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Topic: Do Ceiling Fans Really Save Up To 40% On Your Energy Bill?
Maybe...and Maybe NOT...You better read the fine print!
A study published by the California Measurement Advisory Council was done to determine the Ceiling Fan usage habits of California residents in 2002.
When asked if they raised their thermostat when they turned on their ceiling fans only 2% reported that they always did.
17% said they did sometimes, 72% said they never do and 6% had no response.
Experience has taught me that when the words "UP TO" are used in front of any claim, I'd better look for the fine print and read the disclaimer.
When an ad for a retail product says "Up To 50% OFF" I can be relatively confident that the item I want is more like 10% OFF...if it is discounted at all.
The same holds true for the statement that "Ceiling fans can save you [up to] 40% on your cooling bills". Although it is quite possible, after reading the
survey results above, it is not likely to be realized by most people...except for those who read this entire article which holds the golden keys to unlock these
Golden Key #1: "The more you raise your thermostat, the less you will spend on your cooling bills."
Common Mistake: "If you run your ceiling fans and air conditioner at the same time and DO NOT raise your thermostat, you will save nothing. As a matter of fact, you will end up spending more money because you will be adding the cost of operating your ceiling fans onto the cost of running your air conditioner!"
Here is a video that supports this concept, provided by AEP TEXAS - An CO-OP Utililty Company
Ceiling fans can cut your air conditioning costs by creating a wind
chill effect. Most people can raise their thermostat in the summer and feel just as comfortable.
For every degree you raise the air conditioning thermostat above 78 degrees you can save 3 percent to 5 percent on cooling costs.
However you won't save it all if you use a ceiling fan do not raise the air conditioning thermostat or if you leave the fan on when you leave the room. Remember, fans cool people not rooms.
Key to a different door: If you rarely ever use your air conditioning or you simply do not have an air conditioner,
then using ceiling fans will not save you any money, although they are a very inexpensive way to make you feel cooler.
Golden Key #2: In order to acheive maximum savings with ceiling fans you need energy efficient ceiling fans with powerful high performance motors capable of moving
enough air to keep you comfortable enough to raise your thermostat by about 10 degrees or not use your air conditioner at all.
The more powerful and efficient your ceiling fans are, the more you will be able to raise your thermostat without sacrificing too much of your comfort level.
Golden Key #3: You need to turn off your ceiling fans when you are not in the room.
Ceiling fans cool you off by creating a wind chill effect, they do not necessarily change the air temperature (read exceptions below).
Therefore, If you are not in the room where the ceiling fan is running, you will not feel the wind chill effect and you will have not cooling benefit,
so it makes sense to turn your fan off when you leave the room in order to conserve energy.
Exceptions to Golden Key #3
Ceiling fans can also be used to destratisfy the air. Since hot air rises, the air in a room is usually cooler towards the floor and warmer at the ceiling.
Destratisfying the air is often accomplished during the winter in rooms with high ceilings where a ceiling fan is run in reverse to draw the cool air up from the floor and force the warm air down from the ceiling.
This helps mix up the air to even out the overall room temperature. The same thing can be accomplished in the summer if you have rooms upstairs that tend to be warmer than those downstairs.
If you place a ceiling fan in the stairwell and run it in reverse, it will draw cool air from downstairs to the upstairs.
An additional exception to this rule is that leaving your ceiling fans on throughout the house while windows are open can actually help draw fresh air in from outside,
which can help keep your home from being "Stuffy". This also works if the air temperature outside your home is cooler than the air temperature inside...kind of like destratisfying the air between indoors and outdoors.
In this case, I am assuming that you are not operating air conditioning because you would not want to have your windows open.
There are other factors to consider when it comes to maximizing the energy savings you get from ceiling fans:
How often do you use your air conditioner (if you even have one)?
How much does it cost to operate your air conditioner?
What temperature do you normally have your thermostat set at?
How well is your home insulated?
How high are your ceilings
Are your air conditing registers at floor or ceiling level?
Do you get a lot of sunlight in your home?
How hot does it get in your climate?
How many rooms are there in your home?
Is your home a single story home or multiple floors?
Do you spend most of your time in one room?
Do you have high performance energy efficient ceiling fans?
Do you have ceiling fans in each room?
As you can see, there are many factors that need to be considered in order to determine how effective using ceiling fans will be for any given application.
