Mechanical Engineer with residential HVAC design experience to assist with a new construction home in California

My new-construction home in California (just over 4,000 sq ft) needs a complete HVAC design package. The concept I want to pursue is a dual heat-pump arrangement paired with a passive cooling strategy; beyond that, I’m relying on solid load calculations to dictate exact equipment selection, whether that ends up being Carrier, Trane, Lennox, or another equivalent line.

Here’s what I need from you:

• Full heating and cooling load calculations that respect California climate data and Title 24 requirements
• Sizing and selection of two coordinated heat-pump systems plus any ancillary components required for passive cooling integration
• Ductwork layout, airflow balancing, and equipment schedule ready for my architect and builder to drop straight into the permit set
• Clear, stamped (if you carry a California PE) or otherwise ready-for-submission drawings in PDF and DWG
• A concise narrative explaining system operation so my GC and I can review and approve before procurement

AdditionallY:
HVAC load calculations and system sizing
Heat pump system design
Ventilation strategy (including whole-house fresh air approach)
Coordination with architectural plans
Title 24 compliance support and documentation
Additional design considerations may include passive cooling strategies and energy efficiency optimization.

Accuracy, code compliance, and energy efficiency are paramount. If you’ve designed high-end residential projects in CA before, you’ll know exactly how precise those Manual J/S/D numbers have to be. Let’s collaborate so this house opens with perfect year-round comfort and minimal energy spend.