Specs for using flex duct for dryer venting: If despite our recommendation for metal exhaust duct material you nevertheless are using flexible fan duct, stretch the flexduct tight to keep it as straight and smooth inside as possible. We secure connected dryer vent duct sections using metal foil tape at each vent section. Do not spill the laundry vent air directly into the building attic or roof cavity, basement, crawl space, or other hidden building interior areas. You may need to be a little creative to attach everything together. This dryer vent is designed for safe indoor venting and can be used when it is not possible to use outdoor ventilation for your dryer. We include a list of clothes dryer fire safety hazards and other clothes dryer installation or maintenance mistakes that are either unsafe or that interfere with effective, economical dryer operation. Dryer Vent Periscope, 0-inch to 5-inch - Includes uniquely designed periscope to allow close placement of the dryer to the wall. It has a flexible body just 18 inches long. The periscope dryer vent duct is also suitable for usage in small areas and it also comes with a solid vent duct that is capable of being extended whenever it is necessary if you want to connect the dryer’s exhaust to your outside vent. When it comes to measuring out your vent then it won’t actually be that you need a lot of room to install the periscope … If space is tight between the dryer and the wall, a periscope vent allows the dryer to be 2 inches closer to the wall. Getting a dryer vent periscope would be actually a better tool to have in your home rather than a duct hose which may be made out of plastic and not metal. Get it as soon as Wed, Dec 2. Here is part one of an Almetal Dryer Vent Periscope installation. Inventory is sold and received continuously throughout the day; therefore, the quantity shown may not be available when you get to the store. Do not vent clothes dryers directly into the attic space: you're only putting more moisture into an area where it is already going to be a problem, inviting mold growth on wood surfaces and hidden mold growth in building insulation. The ribbed interior of the flexible duct easily catches lint. The vent provides better air flow than a partly-squashed flexible duct dryer vent, and it resists crushing, therefore it's safer. Most clothes dryer exhaust vent installations use 4" diameter vent piping, the minimum-allowed. I am trying to find out what size periscope … U.S.D. Seal the periscope vent using a spray foam sealant and your new venting set up should hold and keep moisture and hot air out. So a clothes dryer vent with three 90 degree bends to come out of the back of the dryer, run up a wall, and then across a ceiling or under a floor to a wall vent would have a maximum length of (25 - (3x5=15)) just ten feet! Click to Show or Hide Citations & References, CLOTHES DRYER VENT TERMINATION & SCREENS, CLOTHES DRYER VENT CLEARANCES & TERMINATION, CLOTHES DRYER LINT CLOG RESISTANT SCREENS, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. UPDATED RANKING https://wiki.ezvid.com/best-periscope-dryer-vents Disclaimer: These choices may be out of date. Vent the dryer duct to outside: Our photo above shows a dryer vent spilling directly below the building first floor into a soaking wet crawl space. Our dryer vent installation photos just below illustrate use of 4" galvanized metal dryer ducts. This is especially critical in long dryer runs through ceilings and walls where the risk of blockage and fire would be increased. Because all types are sold for use with dryers, you would naturally assume that all are suitable for this application. Other options New and used from $6.45. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Watch out: we have found serious and chronic lint clogging of louvered dryer exhaust vent hoods IF the hood uses multiple louvers that are small in width. To get started, we pulled our dryer away from the wall and disconnected the duct from the dryer and wall with a flat head screwdriver. Where space is limited, an adjustable offset dryer vent is used. Find Aluminum periscope dryer vents at Lowe's today. Doing so will lead to moisture condensation on building surfaces, wet, damaged, moldy building insulation, wet building framing members, wall, floor or roof sheathing. Install a secure, self-closing screened exhaust vent cover  - the vent hood, outside the building at the end of the clothes dryer vent line in order to prevent rodents or birds from entering the ductwork. The periscope dryer vent duct is ideal for tight place as well. Made of flexible aluminum foil, this is the most common type of dryer transition ducts—those that connect from the appliance to the main duct that runs to the outdoors. InspectAPedia tolerates no conflicts of interest. We include a table of the tempeatures that occur inside of clothes dryers at different places in the equipment and in its venting system and we describe unsafe dryer operating temperatures. [Dryer-Ell is at http://dryer-ell.com/ ]. Even if the dryer exhaust vent does extend to the outdoors, an improperly sloped, damaged, or disconnected dryer vent can leak moisture, lint, dust, and even dangerous carbon monoxide (CO) into the building. The maximum length for dryer exhaust duct Periscope-style dryer vent pipes are thin and inflexible, which offers two distinct benefits. The vent shown can be used on clothes dryers made by Admiral, Amana, Caloric, Crosley, Estate, Inglis, Jenn-Air, KitchenAid, Roper, Vesta, and Whirlpool. Connect the flexduct to the fan itself using Here are other clothes dryer vent materials we have encountered: Watch out: Use rigid or semi-rigid metal dryer vent material [we recommend rigid metal dryer vent ducting]: Virtually all independent authorities, including the US CPSC, Underwriters Laboratories, and the Association of Home Appliance Manufacturers, and experienced home inspectors such as Cranor all recommend the use of rigid or semi-rigid metal ducting for clothes dryer exhaust venting. Our sketches shown here, adapted from Whirlpool clothes dryer installation recommendations cited at the end of this article, show typical clothes dryer vent routing options includint a special provision for routing the dryer exhaust outside through a crawl space below a mobile home. Like I said before I have one behind my dryer and it is very difficult to reach behind the dryer to tighten the clamps on the dryer and pipe that sticks out of the wall. 4.0 out of 5 stars 534. The exhaust on my dryer is at the bottom. Find periscope dryer vents at Lowe's today. Our metal dryer vent installation shown just below has the right idea, though not a very neat installation and not properly sloped. This approach violates manufacturer instructions and is unsafe. This can be a great space-saver as long as the dryer and the vent are close together. Provide one or more dryer vent duct inspection access points at which you can disconnect and open the dryer duct system for inspection and cleaning. Insulation around the dryer vent is not normally necessary if you install straight, well-supported metal ductwork sloping to its exit point at the building wall.But if ductwork must be routed up and down through space such as an attic, air conditioned interior, or dryer vents routed through a cool crawl space where otherwise the duct will be exposed to cold air the result will be a significant level of condensation within the dryer vent duct system.For such areas and routing you should consider using insulated solid metal ducting or insulated flex duct to avoid condensation buildup, corrosion It is typically installed with clamps. Despite its popular use for many years, the plastic duct is not allowed by most building codes. If you add 8 inches for each end it would be 30 inches. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. [2][4][5][6][7][8]. Unfortunately, that is not the case. 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