Translating Great Designs into
Real-World Performance

We help design teams make smarter decisions about energy, systems, and performance when it matters most. From early concept through construction, we bring deep modeling expertise, code fluency, and real-world engineering insight to guide high-performance design and unlock better outcomes.

We speak engineering - we understand how systems are laid out, sized, and integrated, not just how they are modeled.

We know the code - and the cracks in it. We help shape compliance pathways and know where modeling software hits its limits.

We see the big picture - we balance comfort, cost, carbon, and constructability, not just checking boxes.

Why Teams Trust A2 Efficiency

We go beyond typical efficiency consulting. We guide performance strategy from first sketch to final system, grounded in how buildings really work.

Our Services

High Performance Building Modeling

Simulation-driven design support for energy, comfort, and system optimization

California Title 24 Energy Code Compliance

Deep technical support for California’s energy code, concept through permitting

Planning, Policy & Research

Technical strategy for program design, code development, and market transformation

📐 Types of Projects We Support

CBECC-Com / Res (Title 24)

EnergyPlus / OpenStudio
VE-IES, Radiance, Therm
Custom scripting for automation, batch runs, and parametrics

Who We Work Best With

We’re a good fit for:

Architects and design teams looking for early feedback and performance support
MEP engineers modeling new system types or evaluating aggressive design targets
Owners and sustainability consultants navigating code, compliance, and program goals