IECC 2021 · Model

Chapter 3: General Requirements

38 sections in this chapter of the IECC 2021 model text — not Model's amended edition.

301.2 Warm humid counties In Table C301.1, warm humid counties are identified by an asterisk.

Plain-English guides for this chapter
  1. 301.2Warm humid counties
  2. C301.1General
  3. C301.2Warm humid counties
  4. C301.3Climate zone definitions
  5. C301.4Tropical climate region
  6. C302.1Interior design conditions
  7. C303.1Identification
  8. C303.1.1Building thermal envelope insulation
  9. C303.1.2Insulation mark installation
  10. C303.1.3Fenestration product rating
  11. C303.1.4Insulation product rating
  12. C303.2Installation
  13. C303.2.1Protection of exposed foundation insulation
  14. C303.2.2Multiple layers of continuous insulation board
  15. C402.2.1Roof assembly
  16. C402.3Roof solar reflectance and thermal emittance
  17. C402.4.3Maximum U -factor and SHGC
  18. C402.4.4Daylight zones
  19. C402.5.1Air barriers
  20. C402.5.2Dwelling and sleeping unit enclosure testing
  21. C403.11Refrigeration equipment performance
  22. C403.4.1Thermostatic controls
  23. C403.6Simultaneous Heating and Cooling
  24. C403.7.1Demand control ventilation
  25. C403.8Piping Insulation
  26. C405.2.1Occupant sensor controls
  27. C405.2.3Daylight Responsive Controls
  28. C407.1Total Building Performance
  29. R301.1General
  30. R301.2Warm humid counties
  31. R301.3Climate zone definitions
  32. R301.4Tropical climate region
  33. R302.1Interior design conditions
  34. R303.1Identification
  35. R303.1.1Building thermal envelope insulation
  36. R303.1.5Air-impermeable insulation
  37. R303.2Installation
  38. R303.2.1Protection of exposed foundation insulation

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