Ceiling Fan Operation

Well, the placement of the fan could have something to do with it. The flow dynamics of the room may be hampering one of the two. A simple test to see if indeed the two are operating at the same high speed setting is to strobe them. Some commercial strobe lights have a interval adjustment setting. Turn both fans on and turn off all other lighting in the room. This test is better performed at night... Turn on the strobe and cycle the interval setting until one of the fans seems to "stand still". At this point the light is operating at the same frequency as the fan blades. If the other one is "standing still", then yes they are operating the same and your concern could be something else. Are the fans wired in series or parallel from the switch? Is there more than one switch (i.e. one switch for each fan)?

Check the pitch of your blade supports. No two fans have the same pitch for the blades. PLus the size of your blades are an important part of the equation. Length and width will make an important sum of the square area of the displacement. Plus check the rating on the motor, not all motors actually spin the same speed. You would be in need of checking the RPM of both fans in their given speed settings. And, one more factor to concider is the weight of the paddle blades. Not all blades are the same. And the last factor is in the bearings of the motor. Age of the bearings and how much dust that is collected on the bearing services. The more dust factor collected on the bearing serfaces will slow the rotation of the fan motor. So now you have the possible equation verrients to fix your dilema.

Installing two ceiling fans inside your bedroom is a good idea to have more air flow, but you have to take in to consideration of how is your bedroom constructed, especially the air ventilation holes at the top of your windows and the total surface areas. By switching two ceiling fans "ON" at the same time does not means that you may get maximum air flow just like the jet engins. It is possible that one of the fan may produce more air flow and the other fan does not produce the air flow like it use to. You also have to understand that inorder for the ceiling fan to rotate and produce the air flow, the ceiling fans need to suck the air from the ceiling or in other words, the air above the fan blades and pushes downwards to the bedroom floor. When the air is push downwards, the air that above the fan blades will be less in volume. Air at the surrounding area near the fan will be suck in by the ceiling fan. This problem is normal for two ceiling fans that installed next to each other at a confine space. You can test the air flow of each fans by switching "ON" one fan at a time and compare the air flow or you can use some thing to generate some smooke and put it under the ceiling fan and see the air flow patten of both of the fans.

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