This CASE Report will investigate the options to reduce energy use and improve indoor air quality (IAQ) in multifamily dwelling units. It will also evaluate the cost-effectiveness and feasibility of a mandatory compartmentalization air leakage requirement and develop a path for a multifamily building to conduct an infiltration test verified by HERS blower door testing on a sample of multifamily units per building or per floor. This CASE Report will include the following four submeasures.
- Reduce infiltration.
- Reduced leakage from central ventilation shafts.
- Balanced ventilation and energy recovery ventilator/heat recovery ventilator prescriptive requirements for some Climate Zones and credit elsewhere.
- Kitchen exhaust hood capture efficiency.
Central Ventilation Shaft Sealing
This submeasure will require that central ventilation shafts in new construction multifamily buildings be sealed within a maximum leakage rate and tested for compliance.
Heat or Energy Recovery Ventilation in Select Climate Zones
This submeasure is a prescriptive option for a heat recovery ventilator (HRV) or energy recovery ventilator (ERV) in certain climate zones.
Kitchen Range Hood Capture Efficiency
This submeasure proposes a requirement that kitchen range hoods in new multifamily units meet a minimum capture efficiency.
Measure proposals, supporting documents, and other outside references will be made public as they become available.
- Presentation – Aug. 22 – Multifamily HVAC and Envelope Utility-Sponsored Stakeholder Meeting
- Notes – Aug. 22 – Multifamily HVAC Envelope Utility-Sponsored Stakeholder Meeting
Give Us Your Feedback
The Statewide CASE Team values input from all stakeholders engaged in the Title 24, Part 6 code change process. We encourage the open exchange of code change comments and concerns.
Use the form above to provide feedback on this measure.