Search the building code.

• M1411.9.1

  Auxiliary and Secondary Drain Systems

  • Where overflow would cause damage, add a secondary drain: an auxiliary pan with its own drain to a visible spot, an overflow line from the unit pan, a pan with a UL 508 float shutoff, or a float switch on the primary.

  International Residential Code, 2024 · Chapter 14, Heating and Cooling Equipment and AppliancesRead the full text (opens UpCodes in a new tab)

• M1803.4.2

  Connection to Factory-Built Fireplace Flue

  • Only appliances listed for it may connect to a factory-built fireplace flue.

  International Residential Code, 2024 · Chapter 18, Chimneys and VentsRead the full text (opens UpCodes in a new tab)

• M1201

  General

  International Residential Code, 2024 · Chapter 12, Mechanical AdministrationRead the full text (opens UpCodes in a new tab)

• M2104.4

  Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Pressure Pipe

  • PE-AL-PE joints follow the compression and metal transition rules, with mechanical joints per the maker.

  International Residential Code, 2024 · Chapter 21, Hydronic PipingRead the full text (opens UpCodes in a new tab)

• G2425.15.4

  Clearances

  • Chimneys and vents keep Chapter 10 and listed clearances; unlined masonry may be relined with a UL 1777 reduced-clearance liner.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• G2423

  Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• G2451

  Infrared Radiant Heaters

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• G2447

  Cooking Appliances

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.