IAPMO Publishes 2024 Editions of Uniform Plumbing Code, Uniform Mechanical Code

The Worldwide Affiliation of Plumbing and Mechanical Officers has printed the 2024 editions of the Uniform Plumbing Code and Uniform Mechanical Code in each hardcopy and digital variations, finishing a 3‐yr consensus growth cycle accredited by the American Nationwide Requirements Institute.

Important modifications to the UPC embody:

• Provision for temperature-actuated, circulation discount units for particular person fittings
• New necessities for water provide and distribution manifolds
• Up to date provisions for hot-water recirculating techniques
• Up to date minimal water high quality provisions for onsite handled nonpotable water techniques, nonpotable water units and techniques, for harvested rainwater techniques
• New Appendix R offering minimal plumbing system necessities for tiny homes
• New Appendix S with provisions pertaining to onsite stormwater therapy techniques

Important modifications to the UMC embody:

• New minimal air filtration necessities for occupied areas of mechanically ventilated buildings
• New air balancing necessities for air flow techniques
• New exceptions for supplies uncovered with ducts or plenums
• New refrigerant security group classifications based mostly on flammability and toxicity
• New necessities for refrigeration equipment rooms the place A2L and B2L refrigerants are used
• New supplies requirements for refrigerant piping, tubing and fittings
• New design necessities for geothermal district ambient temperature loop techniques
• New Appendix J addressing CO2 monitoring and clear air supply for satisfactory air flow in occupied areas

The 2024 Uniform Codes can be found electronically. The general public is inspired and invited to take part in IAPMO’s open consensus code growth course of. A code growth timeline and different related info can be found at IAPMO’s web site: iapmo.org/code-development.