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I have put 2 thermometers next to the ecobee 3 on the wall and separate rooms, (they remain constant with very little difference in temperature among them), and my set point differential set at .3 Celsius. I am getting from furnace fire on/off, not counting the high efficiency furnace blower time before shut down, a swing of over 2 Celsius of actual air temperature although the thermostat is reading 1 Celsius. Has anyone else actually measured the air temperature by the E3 as opposed to just trusting what the thermostat number tells you. Thanks