Horizon MEP
Title-24 HVAC Compliance: Common Mistakes Architects Make
California’s Title-24 Energy Code plays a critical role in HVAC system design, yet many permit delays stem from avoidable coordination issues rather than complex calculations.
1. Treating Title-24 as a Late-Stage Requirement
Energy compliance is often addressed after layouts are finalized. This approach can force equipment changes, duct resizing, and rework late in the permit phase.
2. Mismatch Between Loads and Equipment
Reviewers frequently flag inconsistencies between HVAC load calculations and selected equipment efficiencies. Title-24 energy models must align precisely with mechanical schedules.
3. Incomplete or Incorrect Documentation
Missing NRCC or NRCI forms, unsigned compliance reports, or incorrect climate zone inputs are among the most common reasons Title-24 submissions are rejected.
4. Poor Coordination Between Architecture and MEP
Envelope assumptions directly impact energy modeling. When architectural details change without updating the energy model, permit comments are inevitable.
Successful Title-24 compliance starts with early MEP involvement and ongoing coordination as the design evolves.
How Horizon MEP Supports Title-24 Compliance
Horizon MEP integrates HVAC system design and energy compliance from the outset, ensuring permit submissions align with both design intent and regulatory expectations.
Learn more about our Mechanical Engineering Services or request fast-turn support through On-Demand Project Support.