Bath exhaust fan quieter when drywall closed bottom?

Eino McLaughlin asked a question: Bath exhaust fan quieter when drywall closed bottom?
Asked By: Eino McLaughlin
Date created: Tue, Apr 27, 2021 10:07 PM

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Those who are looking for an answer to the question «Bath exhaust fan quieter when drywall closed bottom?» often ask the following questions:

❔ Bath exhaust fan quieter when drywall closed back?

Bath exhaust fan slows down when showering and speeds up when i get out and open the door. Whats going on? ... Gutted and rebuilt a back yard shack and turned it into an awesome home office… get ready for closing the rest of the walls and drywall for the ceiling. Week 7. More garbage.

❔ Bath exhaust fan quieter when drywall closed full?

The Bath Fan Upgrade Kit is simply a quieter replacement fan that fits in the existing housing, so there’s no need to rip up the ceiling, and the new grille gives your fan a new look. The more powerful motor in this quieter fan means the fan will do a better job of ventilating the room.

❔ Bath exhsust fan wuiter when drywall closed?

A wall-mounted exhaust fan should be installed as close to the ceiling as the wall framing allows. It should be installed near the shower (but not in the shower stall). Backdraft dampers that come with bathroom exhaust fans are not airtight, and there are technical reasons why it's difficult to make them airtight, so some air leakage is inevitable.

10 other answers

Exhaust fans are typically installed in bathroom ceilings and in kitchen range hoods, or sometimes kitchen ceilings or walls, to provide spot ventilation. Generous holes are often cut in the ceiling drywall for installation of bath exhaust fans and kitchen exhaust fan ducts, leaving gaps where the fan box or duct is installed.

The lower the number, the quieter the fan will be. One sone is roughly equal to the noise your refrigerator makes. Most fans are between .75 and 1.5 sones, but there are some as low as .3 or as high as 6! PRO TIP: Experts generally recommend fans with ratings of 1.5 or less. Don’t Buy a Cheap Fan. Most home centers have basic bath fans for about $20, but they’re loud and have low CFM ratings.

The average life of a bathroom exhaust fan is about ten years, which means there are things beyond repair. Fortunately, investing in modern, ultra-quiet fans is cost-effective. If you decide to buy a new one, you can either hire a professional to place it, or you can do it yourself:

One of the main sources of noise from your bathroom exhaust fan is the ductwork it hooks into. When your fan removes the air from your bathroom, it has to then transport it outside of your house through a vent. The air is carried through the ductwork. No matter what you do, moving air will always create some level of noise.

If the door is closed and the bathroom fan is exhausting 50 cfm, then an equivalent volume of makeup air is coming into the bathroom. If the bathroom has an exterior wall, some of the makeup air is coming from the exterior—through leaks around the window, for example.

The lower the number, the quieter the fan is. For a bathroom fan to be considered quiet, it must have a 1.0 or lower sone rating. Some modern bathroom exhaust fans are built for near-silent operation. This would be 0.5 sones and less. An average amount of noise would be anywhere in the range of 1.5-3 sones.

The Bath Fan Upgrade Kit is simply a quieter replacement fan that fits in the existing housing, so there’s no need to rip up the ceiling, and the new grille gives your fan a new look. The more powerful motor in this quieter fan means the fan will do a better job of ventilating the room.

5. Bathroom door closed. Unless your bathroom has a large gap between the bottom of the door and the floor or some other way for air to get into the bathroom, the bath fan will quickly be pulling against a pressure that makes it difficult to move much air.

In spite of the code’s archaic loophole, builders should install an exhaust fan in every bathroom or toilet room — even when the bathroom has a window. A bath exhaust fan can perform several functions: It can exhaust smelly air, allowing fresher air to enter the bathroom. It can exhaust humid air, allowing dryer air to enter the bathroom.

Replacing the Exhaust Fan Without Attic Access: When you’re installing the bathroom fan into a ceiling below another floor, your new fan won’t simply slide into a size-for-size opening. You must cut the hole bigger to allow the protruding parts of the housing to make it through the cutout.

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