Dryer Venting Forum

Dryer Venting Forum => Building Codes => Topic started by: admin on July 29, 2009, 01:59:45 PM

Title: Where can I find information on dryer venting codes?
Post by: admin on July 29, 2009, 01:59:45 PM
2003 IMC - International Mechanical Code (https://dryerbox.com/sites/default/files/conversions/pdfs/code/2003-Intl-Mechanical-Code.pdf) (section 504) 

Building codes vary from region to region (with amendments) and not all of the jurisdictions follow the ICC or adopt ICC codes at the same time.  In most cases they all basically include the same restrictions.  Some codes have been found to be less restrictive.  Many of them concur that the exception to the 35 foot minimum run length is when the appliance manufacturer's installation instructions specify maximum lengths with particular models.   In this case, the make, model and installation instructions need to be provided to the building inspector and sometimes a permanently mounted sign or placard is placed behind the dryer identifying the overall length of the exhaust duct and the respective model that the house was approved with.  A summary of the typical codes relating the dryer venting is as follows:


New for 2018 codes will be that the passageway through the termination hood cannot diminish in size and must maintain a minimum of 12.5 sq inches.  Also, the 4" round ductwork cannot be deformed, it must retain its round profile. 
Title: Re: Where can I find information on dryer venting codes?
Post by: Rashisport on November 10, 2017, 01:37:06 AM
This is so wonderful that I found it.
Title: Re: Where can I find information on dryer venting codes? updated
Post by: admin on August 20, 2019, 11:53:33 AM
Here are links to the current 2018 International Code Council Building Codes that deal with Dryer Venting

2018 International Residential Code for One and Two Family Dwellings  Section M1502 Clothes Dryer Exhaust


2018 International Mechanical Code Section 504 Clothes Dryer Exhaust


Also, some links that apply to the new code regarding the area of the passageway of any dryer termination hood. 

https://dryerjack.com/icc-code-adoption-q3-2017-dryerjack (https://dryerjack.com/icc-code-adoption-q3-2017-dryerjack)

https://dryerjack.com/code-change-alert (https://dryerjack.com/code-change-alert)