Dryer vent code requirements are found in Section M1502 of the 2021 International Residential Code (IRC). These guidelines are designed to ensure safe and efficient operation of your …

Domestic dryer exhaust duct power ventilators shall conform to UL 705 for use in dryer exhaust duct systems. The dryer exhaust duct power ventilator shall be installed in accordance with the …

Per the requirements of the International Residential Code, Section M1502 (2009-2021 IRC), the clothes dryer exhaust duct should be a rigid or semi-rigid metal duct made of galvanized steel …

Dec 30, 2024 · The most important dryer venting code requirement is that the dryer duct should always go to the outside and never vent into an attic, soffit, or crawlspace. Below, we detail all …

Domestic dryer exhaust duct power ventilators shall conform to UL 705 for use in dryer exhaust duct systems. The dryer exhaust duct power ventilator shall be installed in accordance with the …

Understand dryer vent code requirements to prevent fires and improve safety. This guide covers materials, length, and installation rules for your home.

Oct 3, 2022 · This post is a summary of the code requirements and my suggestions for the most straight-forward way to handle the situation. All code references are the 2021 ICC Codes.

Dec 2, 2025 · Every mechanical exhaust, especially for dryers, has to discharge outdoors. You do not meet dryer vent code requirements 2021 IRC if you vent into the attic, soffit, ridge, or crawl …

Sep 15, 2025 · Core dryer vent requirements include a minimum 4-inch diameter metal duct, a listed outdoor termination hood, and clearances from openings and combustibles as defined …

May 20, 2022 · Dryers need independent venting systems, terminating outside, away from house openings. Ducts must be smooth, 0.0157" thick, 4" in diameter, and sufficiently long. Booster …