature setpoints. The audible interactive thermostat includes an alerting means including a visual display device and/or a verbal announcing device to alert a user of current status of programmable time and temperature parameters, to alert a user of different choices within the time and temperature parameters and/or to alert a user of chosen parameters selected from the group including: current status of selectable functions, ambient conditions, programming status and/or response to activation of a triggering means.

Abstract: An audible interactive and programmable heating and cooling digital thermostat providing voice setup instructions for easy and precise temperature management during four different time periods in a twenty-four hour day and the option of distinct weekday and weekend programming temperature setpoints. The audible interactive thermostat includes an alerting means including a visual display device and/or a verbal announcing device to alert a user of current status of programmable time and temperature parameters, to alert a user of different choices within the time and temperature parameters and/or to alert a user of chosen parameters selected from the group including: current status of selectable functions, ambient conditions, programming status and/or response to activation of a triggering means.

Abstract: An electronic HVAC monitoring computer continuously monitors the general condition and efficiency of an HVAC system and notifies a central station computer via modem link or other signal transmission means, when the general condition or efficiency of the HVAC system falls below certain industry standard values by a pre-set amount.