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When I turn my thermostat down to a lower temperature, instead of the fan shutting off until that lower temperature is reached, and then the heat turning back on, my thermostat just continually blows cooler air. So my HVAC constantly either blows warm air or cold air.
My utility bill doesn't seem any higher, but this just doesn't seem normal. Most other places, changing the temperature makes the air stop blowing until the home temperature is below the chosen temperature.
My fan has a manual switch ON the thermostat - but having said that I keep that switch turned ON all the time; if it were turned off, the fan cycles on and off with a slight hysteresis as needed by the current AC - either heat or cold (or neither).
Yes, only when the heat is turned down. A couple of nights ago it was extremely hot in the middle of the night. We turned the thermostat down, but the fan never stopped, it just started blowing cooler air to cool down the house. It is an older thermostat with the options of "Fan" and "Auto on". It's currently set to Auto on.
From my recollection if you turned the temperature down, the fan would stop, the house would cool down, and then the heat would turn on to regulate the temperature.
That is what ours is, too - and we keep it set to "Fan".
Other than power outages (really rare in our neighborhood) and filter changes, that fan has been ON for about 10 years now.
A continous fan operation can be desirable in cooling for the air motion but don't you feel a draft in heating season? I've never heard of anyone operating their fan like that.
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