For HVAC replacement, Title 24 often addresses duct sealing and leakage — frequently with HERS field verification when ducts are altered or replaced.
Ducts under Title 24
Altering or replacing ductwork can trigger duct-sealing requirements and HERS-verified leakage testing, depending on scope and jurisdiction. Title 24 is a statewide California energy code. HVAC Replacement projects follow the same statewide standards; the exact requirements depend on your project's scope and address, which we model in CEC-approved compliance software. Related: HERS verification.
Related: HVAC Replacement Title 24 overview · pricing · Title 24 guide.
More on hvac replacement Title 24: HVAC requirements · heat pump requirements · requirements.
Statewide: HERS verification.