Guides to help you understand HVAC design.
Written for builders, contractors, architects, and homeowners — not just engineers. Clear explanations of the calculations, codes, and process behind a properly designed mechanical system.
What Is a Manual J Load Calculation?
A Manual J is the industry-standard method for calculating how much heating and cooling a home actually needs. Here's what it is and why it matters for your Florida project.
What Is Manual S Equipment Selection?
Manual S turns your Manual J loads into the right equipment choice. It's how you avoid the most common — and most expensive — HVAC sizing mistake.
What Is Manual D Duct Design?
Manual D sizes and routes your ductwork for balanced, quiet airflow. Done right, every room gets the conditioning it needs.
Why Proper HVAC Sizing Matters in Florida
Oversized equipment is one of the most common HVAC problems in Florida homes. Here's why right-sizing matters for comfort, humidity, and cost.
Do I Need Mechanical Plans for My Florida Home?
Not every project needs a full mechanical plan set — but many do. Here's how to tell whether your project requires professional mechanical plans.
What Is COMcheck?
COMcheck is a compliance tool used to show a commercial building meets energy code. Here's what it covers and when you might need it.
What Are Florida Energy Calculations?
Florida requires energy code calculations for most permitted projects. Here's what they are, why they're required, and how we help.
How Does the HVAC Design Process Work for a Custom Home?
From your architectural plans to a permit-ready mechanical plan set — here's how the HVAC design process works for a custom home.
What Information Does an Engineer Need to Design an HVAC System?
To design your HVAC system accurately, your engineer needs specific information. Here's the checklist that helps us give you an accurate quote.
Have a question about your project?
The fastest way to get a clear answer is to talk to the engineer directly.