Every situation is different. I am confident there are a few engeneers who could perform a heat calc in your home and come up with some type of formula
to calculate the estimated annual savings given various scenerios of your usage habbits and local climate, but I think you get the point.
So, the best you can do is simply raise your thermostat and install ceiling fans that move the most air using the least amount of electricity.
Emerson has just introduced a ceiling fan that is over 300% more efficient than other fans. This new fan represents a breakthrough in ceiling fan technology and performance and has the potential to revolutionize the entire ceiling fan industry.
Research shows that using ceiling fans can actually increase your cooling bills
Okay, that sounds contradictory to what everyone else is saying about ceiling fans. And what does that have to do with this new Emerson fan that is supposed to revolutionize the ceiling fan industry. Well, before I can tell you how that will take place, I need to put a rest to some misnomers that are going around regarding how using ceiling fans can save you a boat load of money.
As a ceiling fan retailer, over the years I've run across many ads making the claim that ceiling fans can save up to 40% on your cooling bills. I've even run such ads myself...and to this day, we promote this very idea on our ceiling fan website. Although the statement is true, apparently there is some fine print that needs to be made bolder in order for most consumers to realize such savings.
A study done by the IOU (California Investor Owned Utilities http://www.calmac.org.newpubs.asp/) shows that in most cases the savings are dramatically less and that in some cases they are negative. There are several factors that contribute to the lack of savings achieved, but the most significant being that most consumers simply do not raise the thermostat on their air conditioner enough to make a difference. The first rule of thumb when trying to save money with ceiling fans is to raise your thermostat by 5 or 10 degrees. For maximum savings, you would not use your air conditioner at all.
So what the study found is that not only do some people seem to run their ceiling fans and air conditioner at the same time without lowering the thermostat, they also tend to leave their ceiling fans on all day...even if they are not in the room where the fan(s) are.
Now if you have a home with 5 or 6 ceiling fans in it and you leave them on all the time, you are getting no benefit from those fans and just adding to your energy consumption. If on the other hand, you only use a ceiling fan in the room which you are in and turn your air conditioner off or raise the thermostat by 10 degrees, you can in fact save substantially on your cooling costs.
Choosing the right ceiling fans will have more impact on your energy savings
So, the idea that you can feel just as comfortable in a room with a ceiling fan if you raise your thermostat by 10 degrees is hogwash in many cases. The amount of comfort you are going to get from any ceiling fan is directly proportional to the CFMs that the ceiling fan generates (Cubic Feet of Air moved per Minute) amount of air that the fan in question generates.
US Government EPA Ceiling Fan Website.
You can find the spreadsheet on that page. Even more, you will find a picture of the Emerson Eco on that page as well...even though the Government is not allowed to sponsor or promote any particular brand or model.
Everything you need to know about ceiling fans and more. If you have a question about ceiling fans that you cannot find in these resources give us a call at: 1-800-201-1193 or send an email to our webmaster: email@example.com
QUESTION: I am looking at the Emerson Carrera Grande Eco 72 (DC Motor) Ceiling Fan Model CF788VNB, however regarding fan blades for an outdoor-damp location, would these blades tend to warp over a few years in a humid environment? I have had many outdoor fans, and they almost all end up with warped blades over time. Do you offer blades that would be less prone to warping, or are these already "resistant"?
ANSWER: When you click on the orange button for blades, look for blades that say "(Outdoor Damp)". Emerson specially makes the damp rated blades from solid hardwood (instead of cheap plywood) that is treated to resist cracking and warping from being outside. They will hold up much better than what you have experienced and are in fact rated for use in outdoor damp locations by the manufacturer.
QUESTION: I just bought a house with a Halsey ceiling fan and I want to add a light to it. The universal light kit only works sometimes! Where can I find Halsey light kits to fit models HC-HP and HG models?
ANSWER: I am sorry to report that Halsey went out of business several years ago, so finding parts for them is difficult. It is not a brand that we ever sold, so we would not have any fixtures on hand that were made by them. If you email me some pictures of your fan, I may be able to determine what types of universal fixtures will fit...if any. Email pictures to: firstname.lastname@example.org
QUESTION: The location I am considering was wired only for a light and no fan (1 wire pair). How do I tell which lights are compatible and which are not?
ANSWER: Almost all of our ceiling fans with lights do not require a second hot wire, so they will work with a 1 wire pair...there are very few exceptions. If you give us a call, we will be happy to help you choose the best fan for your needs and make sure you can install it.
