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• G2417.4

  Test Pressure Measurement

  • Test pressure is read on a manometer or calibrated gauge with the source isolated; mechanical gauges top out at no more than 5 times the test pressure.

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• G2407.6.1

  Two-Permanent-Openings Method

  • Two-opening method: one within 12 in of the top and one of the bottom, each 1 sq in per 4,000 Btu/h direct or vertical-ducted, or 1 per 2,000 Btu/h horizontal-ducted.

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• G2441

  Pool and Spa Heaters

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• G2453

  Outdoor Decorative Appliances

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• G2423

  Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities

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• M2006

  Pool Heaters

  International Residential Code, 2024 · Chapter 20, Boilers and Water HeatersRead the full text (opens UpCodes in a new tab)

• G2412.5

  Identification

  • Exposed gas pipe other than steel and CSST is labelled yellow with black GAS lettering every 5 ft, except in the appliance's room; CSST per LC1.

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• G2426.1

  General

  • Vents are listed: B and BW to UL 441, L to UL 641, Category II and III to UL 1738; plastic Category IV vents specified by the maker need no listing.

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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.