What is the code for dryer vents?
The maximum length of a 4-inch (102 mm) diameter exhaust vent shall not exceed 35 feet (7620 mm) from the dryer location to wall or roof termination, and shall terminate with a full opening exhaust hood. A reduction in maximum length of 2.5 feet for each 45-degree bend and 5 feet for each 90-degree bend shall apply.
Do indoor dryer vents meet code?
In fact, the 2016 California Mechanical code 504.4 specifically says: “Clothes dryer exhaust ducts shall (meaning required to) terminate to the outside of the building.” Many states have this same code. This means that Indoor Dryer Vent Kits are against code in California and in fact, in most other states.
Is it OK to vent a dryer under the house?
2: It’s OK to vent a dryer into the crawlspace or attic, rather than all the way outside. DO NOT vent your dryer directly into a crawlspace, basement or attic.
Where should a dryer vent be located?
It’s best to route the dryer vent in a horizontal path to the home’s outside wall. All horizontal runs should pitch 1/4-inch per foot to the outside. This will help to avoid moisture from sitting in the pipe or draining back to the dryer.
Can you use plastic pipe for dryer vent?
UL Recommendations According to Underwriters Laboratories (UL), an organization dedicated to product safety certification for more than a century, plastic and vinyl should never be used to vent a clothes dryer. Instead, UL recommends rigid or flexible aluminum for the dryer exhaust hose and ducts.
Can a dryer vent be 3?
Can a Dryer Vent be 3 inches in Diameter? You should never use a 3-inch vent pipe when installing your dryer vent. Anything smaller than 4 inches round is a clogging hazard, and you could end up damaging the dryer itself or starting a fire.
Can a dryer vent be below a window?
There should be no visible lint buildup at any connection from dryer to exterior. Duct vents at exterior should be a minimum of 3 feet from any other opening; window, door, other vents, etc.
Is it OK to vent dryer into garage?
You shouldn’t vent your dryer into a garage because the exhaust from gas dryers contains carbon monoxide, which can be fatal if allowed to build up in your home. Other issues that could crop up include lint buildup, mold infestation, and structural damage.
Can a dryer vent go straight out?
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. The maximum length of the exhaust duct does not include the transition duct. This means that vents should also be as straight as possible and cannot be longer than 35 feet.
Can a dryer vent be under a window?
An electric or gas dryer vent would need be kept 3′ from any intake vent or gas meter regulator, and a gas dryer vent should not vent directly above a regulator unless it’s at least 15′ above. A gas dryer requires 12″ clearance from grade and 12″ clearance from a window or door that can open.