QUESTION: How far down from the ceiling does the Seaside fan hang when installed with the flushmount option?
ANSWER: Thanks for your question: The Seaside fan from Savoy House comes with an 8" downrod as well as a flush mount adapter. The bottom of the fan cage hangs 16.3" from the ceiling when installed with the 8" downrod. Although the manufacturer does not specify the hanging distance with the flush mount option, after reviewing the installation instructions I have estimated that the flush mount option will reduce the distance by at least 6" to be safe...if not a bit more. That would put the bottom of the fan at about 10" from the ceiling.
QUESTION: I want to purchase the 36" Down rod DR536-CT (Cattera Bronze finish) $25.13 for the Santa Lucia Ceiling Fan I recently purchased from you. However, when I try to select it the website automatically adds the fan too. Please help
ANSWER: Sorry you are having trouble ordering a downrod. Here is what you can do: Simply delete the fan from your shopping cart to order just the downrod or use this link to add the downrod to your cart by itself:
Minka Aire DR536-CT Downrod.
QUESTION: Do you happen to carry Hunter fan light fixtures that have a triangle base. These are not held in by screws but by a clip system.
ANSWER: I am sorry to report that we do not have any of the Hunter light fixtures you are looking for. Hunter only made the triangular fixtures for a short period of time and they discontinued them several years ago (too many problems). It is unlikely that you will be able to locate one anywhere. If you can email me some pictures of your fan along with the model number (located on a label on top of the fan housing), I may be able to come up with an alternative that will fit. Email your pictures to: email@example.com
QUESTION: How powerful is the fan? It will be used in an upstairs room that gets quite warm?
ANSWER: Regarding the Emerson Carrera Grande Eco, it is one of the most powerful and efficient fans we sell. The Emerson ECO fans are some of our most highly recommended fans overall. You will certainly be happy with the airflow compared to fans of lesser caliber. Here is a link where you can Read More Aabout the Emerson Eco Fans.
First off, I love all the consumer information Hansen Wholesale provides.
I'd love a clarification on something. You say that hugger fans don't work as well as regular ceiling fans. This makes total sense. However, why would the Modern Fan Velo Hugger be rated at the same 6650 CFM and 5.54 MPH wind speed as the regular Velo?
(Is it because the blades are installed as low as possible on the hugger fan, thus negating the height benefits?)
ANSWER: You are exactly correct. When installed with a standard downrod, the regular Velo hangs down the same distance as the Velo Hugger, so the airflow is the same.
Per the information on the site, the new DC motors, the Emerson K55XL, and other "induction" type motors are considered best quality. If that's the case, how do fans with smallish non-special motors (Say, Savoy House Indira, with 153 x 22mm motor) earn a 5 rating?
ANSWER: There are exceptions. A 5 rating is not just based on the motor inside the fan, but the overall consideration of the quality of the components and performance. Most 153mm motors are only 12mm to 15mm tall and tend to be overworked. The motor used in the Indra is 22mm tall, which is very unusual. This is a special motor that Savoy House had designed for this fan and the performance and quality of the motor are excellent. The 3-blade Indra produces a whopping 8517 CFM and runs very smooth and quiet. The entire fan was designed to produce maximum airflow while reducing noise. The blades have a very special aerodynamic design and the fan runs perfectly quiet. When I saw this fan introduced at the lighting show in Dallas, I was very impressed. Overall, one of the best fans I have rated in years. A DC motor would have been nice...but was not necessary to earn a 5 in my book.
QUESTION: Hi, I have 4 rooms I'm thinking of installing fans. One is 10x14, 2 are 13x14, and a fourth is 23x15. For the first 3 I was considering Minka Aire F513. For the largest room I was thinking about Minka Aire MF-689. Will these be adequate?
Thanks, Tom Kelley
ANSWER: The Minka Aire F513 New Era fans will be great for the 3 smaller rooms. For the larger room, a single ceiling fan will not be adequate...you should install 2 fans. If you install 2 fans, then the F689 Kola-XL 60" fans would be a great choice. If you can only install a single fan, then I would recommend an even larger fan (up to 84") such as the Fanimation Odyn. Here are links to those resources: Large Ceiling Fans or The Fanimation Odyn. Please call us at: 1-800-201-1193 and we will be happy to discuss all of your options and help you make an educated decision.
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