Most of the ceiling fans available in the market move a smaller volume of air at higher speeds to achieve the desired 230 CMM flow. The airflow of a typical 48” ceiling fan in India is rated to be 230CMM, which is far greater than the fans used across the world. What kind of airflow is produced in typical ceiling fans? Fan designers vary the two components to make fans suitable for different applications with the same airflow. The airflow has two components, the volume of air moved and the speed at which that volume of air moves. The airflow from ceiling fans is measured in Cubic Meter Per Minute (CMM). Concealed lighting will never be as bright as exposed lighting, but can be perfect for rooms where ambient/decorative lighting is desired.A ceiling fan is a simple electrical appliance with blades mounted on a motor which rotates the blades to push the air and create airflow. Concealed lighting places light bulbs behind a translucent glass dome/globe, which produces a soft glow that gently illuminates a room while maintaining a warm tone. Large rooms or rooms with no existing lighting will require 3-4 light bulbs to sufficiently brighten the entire room.Īnother consideration is whether the lighting is concealed or exposed. Ceiling fans for small/medium rooms or rooms with some existing lighting might need only 2-3 light bulbs to provide sufficient light. The function of the room where the ceiling fan will be installed will govern both of these factors.Ī ceiling fan for a room with existing overhead lighting or lots of natural light (like a sunroom) probably doesn’t need its own lighting. Lighting for a ceiling fan is determined by the quantity of light bulbs and type of light encasing. This 46-inch ceiling fan has a 2,635 CFM and is in a 117 sq. All else being equal, if you are choosing between two ceiling fans or looking to narrow down potential choices then choose the ceiling fan with the larger CFM number.įor reference, I installed the following two ceiling fans in our house and have found them both to be perfectly comfortable for the rooms they’re in. Conversely, a ceiling fan meant for a large room needs to generate a lot of airflow, so it will have a large CFM.ĬFM ranges from around 1,500 to over 6,000. A ceiling fan designed to fit in a small room doesn’t need to generate a lot of airflow, so it will have a small CFM. The larger the CFM, the more airflow the ceiling fan can generate.ĬFM tends to scale with the size of a ceiling fan. This is a measurement of volumetric airflow, and refers to how much air is moved by a ceiling fan (CFM is measured at the fan’s highest speed). The next number you need to think about is CFM, which is an abbreviation for Cubic Feet per Minute. For safety, the fan blades should also be at least 7 feet above the floor. is 96 inches, then subtract 60 inches of total clearance – 30 inches on each side of the fan – leaving 36 inches maximum for the fan blade span). side of the room can only accommodate a fan blade span that is 36 inches (8 ft. This generally means that the shorter side of a rectangular-shaped room will often dictate fan blade span. The last consideration regarding ceiling fan size is that the fan blade span should be at least 30 inches from walls or other obstructions. Once you know the room size, you can use the below table to get an idea of what size ceiling fan you need: Room Size or ft 2), and refers to the area of a room (simply measure the length and width of a room – both in feet – and multiply those two numbers together). Room size is measured in square feet (abbreviated as sq. Naturally, smaller rooms need smaller ceiling fans, and larger rooms need larger ceiling fans. The size of a ceiling fan is determined by its fan blade span, which is the diameter of the circle that is formed around all of the fan blades – like this:Ī suitable fan blade span is determined by the size of the room where the ceiling fan will be installed. In this post, I will explain each one in depth and how they impact which ceiling fans are suitable for your space. There are three main factors you need to consider when choosing a ceiling fan: its size, airflow, and lighting. So I put this guide together to help you quickly and confidently choose the right ceiling fan for your room. Before starting those projects, I distinctly remember searching online at Home Depot, Lowe’s, and Amazon, and being amazed (and almost overwhelmed!) at the quantity and variety of ceiling fans that exist. I recently installed several ceiling fans in our house – both replacing a light fixture with a ceiling fan and installing a ceiling fan in a room without any existing overhead lighting. April 5, 2022Apby Peter In Home Improvement 1 Comment All you need to do is answer three questions: how big, how fast, and how bright?
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