The Good and Bad of Ceiling Fans

Posted by on Aug 15, 2013 in Air Conditioning Repair Albuquerque

The conventional ceiling fan heats up to about 100° F when running, including heat to a home. If no one is sitting or standing near the fan, leaving it on is senseless and disadvantageous.

Air Conditioning Repair Albuquerque

ceiling fan (Photo credit: Steve A Johnson)

I cannot count the variety of times I have actually walked past a neighbor’s house and seen the porch ceiling fans running with nobody there to appreciate them. All the fans are doing is losing electricity and contributing a little heat to the outdoor air. I am tempted (although I have actually never ever acted upon the impulse) to pull the chains and turn the fans off or leave the next-door neighbors a note.

Now, leaving porch fans on is not good, however nowhere near as bad as doing it indoors, particularly in the summertime. I am shocked at how couple of individuals understand the fundamental concept of fans – that they make you feel cool due to the motion of air throughout your skin. The exact same method a breeze cools you off, a ceiling fan can make you feel cooler, but just if you are close enough to it to feel the air blowing on you. If you cannot feel it, it is not doing any good.

Exactly what about circulating the air?

When Air Conditioning Repair Albuquerque  informs  individuals about this idea, many of them tell us that it helps distribute the air around the space and keeps your house more comfy. Sadly, most of them are wrong.

There are really few scenarios where relocating air around a home in the summer season like this improves convenience. If there takes place to be a huge temperature level difference in between the floor and ceiling due to poor air sealing and insulation, it could be beneficial to run a follower in reverse in the winter to bring warm air down, but that’s not what the majority of individuals are doing.

On an associated subject, I have actually been in homes where people are using their ceiling followers in the summer season but they are running in reverse, relocating air up rather of down. I when changed the follower direction for a pal and to his amazement, he actually felt cooler with the fan blowing to instead of far from him.

Ceiling fans increase energy use

A 1996 study in Florida identified that utilizing ceiling fans suitably can enable people to raise the temperature level inside by 2° F, resulting in about a 14 % yearly cooling energy savings.

The exact same research had that the majority of individuals do not adjust their thermostats when utilizing ceiling followers, actually enhancing their energy use as opposed to minimizing it.

Those fan motors are hot

Most individuals can comprehend that running a fan when no one is in the space loses electrical power, but the filthy little key is how much heat they put out when running.

I constantly knew this, but I was checking some really well developed cost effective LEED houses recently, and among my associates had an infrared camera with him. Scanning walls and ceilings revealed that the homes were effectively insulated and air sealed, but when the camera caught the running ceiling fan there was a big hot area at the motor. The temperature level of the motor was far higher than anything else in the room, including windows exposed to direct sunlight.

When the IR image was calibrated, we figured out that the fan motor was going for over 100° F. So not just is the fan not cooling individuals who are not in the room, it’s also working as a minor space heater– just things you need for a hot summer day.

There is hope

Now I am not suggesting that we need to not use ceiling followers– just that they need to not be on if nobody is in the space. If people only use them when needed and set their thermostat a bit greater, then the additional heat is a small rate to spend for the comfort and energy savings.

When choosing a ceiling fan, appearance at the efficiency of the follower, generally expressed in CFM per watt. The Energy Star website has a list of all labeled ceiling fans in a downloadable Excel spreadsheet that you can arrange by efficiency. The most efficient fan on the list is the Haiku by Big Ass Fans.

I handled to get an IR image of among the business’s fans also, and, lo and behold, the temperature level of the fan’s motor at high speed is only about 81° F. If (like me) you keep your residence in the high 70’s to reduced 80’s, a fan motor like this won’t make much of a distinction at all.

You don’t have to spend a fortune on a ceiling fan suggests Air Conditioning Repair Albuquerque. There are numerous reliable models that are fairly priced, and there is no reason to remove those that are working just fine. You should, nonetheless, just use them when they will keep you cool, and raise your thermostat when you do.

The following video gives some good tips!

Here is some information on cleaning ceiling fan blades too from, Dirty Job No. 4: Cleaning Ceiling-Fan Blades.

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