• DRYER VENTING SPECIFICATIONS Whirlpool

    The capacity to handle up to 230 CFM (cubic feet per minute) of air flow for each dryer in the system. A minimum back pressure of -0.1" (-2.5 mm) water column

  • Typical Domestic Clothes-Dryer Exhaust Duct Criteria

    Typical Domestic Clothes-Dryer Exhaust Duct Criteria (Provided by Fantech) Typical Airflow: 160 l80 cfm . Duct Rectangular Velocity Static Pressure *Total Straight Duct (Dia.) Duct Eqv.

  • CFM of Dryer exhaust Fine Homebuilding

    Sep 09, 2017· The airflow of dryer vents varies, but is generally in the range of 100 cfm to 225 cfm.

  • CLothes Dryer CFM's HVAC-Talk: Heating, Air

    Jun 06, 2006· Most are 120 to 150 cfms ,IF the 4" vent is not too long,restricted ,or has too many elbows. They are designed for a maximum od 25' of duct,with each 90° elbow counted as 5' of duct.Now I have heard some newe ones are designed for longer vent duct ,but i haven't seen that in print yet.

  • What is the maximum length for a clothes dryer vent

    Aug 18, 2018· Each manufacturer lists the rating of a dryer model in their installation manual, and the chart below is from a recent model Whirlpool high-capacity dryer. It meets the requirement for this condo with up to one 90º elbow. The chart for the long vent model of the same dryer shows a dramatic increase in allowable vent length.

  • Dryer Exhaust Systems HAMPTON ROADS

    Typical Dryer Manufacturer’s Requirements for Multiple DryersRequirements for Multiple Dryers • Vertical exhaust must not exceed 8 feet and can include up to 3 elbows • Horizontal exhaust cannot exceed 15 feet and 1 elbow. Sub TitleSub Title

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  • Clothes Dryer Exhaust Venting questions & answers

    Clothes Dryer Exhaust Venting FAQs Dryer vent questions & answers, troubleshooting, safety, repairs. Installations exhausting more than 200 cfm (0.09m3 /s) shall be provided with makeup air. you'll see that in a Typical and normally operating clothes dryer the highest temperature I could find anywhere was 143 degrees Fahrenheit inside

  • clothes dryer makeup air InspectionNews

    Nov 13, 2012· How should I interpret this: G2439.4 (614.5) Makeup air. Installations exhausting more than 200 cfm (0.09 m3/s) shall be provided with makeup air. Where a closet is designed for the installation of a clothes dryer, an opening having an area of not less than 100 square inches (0.0645 m2) for makeup air shall be provided in the closet enclosure, or makeup air shall be provided by other

  • Clothes Dryer Makeup Air The Building Code Forum

    Oct 21, 2019· Dryer Airflow The airflow of a dryer depends on the design of the exhaust vent. Each dryer model has a maximum rated vent length, shown in the product literature that is supplied with each model, or on the Whirlpool website. The exhaust airflow of any Whirlpool produced dryer at the maximum rated vent length is at least 105 CFM. The maximum airflow is 230 CFM. This includes standard

  • Building Code Dryerbox

    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.

  • What is the maximum length for a clothes dryer vent

    Aug 18, 2018· Each manufacturer lists the rating of a dryer model in their installation manual, and the chart below is from a recent model Whirlpool high-capacity dryer. It meets the requirement for this condo with up to one 90º elbow. The chart for the long vent model of the same dryer shows a dramatic increase in allowable vent length.

  • Building Code Dryerbox

    Our inspector wants to know what affect a slightly "ovalized" exhaust might have on CFM (Cubic Feet per Minute). Answer To start, the dryer's CFM data can be obtained from the OEM's operational manual and is mostly a function of the size of the motor. That information would be relevant to standard 4" round Snaplock pipe at 12.43 square inches

  • CHAPTER 5 EXHAUST SYSTEMS dryer vent pipe, dryer vent

    dryer exhaust ducts shall not be connected to a vent con-nector, vent or chimney. Clothes dryer exhaust ducts shall not extend into or through ducts or plenums. 504.5 Dryer exhaust duct power ventilators. Domestic dryer exhaust duct power ventilators shall be listed and la-beled to UL 705 for use in dryer exhaust duct systems. The

  • Inline Dryer Exhaust Fantech

    If the exhaust duct from your dryer goes on and on forever or it has more turns and twists than your favorite roller coaster, your dryer may take an extra-long time to dry the clothes. Your laundry then may need a dryer exhaust ventilator DEDPV-705. It will give an extra kick to the warm and moist air to escape the duct. Learn more

  • Dryer Vent Safety InterNACHI®

    Additionally, makeup air for the laundry room in an amount equal to the sum in cubic feet per minute (CFM) of the dryer vent fan, and of any laundry room fans, must be supplied when both fans are operating. Depending on the laundry room's size, this may approach 300 CFM. Makeup air would need to be supplied from some source.

  • static pressure for clothes dryers HVAC-Talk: Heating

    Nov 28, 2013· Ditto the numbers from 2nd opinion. Also, based upon your CFM rating, you can see a velocity of around 1,100-1,400 fpm on a clean vent at 150-220 CFM for residential appliances.