When you’re hot, you turn the ceiling fan on and start to feel cool again – right? Well, one could surmise based off of those facts that leaving the fan running after you’ve left the room will keep the room cool for your return – right? Well – unfortunately, you’re wrong.
Leaving a ceiling fan on while you are not in a room will NOT help keep it cool. The facts: Ceiling fans cool people, not rooms. What? Yes. Unlike air conditioning units, fans are simply recirculating air and creating air flow – that light breeze that we feel cools us down, but it doesn’t actually change the temp of the air in the room! Save energy by turning off the air conditioner and turning on the ceiling fan while you are in a room…but keep both the fan and AC off when you leave.
So save yourself a few bucks and turn off the power to all fans before leaving the room – and remember as well, when you do use the fan, “during the summer, you’ll want the fan to blow air straight down, so your ceiling fan needs to run in a counter clockwise direction (as you look up at it). The warmer it is, the higher the speed should be.”