Derek ColeGM, Simmons One Hour Heating & Air · AI HVAC Answers

Leave HVAC unit FAN ON or Ceiling Fan

4 Mar 2019 · 1 min

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0:58

Advice from a speaker addressing whether to leave fans on in homes, focused on southeastern North Carolina. The speaker warns against leaving HVAC or ceiling fans running in humid climates because that can raise indoor humidity; recommends maintaining indoor humidity between 30–50%; emphasizes that air conditioning primarily removes moisture and that ceiling fans cool people (wind‑chill effect) rather than rooms.

Questions this video answers

30–50%.

Southeastern North Carolina (humid climate).

Chapters

In this part of the country you should never leave your fan on. Now in the northern climates where it's dry they keep the fans on. But this is southeastern North Carolina. You don't do it because then you have humidity problem. Your indoor humidity should be between 30 and 50%. And the main part of air conditioning is removing moisture from the house. So you don't want to add moisture by leaving your fans on. Ceiling fans, a good thing to remember about those, they're not going to cool the room off. If the room is sitting there with a fan on, you're doing no good. Fans cool people, not rooms. Fans give you a wind chill effect. That's what cools you down. So it's kind of like a 70 degree day where the sun shining no wind or 70 degree day where it's a little shady and you got 15 mile an hour wind. Which one is cooler was the one with the wind.