About South Florida Ecalcs
South Florida Roots. Central Florida Reach. Statewide Design Support.
South Florida Ecalcs helps AC contractors, architects, builders, owner-builders, and homeowners make better HVAC decisions before construction reaches the permit or installation stage.
We provide HVAC load calculations, equipment-selection support, duct-system design, Florida Energy Code documentation, and coordinated HVAC plans for residential and appropriately scoped light-commercial projects.
Our work begins with the building—not a rule of thumb. We evaluate the plans, construction assemblies, windows, orientation, ventilation requirements, equipment data, and intended use of the space to develop documentation grounded in the actual project.
We serve projects throughout South and Central Florida, with remote HVAC design and documentation support available statewide. Onsite testing and diagnostic services are available depending on project location, scope, and scheduling.
Meet the People Behind the Work
Karen M. Oliver
Director and Founder
Karen brings decades of Florida HVAC design and energy-code experience to every project. Her ability to see how the building envelope, mechanical system, architectural plans, and code requirements affect one another helps identify coordination problems before they become expensive field changes.
She has worked with contractors, architects, builders, and property owners across a wide range of Florida projects. Her focus remains practical: understand the building, calculate what it needs, document the design clearly, and help the project team make informed decisions.
Richard G. Wallen Jr.
Senior HVAC Design Consultant and Systems Architect
Richard draws on more than 25 years of commercial and industrial systems experience along with a decade of residential HVAC design work.
He approaches each project as a connected system. The building envelope, equipment, ductwork, ventilation, exhaust, controls, and occupant expectations must work together—not as isolated parts.
Richard’s role includes HVAC design review, project coordination, systems analysis, technical communication, and helping clients understand the reasoning behind important design decisions.
HVAC Design Is More Than a Load Calculation
A Manual J calculation is important, but it is only one part of a properly coordinated HVAC design.
Equipment selection affects airflow. Airflow affects duct sizing. Duct routing affects architectural space. Windows, insulation, air sealing, ventilation, exhaust, and outdoor-air requirements all influence system performance.
That is why we focus on the critical coordination window between design development and permit submission—when problems can still be identified and resolved on paper.
Our objective is to provide clear, coordinated information that helps the contractor, designer, and property owner move forward with fewer assumptions and fewer preventable surprises.
What We Provide
Our services may include:
- ACCA Manual J residential load calculations
- ACCA Manual S equipment-selection documentation
- ACCA Manual D duct-system design
- Manual N calculations for applicable light-commercial projects
- Florida Energy Code calculations and documentation
- CAD-quality HVAC plans
- Ventilation, exhaust, and makeup-air coordination
- Blower-door and duct-leakage testing
- Thermography and selected building-performance diagnostics
- Existing-plan and preconstruction HVAC design reviews
The exact scope depends on the project, available documentation, construction type, jurisdiction, and services requested.
Why Choose South Florida Ecalcs?
Florida-Specific Experience
Florida heat and humidity require more than generic sizing assumptions. We evaluate the conditions that influence sensible and latent loads, moisture behavior, ventilation, and equipment performance.
Systems-Based Review
We look beyond a single calculation to understand how the building envelope, HVAC equipment, duct system, ventilation, and architectural design interact.
Clear Documentation
Our goal is to provide calculations and plans that contractors, designers, building officials, and property owners can understand and use.
Early Coordination
Identifying missing information and potential conflicts before permit submission or installation can reduce avoidable revisions, delays, and field decisions.
Real People and Practical Support
Your project is reviewed by experienced professionals who understand both the technical requirements and the practical realities of getting HVAC work designed, documented, permitted, and installed.
Start With the Right Information
Whether you are building a new home, renovating an existing property, replacing an HVAC system, or preparing plans for permit review, early coordination can make the entire process easier.
Send us your plans, project location, construction details, and requested services. We will review the available information and help determine the appropriate scope for your project.
When accuracy, efficiency, and compliance matter—South Florida Ecalcs delivers.
📞 Call or email us today at 561-327-7272 Email: hello@southfloridaecalcs.com and let’s make your next project a success!
Request Your Project Review
Tell us what you are building, where the project is located, and what stage it has reached. We will help you identify the calculations, documentation, and coordination support needed for the next step.