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• M1411.9

  Condensate Disposal

  • Condensate runs from the pan to an approved disposal point at 1/8 in per ft or more, never onto a street, alley or anywhere it's a nuisance.

  Local review: Attic air handlers are common in San Antonio; check the city's mechanical amendments for where condensate may discharge (yard, plumbing drain or receptor).

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

• M2101.29.1

  Flood Hazard

  • Piping in flood hazard areas resists flood and buoyancy loads to the design flood elevation.

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

• M1413

  Evaporative Cooling Equipment

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

• G2442

  Forced-Air Warm-Air Furnaces

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

• M1306

  Clearances From Combustible Construction

  International Residential Code, 2024 · Chapter 13, General Mechanical System RequirementsRead the full text (opens UpCodes in a new tab)

• M2301.2.1

  Access

  • Solar equipment has maintenance access and doesn't block doors, windows, roof equipment, vents, hatches or skylights.

  International Residential Code, 2024 · Chapter 23, Solar Thermal Energy SystemsRead the full text (opens UpCodes in a new tab)

• M1410

  Vented Room Heaters

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

• M2101.22.2

  Central Systems

  • Central utility systems get shutoffs on the building supply and return.

  International Residential Code, 2024 · Chapter 21, Hydronic PipingRead 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.