How to Replace a Light Fixture With a Ceiling Fan how tos. Watch video of this step. If you have access from above, you can make and install your own support brace using a length of 2x. Image 2. Position the brace directly above the ceiling box. From below, use wood screws to attach the ceiling box securely to the brace. If you do not have access to work above the ceiling, you can install an expanding metal brace from below to support the ceiling box and fan. NTEzWDkzNw==/z/L08AAOSwEetV8VZb/$_32.JPG?set_id=880000500F' alt='Installing A New Bathroom Ceiling Fan' title='Installing A New Bathroom Ceiling Fan' />Installing a weak, undersized fan is almost not worth the effort, even if the fan meets the minimum requirements. Use these tips to get the sizing right. First, remove the existing box, then insert the brace up through the hole and secure it in position by ratcheting the mechanism into place. As the ratchet is turned from below, arms on the brace extend until they contact the ceiling joists on both sides of the hole Image 3 demonstration. The spikes on the arms anchor securely into the wood. Some braces are available with a ceiling box attached, or you can attach the existing ceiling box to the brace. This method also may be used to mount a fan on a ceiling where no electrical fixture was previously installed. After a hole is cut in the ceiling, electrical wiring is routed to the hole from a convenient nearby junction box, then the brace and a new ceiling box are installed as described above. How to Size a Bathroom Exhaust Fan. Bathroom exhaust fans, or vent fans, do two important things they remove hot, moist air and they remove odors. Hot, moist air leads to mold growth, and odors lead to general unpleasantness. Building codes require vent fans in all new and remodeled bathrooms, and theyre just as important in old bathrooms, even those that have windows for ventilation which arent so great in wintertime and never remove moisture as well as fans. But installing a weak, undersized fan is almost not worth the effort, even if the fan meets the minimum requirements. Use the following tips to get the sizing right. Standard Fan Sizing. Bathroom exhaust fans are rated for the amount of air they can move, measured in cubic feet per minute, or cfm. Standard fan sizing applies to bathrooms that are 1. Bathroom-Exhaust-Pic-2.jpg' alt='Installing A New Bathroom Ceiling Fan' title='Installing A New Bathroom Ceiling Fan' />The rule of thumb is that you need at least 1 cfm per square foot of room area. To determine the square footage of your bathroom, multiply the length times the width. For example, if your bathroom is 6 feet wide and 9 feet long, its square footage is 5. Therefore, it should have a fan rated for at least 5. But before you start shopping, there are a few things to consider. First, its a good idea to oversize the fan a bit. In the above example, you should get at least a 6. Second, if your bathroom has a jetted tub or separate rooms or alcoves, you might want more than one fan see below. And third, the minimum allowed fan size is 5. Sizing for Large Bathrooms. How to install a bathroom vent fan. Bath vent fan installation building codes, bath vent fan troubleshooting, bath vent fan repair this article series explains why. HomeAdvisors Ceiling Fan Cost Guide lists prices associated with installing or replacing ceiling fans indoors and outdoors, as reported by HomeAdvisor customers. Use our handy online calculator to see what size bathroom vent fan you need for your home. Enter bathroom dimensions to find the cubic feet per minute CFM. Not sure how to choose an exhaust fan for your bathroom Once you ascertain the proper air rating, there are several other factors to consider, including noise level. I just installed a ceiling fan in my daughters room. This was a first for me, and I made more mistakes than what I did right. However, in the end, I think it is. For bathrooms over 1. To calculate using this formula, add up the required cfm ratings for all of the fixtures Bathtub 5. Jetted tub 1. 00 cfm. Shower 5. 0 cfm. Toilet 5. Therefore, having a shower and a toilet in a bathroom would require a 1. Another calculation is useful for large rooms with high ceilings well over 8 feet Multiply the square footage by the ceiling height, divide by 6. For example, for a room thats 1. Do You Need More than One Fan If your bathroom has an enclosed toilet or shower area, its a good idea to install a separate exhaust fan for that area. If the space is small, a 5. Debian Install Crypt Ssleay. Otherwise, use the appropriate calculation based on the room size. A separate fan is particularly effective when the enclosed space has a door. Just remember that the fan needs airflow to do its job. If the door is closed and theres no gap at the bottom of the door, the fan will be starved of makeup air and will perform poorly. The gap should be at least 58 inch tall, or you should leave the door ajar when the fan is running.