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01 03
HVAC Load & Energy Calculations

Right-sized HVAC systems from the first calculation.

Manual J, Manual N, and Manual S load calculations with EnergyGauge compliance for Florida's energy code — so equipment is neither oversized nor undersized.

HVAC Load & Energy Calcs Send Plans for Review
Electrical Load & Panel Schedule

A panel schedule that matches the real electrical load.

NEC 2020 service and feeder load calculations with a clear panel distribution and schedule — ready for permit review.

Electrical Load & Panel Schedule Send Plans for Review
Structural Engineering & Layout

Structural layout that is clear and buildable.

Structural layout engineering for residential and light commercial work — clear framing plans, member sizing, and coordination-ready drawings.

Structural Engineering & Layout Send Plans for Review
Manual J / N / SACCA Load-Calculation Method
NEC 2020Electrical Load & Panel Schedule
FloridaEnergy Code & Central Florida Service
Three services. One clear engineering path.

What Avidan does.

Avidan is a focused engineering firm. We do three things — and we do them so they pass review the first time.

Service 01

HVAC Load & Energy Calculations

Manual J (residential), Manual N / ANSI/ASHRAE/ACCA Std 183 (commercial), and Manual S selection — with EnergyGauge compliance for Florida.

HVAC Load & Energy Calcs
Service 02

Electrical Load & Panel Schedule

NEC 2020 service and feeder load calculations, panel distribution, and a complete panel schedule — ready for permit review.

Electrical Load & Panel Schedule
Service 03

Structural Engineering & Layout

Structural layout engineering for residential and light commercial work — clear framing plans, member sizing, and buildable drawings.

Structural Engineering & Layout
How a calculation package works

Three steps from plans to permit-ready calculations.

Every engagement follows the same disciplined path — no fixed scope, no surprises.

01

Submit

Send your plans and project information. We confirm scope and what's needed for review.

02

Calculate

We run the load, schedule, or layout per the applicable code and method — Manual J/N/S, NEC 2020, or structural design.

03

Deliver

You receive a clean, complete package prepared for permit review and coordination.

About Avidan

One firm, three focused services.

Avidan Design is an Orlando engineering firm focused on HVAC load and energy calculations, electrical load and panel schedules, and structural layout engineering.

  • Central Florida focus — Orlando and surrounding counties
  • Verified calculation methods — Manual J/N/S, EnergyGauge, NEC 2020
  • Residential and light commercial work
Why Avidan See All Services
Service area

Built for Central Florida projects.

We work across Orlando and the surrounding counties, with experience in the jurisdictions where our clients build.

Orlando

City of Orlando projects

Orange County

Municipal + unincorporated

Seminole County

Central Florida projects

Osceola County

Kissimmee, St. Cloud

Volusia County

Deltona, DeLand, Daytona

Central Florida

Regional coverage

Have plans that need a load, schedule, or structural layout? Send them over.

Start a Project Orlando · Central Florida
Resource Library

Technical resources for better project decisions.

Focused guides on load calculations, panel schedules, structural layout, and the review process — written to help you prepare a cleaner submittal.

Explore Avidan resources
Direct line to management

Have feedback? We want to hear it.

Whether it's a compliment, a concern, or a suggestion — this goes directly to our management team, not a chatbot.

Start a Project

Send your plans and scope. We'll run the right calculation.

Avidan runs HVAC load and energy calculations, electrical load and panel schedules, and structural layout engineering for Central Florida projects — clean, complete, and ready for review.

Manual J / N / S & EnergyGaugeNEC 2020 load & panel scheduleStructural layout engineering
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Best for residential and light commercial projects needing load, schedule, or structural work.