The size of a ceiling fan is usually measured by the diameter of the blades or the width of its housing. If you are planning to buy a new ceiling fan, here are some tips for choosing the right size for your home.

Ceiling fan sizes are measured by the length of the blades; most standard sizes range from 44 to 56 inches, however, sizing a ceiling fan can be tricky, as there are many variables to the sizing process.

Here are some of those variables:

Blade Angle – Most fans have blades with an angle size of 50-degrees from the center. This means that for every foot away from the center of your ceiling that you measure, you will want 5-inches of blade length. So if you have 8-feet between your floor and ceiling, you would need 40 inches of blade length on your fan (8 x 5 = 40).

Proper downrod length – Not all downrods are created equal! Your downrod should be no less than 6 inches taller than the height of your ceiling. If your room is 12 feet high, you will need at least a 72-inch downrod (12 + 6 = 18 x 2, plus an extra 6 for safety reasons = 72).

Not all ceiling fans are up to the task – While this may be true of any appliance, it is especially true of ceiling fans. Make sure that your room size is not too large for your selected fan. Your fan should have a CFM rating of no less than 5200 to ensure proper air movement throughout your room. If your space is large and you want a balanced airflow, consider two smaller fans instead of one large one.

Make sure that your fan blade span does not exceed the width of your room if possible as well, as larger blades can make a room look smaller or your ceiling fan will look out of proportion with the rest of your room.

How to determine if my ceiling fan is too big for my room?

If you look up at your fan and think that it looks like it is only running at half-power, then it may be time to replace it (or perhaps give your old one away). Most fans will blink three times after a few seconds of operation when they are struggling to move air, so keep an eye out for that as well. If you find yourself replacing or installing several new fans each year, then most likely this is due to inadequate air movement (and not because they look great!)

What Size Ceiling Fan Do I Need?

Our handy guide below will help you decide what size ceiling fan is best for the room you choose. Keep in mind that a range of CFM’s are recommended depending on the square footage of your desired room below:

* 300-500 sq ft = 5,200-8,000 CFM

* 500-700 sq ft = 7,000-11,000 CFM

* 700-1,200 sq ft = 9,500-15,000+ CFM

Remember to use these numbers as a guide and check with an expert before finalizing your purchase or installation to ensure you are maximizing your air movement!

Other things to consider when choosing your ceiling fan size, include:

1. Ceiling Height

The height of your ceiling will determine how high above you can mount your fan. A general rule to follow is that if there are about eight feet between your floor and ceiling, then you’ll need at least a five-foot blade span in order to keep the air circulating over your head while standing up. This can be achieved with an 8 foot down rod installed on almost any ceiling type except very low ones (8ft long) but this would still allow full use of the remote control

2. Room Size

When choosing the right ceiling fan, you should also consider the size of your room. For example, if the space is narrow and long, use a small-diameter blade span or a flush mount to avoid making it look smaller with bulky blades.

On the other hand, in small rooms with high ceilings, this is where wide blade spans can make spaces appear bigger while keeping air moving in off-the smaller size might get lost up there. It’s generally best to choose 5-foot blade spans for rooms that are 12 feet deep or less while 8 foot spans are good options for larger spaces (12+ feet). You can always consult an expert for advice on how big is too big when it comes to choosing the right ceiling fan.

3. Lighting & Conditioning

Instead of choosing a large blade span, you might also want to consider getting two smaller fans to provide the same amount of air circulation in your room. This is especially important if there are already lighting fixtures on the ceiling since installing another fixture would be too much. If you use AC on a regular basis, choose a high-powered fan that’s capable of moving air throughout the entire room (the higher the CFM rating on cooling/air movement capacity, the better).

4. Style

The final thing to keep in mind when choosing your ceiling fan size is style preferences. For example, if you have a preference for Victorian-style homes with dark wood or metal, then go for a smaller-diameter blade span or flush mount that will blend in with the furnishings. For more modern spaces, opt for larger blade spans while opting for attractive but inconspicuous designs.

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