When buying a ceiling fan there are several factors that should be examined before making a purchase. A ceiling fan is basically a motor with blades suspended from a ceiling. Pretty straightforward yet there are huge quality differences that can impact you and the comfort of your home.
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Putting aside all style considerations, motor size, AC or DC motor, blade pitch, blade arms and mounting hardware are the factors you should familiarize yourself with before buying a fan because these are the factors that determine the airflow, measured as CFM, the efficiency and the quiet operation of a ceiling fan.
Motor size is measured in millimeters. A small motor might be 144 x 10mn whereas a large motor might be 188 x 22mn. Blade pitch should be at least 14 degrees. Blade arms should be sturdy metal, strong enough to accommodate the blades. A DC motor is more efficient that an AC motor, but it is more expensive to purchase initially. Look carefully at all the specifications before making a purchase. You will have the fan running most of the time so you will want it to be quiet and capable of moving air.
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