Where should exhaust fan be located in bathroom?

Typically a bathroom exhaust fan should be mounted as close to or inside (if rated for tub shower use) to the shower or tub as possible. This will maximize the effectiveness of the unit. Units located in a powder room, should be directly over the toilet.

Can 2 bathroom exhaust fans be vented together?





Well, you can’t! You’d often blow air from one bathroom into the other, and local building inspectors wouldn’t approve it. But while you can’t have two fans with one vent, you can make one fan and one vent serve two bathrooms.

Do bathroom exhaust fans need to be vented outside?

Note that the bathroom vent fan must always exhaust to the outdoors; never allow the duct to simply blow into an attic, crawlspace or other enclosed area.

What is the best way to install bathroom exhaust fan?

Quote from the video:
Quote from Youtube video: If you don't have access to your attic you'll have to vent it through the side wall. Since our fans are replacement or able to use our old switch which make things a lot easier.

Can you put an exhaust fan above a shower?

In summary, you actually should install your bathroom exhaust fan in your shower, preferably right over it, where the hot moist air flows directly first. Make sure your electrical circuitry is GFCI protected, and that the fan is rated for shower use.

Is it OK to vent a bathroom fan through the soffit?





A bathroom fan can be vented through soffit so that the warm air from the bathroom comes out through it and goes outside. However, It is important to keep in mind it can not be vented into the soffit, as this will lead moisture back into the attic.

How do you vent a bathroom with no outside access?

Installing a ceiling vent is probably the most efficient way to ventilate a bathroom with no outside access. A ceiling vent is a unique machine that allows air to escape from the bathroom. In other words, it’s a machine that, like an open window, allows moisture to escape from your bathroom.

How do you vent two bathrooms?

Install a Damper For Each Bathroom Fan



A back-draft damper is a simple flap that is installed inline in the system. Normally it prevents cold air from the outside from blowing back to the bathroom. But in this case, it will also prevent one bathroom fan from blowing air into the other bathroom.

Can you tie bathroom exhaust into plumbing vent?

The answer is no way! Sewer gas is explosive and could settle back into your exhaust fan which has an electric motor that is not rated for explosive gases.

How do I install a bathroom fan without attic access?



Quote from the video:
Quote from Youtube video: You should have a little romance connector holding your wire to your box go ahead and loosen those screws pull the wire. Now disconnect your duct. Mine is taped on I'm just going to pull the page.

Can you vent a bathroom exhaust fan through the wall?

If you want to vent a bathroom fan through an exterior wall, you will have to cut a 3-inch or 4-inch hole with a hole saw drill bit. If your exterior siding is vinyl or fiber cement, you will have an easier time cutting the hole.

What is code for bathroom exhaust fan?

The model building codes adopted by most jurisdictions typically require bathroom ventilation to be provided either by an operable window (3 sq. ft. or greater) or by mechanical means – a bathroom vent fan (20 continuous or 50 cfm intermittent, vented to the building exterior.

How far from a shower should an exhaust fan be?



As with a normal shower, the optimal position is close to, but not directly in the shower. Placing the bath fan 1 foot from the shower enclosure door is best. Remember to leave the shower door open after showering, this will dry it out much faster.

How far can you vent a bathroom exhaust fan?

Generally a 4 inch flex duct can carry a fan exhaust for up to 25 ft. Most codes require that.

What is maximum duct length for bathroom exhaust fan?

The larger duct allows more air to be exhausted, but it also extends the maximum allowable duct length. As an example, if you have a flex duct (non-smooth metal duct), and if your bathroom fan has a 100-cfm rating — then the longest duct according to the IRC is 42-feet for a 5-inch diameter duct.

Can flex duct be used for bathroom fan?

Flexible duct is perfectly acceptable for a bathroom fan.

Does bathroom fan duct need to be insulated?



The bathroom exhaust duct should be insulated when it passes through an unconditioned space. This means that the temperature of the space is not controlled. Most exhaust ducts run through an unheated/cooled attic and must be insulated to prevent condensation inside and outside of the duct.

Can I vent my bathroom fan into the attic?

Can I Vent A Bathroom Fan Into My Attic? No, you should not vent a bathroom fan directly into an attic. The problem with venting into the attic is that the moisture-rich air may form droplets on the wood sheathing, insulation, rafters, and ceiling joists, leading to mold growth.

How much does it cost to vent a bathroom fan through the roof?

Cost to Install a Bathroom Exhaust Fan Through the Roof



If you have a bathroom in your attic, you can vent right through the roof. This means that you do not need ductwork but a fan that can direct vent. These units cost between $50 and $300 and take about two to three hours to install for $80 to $300.

How much does it cost to have a bathroom exhaust fan installed?

The average cost to install a bathroom exhaust fan is $380, with an average range of $240 to $550. The exhaust fan itself can cost anywhere between $20 and $500; fans with additional features, such as infrared heat or a light source, are priced at the higher end of the range.