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. You’re now not at code for the sewer or the fan. If a fire or explosion were to occur, good luck on your insurance claim and worse if someone was to be injured.

Where should I vent my bathroom exhaust fan?

The fan exhaust must vent directly to the exterior of the home. Do not put the vent termination in a roof overhang or soffit. Don’t put it on a wall near or under a roof overhang. The moist air that’s belched out by the fan can be sucked right up into the open soffit vents and be drawn into your attic.

Do bathroom exhaust fans need to be vented outside?





Bathroom fan installation requires outside ventilation. If the fan isn’t accessible through an attic, you’ll need to vent through a sidewall of your house. These types of ducts and vents are typically installed when the house is built. If you don’t have a duct leading to a sidewall vent, call a professional for help.

Can I vent a bathroom fan with PVC pipe?

PVC piping is an excellent material to use for venting your bathroom fan as long as the correct type of pipe is used. PVC creates a better seal than metal, so you won’t experience any problems with leakage as you could with using metal ducting pipes.

Can a bathroom fan be vented down?

Bathroom fans can be vented down as long as the length of the ductwork does not exceed the allowable length specified in the building codes. The vents will also still have to terminate outside the house. Venting down goes against the natural flow of hot and humid air, so your fan will have to work harder.

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.

Can you vent a bathroom fan through side of house?





Can a Bathroom Fan Vent through a Side Wall? You can vent your bathroom fan through a sidewall of your house. In situations where you don’t have access to the eaves of your house and you don’t want to go through the roof, a sidewall is your best option.

How do you vent a bathroom with no outside access?

Use of a ceiling vent



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.

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.

Is it OK to vent a bathroom exhaust 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.

What is the point of a ductless bathroom fan?



A ductless fan removes excess moisture from the bathroom air by passing air through a filter that draws moisture from the air. This humidity control function is critical to keeping your bathroom fresh and your furniture in tip-top shape.

How do I install a bathroom fan without attic access?

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Does plumbing vent go before or after trap?

We must always keep the vent connection above the trap weir to prevent siphoning and keep proper pressures on both side of the trap.

Can a toilet shower and sink share a vent?



Wet venting is most common in conjunction with toilets and sinks; the drain for the sink is also the vent for the toilet. It can also be used for a variety of other applications but due to the following rules this is the most convenient and common situation to run into.

Can you vent a toilet with a 2 inch pipe?

Toilet Vent Pipe Size? It’s typically recommended that you go with a 2″ PVC pipe for the vent. This is according to the uniform plumbing code (UPC). It may not be enough, depending on how many fixtures you are trying to run off the vent.

How far can vent be from shower drain?

The maximum distance from a shower trap arm to a vent is usually 5 feet, though some municipalities may allow up to 8 feet.

Can you put a 90 in a vent pipe?

Do not use the sharp, 90-degree vent elbow designed for venting above the water line. Note: You may have vent piping, but you still cannot use the tight 90-degree elbow — sometimes called a “vent elbow” — if the joint is below the water level, which is usually at the level of the sink. 3.

Can you vent a drain horizontally?



2. Can Vent Pipes be Horizontal? There is no problem with running your vent pipes horizontally as long as you remember that there should be a minimum clearance of 6 inches above the spill line.