When I first installed this, I noted that the blower and he furnace started at the same time, which my old thermostat did not. It worked in stages. I contacted Sensei tech support and they gave me the correct programming to make it work so the furnace fires to heat the plenum, then when it reaches right temp, the blower starts so it is not blowing all the cold air directly in to the house from the ducts. Will be a big savings in fuel costs.Thank you for contacting Sensi Technical Support. Based on the information you provided, the thermostat could be configured incorrectly. First, let’s make sure the thermostat is configured correctly for your equipment:• Go to the physical thermostat.• Press “Menu.”• Press "Advanced Set Up."• Press “Set Up HVAC Equipment.”• Press “Change settings.”• If you have a heat pump, choose “HP1.” If you have an air conditioning unit, choose "AC1.” If you have more than one stage cooling, change this to “HP2” or “AC2” to represent this.o If you have a wire in Y, but not Y2, you have single stage.o If you have a wire in Y and Y2, you have more than one stage of cooling.• If you have a gas furnace, oil burner, or boiler system, choose "GA1" which represents a single stage gas/boiler heating system. If you have an electric furnace, this should be set to "EL1." If you have more than one stage, change this to "GA2" or "EL2” to represent this.o If you have a wire in W/E, but not W2, you have single stage.o If you have a wire in W/E and W2, you have more than one stage of heating.• Once you've selected the choice that best describes your equipment, press “Save” to leave the menu.If it does not solve your issue, please give our Sensi Technical Support team a call at 1-888-605-7131, 7:00am – 7:00pm CST, Monday-Friday, and 8:00am – 5:00pm CST, Saturday-Sunday. Thank you again, and have a great day!The internet connection does work. I was able to preheat the house as I was returning form North Carolina after a cold snap. Oh what a nice feature! Can't wait for the summer with AC getting home from work.Sensei also sends me a report of heating/cooling every month so I can see furnace utilization and average temp/humidity of house.