Absolutely not. Bringing two exhaust vents together that likely have very different pressures is a recipe for failure (and potentially dangerous backflow). They must be vented separately.

Can dryer vents be combined?

The ductwork for both dryers should be kept completely separate. The 4-inch diameter of standard clothes dryers is designed to handle the flow of air for one appliance only. It’s fine to run the ducts parallel.

Can you run two vents one duct?

If you have two bathrooms that are close together and one has an exhaust fan and the other doesn’t, you might be wondering if you can tie a new exhaust duct into the existing one. Well, you can’t! You’d often blow air from one bathroom into the other, and local building inspectors wouldn’t approve it.

Can a dryer vent into a room?

Venting a dryer into the living space in a home adds additional pollutants, such as chemicals from the detergents, as well as lint that escapes from the lint trap.” He adds that a gas clothes dryer never should be vented to the indoors under any circumstances.

What is code for a dryer vent?

Dryer venting systems are covered in the International Residential Code (IRC) at M1502 – Clothes Dryer Exhaust.

Does each dryer need its own vent?

Every electric dryer has to have an outlet through which it expels warm, moist air, or it won’t work. The air is usually loaded with lint, and if you don’t vent it outside, it can cause all kinds of problems. The moisture can rot framing and promote mold growth, and the lint can catch fire.

Can you connect 2 dryer hoses together?

Yes. You can either just use duct tape to join two ends together, or, they do make splices that you can connect one end of each hose to each side using whatever connectors that you want, (zip-ties, screw-clamps, etc.)

How close can exhaust vents be to each other?

Combustion vents must be located at least 3 feet above any building opening within 10 feet. Non-combustion appliance vents should be located 3 feet from any building opening.

Should bathroom fans 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.

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. You’re now not at code for the sewer or the fan.

Are flexible dryer vents legal?

Plastic or Vinyl Duct



The flexible plastic (usually vinyl) duct is similar to aluminum foil duct but has a thin plastic wall rather than metal foil. Despite its popular use for many years, the plastic duct is not allowed by most building codes. The ribbed interior of the flexible duct easily catches lint.

Is it OK to vent a dryer through the roof?

It is not advisable to vent a dryer through the roof. This is one of the most common mistakes we see from people who are not experienced with air ducts. Dryer vent specialists will tell you that a vertical approach to installing a dryer vent is inefficient and creates a fire risk for a home if it goes unchecked.

Is it OK to vent electric dryer into garage?

So yes, venting a dryer into a garage is feasible but you must eliminate hot air outside. Otherwise, the garage will become humid, causing problems such as mold, growth, and rust.

Why does a dryer have to be vented outside?

Dryer vents assist in creating a suction force that removes lint from clothes and allows air to circulate more effectively. The exhaust of the dryer vent should be directed outdoors where warm air, gases, and lint are expelled away from the home.

How do you redirect a dryer vent?

Quote from the video:
Quote from Youtube video: Straight through the garage up along the ceiling. All the way down to the outside so you can see the little brackets here that hold it really really well.

How long can a dryer duct be?

35 feet

The maximum developed length of a clothes dryer exhaust duct shall not exceed 35 feet from the dryer location to the wall or roof termination. The maximum length of the duct shall be reduced 2.5 feet for each 45-degree (0.8 rad) bend, and 5 feet for each 90-degree (1.6 rad) bend.

Can you run a dryer vent vertically?

DEAR BOB: A vertical dryer vent is typically a problem because it acts as a moisture condenser. The sheet metal duct is cooled by the outside air in the attic. This causes the steam from your dryer to become liquid on the inner surface of the duct.

Is it better to vent a dryer up or down?

It’s fine for the dryer vent to rise vertically to enter the building ceiling, but within the ceiling the vent should slope downwards towards its exit point at the building exterior wall.

Can I use PVC pipe for dryer vent?

Currently, PVC, Vinyl, or aluminum foil material is still common in plumbing applications. However, manufacturers do not permit their use for venting a dryer. PVC or Vinyl duct trap can easily melt because of the hot air coming from the dryer.

Should dryer vents be metal or plastic?

Dryer venting tips and practices



Flexible transition hose between the dryer and the wall outlet should be either the foil type or the aluminum flexible duct (most preferred). Do not use the plastic or vinyl. Concealed ducting must be rigid metal (galvanized or aluminum) duct.

Can you use flexible duct for dryer vent?

You can use a 4-inch flexible aluminum foil duct that is UL 2158A listed and marked for safe dryer venting. Look for a product that is constructed from heavy duty, fire resistant aluminum foil with a high density, corrosion resistant wire helix. Remember that only ducts 8 feet or less can be UL listed and marked.