§ Chapter 15 IRC 2024
Exhaust Systems
16 entries from Chapter 15 of IRC 2024, organized by section number. Each entry covers what the code requires, why it exists, what inspectors look for, and common mistakes.
§ 01 Sections
All 16 entries.
Sorted by section number. Click any row for the full entry — answer, requirements, edition diff, related sections.
Section
Title
Question
M1501.1
IRC 2024 Bathroom Exhaust Termination: Venting to Exterior, Not to Attic
M1501.1
Where must a bathroom exhaust fan terminate under IRC 2024?
Where must a bathroom exhaust fan terminate under IRC 2024?
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M1502.3
IRC 2024 Dryer Vent Outdoor Termination: Location, Damper, and Screen Prohibition
M1502.3
Where must a clothes dryer vent terminate under IRC 2024 and can it have a screen?
Where must a clothes dryer vent terminate under IRC 2024 and can it have a screen?
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M1502.4
IRC 2024 Dryer Exhaust: Rigid Metal Duct, 25-Foot Maximum, and Screen-Free Cap
M1502.4
What does IRC 2024 require for clothes dryer exhaust duct material, length, and termination?
What does IRC 2024 require for clothes dryer exhaust duct material, length, and termination?
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M1503
IRC 2024 High-Performance Residential Kitchen Exhaust: When Residential Rules Apply
M1503
Does IRC 2024 apply to high-BTU residential ranges, and how do you calculate the right hood CFM?
Does IRC 2024 apply to high-BTU residential ranges, and how do you calculate the right hood CFM?
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M1503
IRC 2024 Kitchen Range Hood Exhaust: Minimum CFM, Duct Size, and Grease Filter Rules
M1503
What does IRC 2024 require for kitchen range hood exhaust duct size, CFM, and grease filters?
What does IRC 2024 require for kitchen range hood exhaust duct size, CFM, and grease filters?
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M1503.1
IRC 2024 Kitchen Exhaust Duct: Smooth Metal, Maximum Length, and Exterior Termination
M1503.1
What does IRC 2024 require for kitchen exhaust ducts?
What does IRC 2024 require for kitchen exhaust ducts?
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M1503.3
IRC 2024 Range Hood CFM: Minimum Airflow and Makeup Air Threshold
M1503.3
What CFM is required for a range hood under IRC 2024, and when is makeup air required?
What CFM is required for a range hood under IRC 2024, and when is makeup air required?
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M1503.4
IRC 2024 Makeup Air: Preventing Backdrafting from Large Exhaust Fans
M1503.4
When does IRC 2024 require makeup air for a range hood or exhaust fan?
When does IRC 2024 require makeup air for a range hood or exhaust fan?
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M1507
IRC 2024 Exhaust Fan Sizing: CFM by Room Size and Use
M1507
How do you size an exhaust fan to meet IRC 2024 CFM requirements by room type?
How do you size an exhaust fan to meet IRC 2024 CFM requirements by room type?
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M1507.2
IRC 2024 Bathroom Exhaust Duct: Material, Termination, and Insulation Requirements
M1507.2
What are the IRC 2024 requirements for bathroom exhaust fan duct material, termination, and insulation?
What are the IRC 2024 requirements for bathroom exhaust fan duct material, termination, and insulation?
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M1507.3
IRC 2024 Whole-House Exhaust Fans: Energy Code Limits and Backdraft Dampers
M1507.3
What does IRC 2024 require for whole-house exhaust fans including backdraft dampers and energy controls?
What does IRC 2024 require for whole-house exhaust fans including backdraft dampers and energy controls?
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M1507.3
IRC 2024 Whole-House Mechanical Ventilation: Continuous vs Intermittent Operation
M1507.3
What does IRC 2024 require for whole-house mechanical ventilation in new homes?
What does IRC 2024 require for whole-house mechanical ventilation in new homes?
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M1507.4
IRC 2024 Toilet Room Ventilation: When a Half-Bath Needs an Exhaust Fan
M1507.4
Does a half-bath or powder room need an exhaust fan under IRC 2024?
Does a half-bath or powder room need an exhaust fan under IRC 2024?
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R.Appendix F
IRC 2024 Radon Mitigation: Passive Stack Required in High-Risk Zones
R.Appendix F
Does IRC 2024 require a radon mitigation system in new homes?
Does IRC 2024 require a radon mitigation system in new homes?
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R408.2
IRC 2024 Crawl Space Exhaust: When Mechanical Ventilation Replaces Passive Vents
R408.2
When does IRC 2024 require a mechanical exhaust fan in a crawl space instead of passive foundation vents?
When does IRC 2024 require a mechanical exhaust fan in a crawl space instead of passive foundation vents?
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R806.4
IRC 2024 Powered Attic Ventilators: Requirements and Energy Code Controversy
R806.4
Are powered attic ventilators permitted by IRC 2024, and what controls are required?
Are powered attic ventilators permitted by IRC 2024, and what controls are required?
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