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 …

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 …

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 …

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 …

Clothes dryer exhaust vent installation, materials, requirements, model building codes & mechanical codes. This article series describes good practices for clothes dryer vent …

Dec 2, 2025 · Dryer vent code requirements 2021 IRC—Get the rules on ducts, lengths, terminations, and the real reasons dryer installs fail inspections.

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 …

Oct 17, 2025 · Proper installation of a dryer vent is essential for safety, efficiency, and compliance with building codes. When venting a dryer through a roof, specific code requirements ensure …

Oct 19, 2025 · This comprehensive guide explains the key code requirements, suitable materials, installation steps, common violations to avoid, and ongoing maintenance practices.