How To Replace A Bathroom Vent Fan

When choosing a vent fan for your bathroom look for a model that is quiet 1 5 sones or less and moves enough cubic feet per minute cfm of air as discussed in sizing a bathroom vent fan.

How to replace a bathroom vent fan. Kits are available that allow you to replace just the motor unit without replacing the fan housing or you can replace the entire vent fan. Begin by removing the screws on the cover of the old fan so that you can access the wiring. If your new exhaust fan is larger you will need to cut some of the drywall with a keyhole saw and possibly attach wood supports to the joists. Old bathroom vent fans can be noisy and may not do a very good job of removing moist humid air from your bathroom to keep mold and mildew from forming.

Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Simply remove the old fan attach the new housing hook up the ductwork and wiring and you re done. You can replace a dead motor without tearing out the ceiling and replacing the whole thing. However the replacement fan was 4 so i bought a duct reducer installing the 4 end onto the fan and the 5 end onto the new ductwork.

All in it cost about 125 for the fan and supplies. Many times a little work will save or replace an old fan motor or blade. Before even purchasing a new bathroom exhaust fan it may be a good idea to remove the fan cover and measure the exhaust fan housing in between the drywall. Fans also have a sound rating measured in sones.

Shows advice on bathroom exhaust vent fan repair replace and maintenance oil decisions. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. Simplify the installation process when installing a new bath fan with a new easy install model. Unlike older vent fans new models are much quieter and more efficient.

There s nothing wrong with increasing the size of the ductwork but don t ever do the opposite or you will restrict the exhaust from the fan. To determine which size fan to buy for your bath multiply the room s square footage by 1 1. Avoid venting through a soffit vent or ridge vent. Fix your bath fan without replacing the entire unit and improve air flow with a first class vent system.

Bathroom vent fans are rated by how many cubic feet of air they can move in one minute known as the cfm rating. Here s how to replace an existing vent fan with a new one. If you have access to the attic the fan can vent either through a gable wall or roof. You can also improve venting and prevent roof rot by running the vent through the roof and not leave it in the attic as was done by many contractors.

It easier than trying to install.