Florida HVAC Load Calculations | Manual J, D, S | ProCalcs

Florida HVAC Load Calculations That Actually Get Approved

Stop Waiting Days for Quotes. Stop Resubmitting Failed Calcs.

Live answers in 15 minutes. Florida Building Code-compliant calculations that pass inspection the first time. No delays. No rejections. No excuses.

The Two Problems Florida Professionals Face Every Day

❌ Slow Response Times

You email for an HVAC load calculation quote. No response for 3 days. You call. Voicemail. You call back. Still voicemail. Your project deadline is approaching and you're STUCK waiting for someone to just answer you.

βœ“ ProCalcs answers: Emails in 15 minutes. Live phone (no voicemail). Same-day quotes.

❌ Failed Permit Submissions

You paid for Manual J calculations. You submitted them to the building department. They send them back: wrong window values, wrong insulation specs, doesn't match your plans. Now you're delayed, your client is angry, and your reputation takes a hit.

βœ“ ProCalcs gets it right: We verify actual product specs. We match your plans. First-time approval.

We Answer Live. We Respond Fast. We Get It Right.

When your construction project is on a deadline, you can't wait days for a callback or risk permit rejections. ProCalcs delivers speed, accuracy, and Florida Building Code compliance every single time.

"Why Do You Ask So Many Questions About My Project?"

Because we've seen what happens when HVAC calculation companies don't ask the right questions.

Other calculation services use generic window values. They guess at insulation specs. They assume standard construction. Then your plans get rejected by Miami-Dade, Broward, or your local building department because the calculations don't match reality.

We ask about:
  • Actual window SHGC and U-factors (not generic assumptions)
  • Real insulation type and R-values (spray foam vs batt makes a difference)
  • The products you're actually installing (not what "usually" gets installed)
  • Florida-specific construction details (climate zones, hurricane requirements, coastal considerations)

Yes, it takes 5 extra minutes to provide this information.

But it saves you days of permit delays and expensive resubmittal fees.

We don't guess. We ask. We verify. We get your HVAC calculations right.

That's why architects, builders, and HVAC contractors across Floridaβ€”from Jacksonville to Miami, Tampa to Orlandoβ€”choose ProCalcs when accuracy matters and deadlines are tight.

Florida state outline

Florida-Specific HVAC Calculation Expertise

Florida Building Code Compliance

We stay current with the 2023 Florida Building Code, 8th Edition (effective December 31, 2023). All Manual J, Manual D, and Manual S calculations comply with Florida's energy conservation requirements and mechanical code standards.

View Official Florida Building Code β†’

Climate Zones for HVAC

Florida spans two IECC climate zones:

Climate Zone 1 (Hot-Humid): Miami-Dade, Broward, Palm Beach, and select southern counties

Climate Zone 2 (Hot-Humid): Remainder of the state including Tampa, Orlando, Jacksonville

We apply the correct climate zone requirements for your specific county.

Hurricane & Coastal Requirements

Florida's unique coastal and hurricane requirements mean HVAC load calculations must account for:

  • Impact-rated fenestration requirements
  • High-Velocity Hurricane Zone (HVHZ) standards
  • Coastal flood zone regulations
  • Wind load considerations

We understand these requirements and factor them into every calculation.

Energy Performance Requirements

Florida's 8th Edition code requires residential buildings to achieve an Energy Performance Index of 95 or better (5% more efficient than previous code).

We ensure your HVAC project meets these enhanced energy efficiency standards.

Our Florida HVAC Calculation Services

Manual J Load Calculations

Accurate heating and cooling load calculations for Florida climate zones and building codes

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Manual D Duct Design

Proper duct sizing for high humidity and cooling demands

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Manual S Equipment Selection

Right-sized HVAC equipment for your climate and energy requirements

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Manual N Commercial Calculations

Small to medium commercial building load calculations

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Energy Calculations

Florida energy code compliance and Energy Performance Index (EPI) calculations

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For Architects

Accurate HVAC calculations for code compliance and plan reviews

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For Builders

Fast, accurate calcs that keep your construction projects on schedule

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For HVAC Contractors

Professional calculations that help you sell better HVAC systems

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Find Your County Building Department

Enter your Florida zip code to find your county's building department and specific HVAC requirements.

Need help understanding your county's specific requirements?

Contact Us for Assistance

We Serve All Florida Counties for HVAC Calculations

ProCalcs provides professional HVAC load calculations throughout every county in Florida. Whether you're in a major metro area or a smaller county, we deliver the same fast, accurate, code-compliant service. Below are quick links to building departments in some of Florida's most active construction counties:

Don't see your county? Contact us and we'll help you find the information you need.

Ready to Get Started with Your HVAC Load Calculations?

Stop wasting time with companies that don't answer. Stop risking permit rejections. Get accurate, Florida Building Code-compliant calculations with same-day quotes and 15-minute response times.

Serving Florida architects, builders, HVAC contractors, and homeowners since 2015
Fast. Accurate. Professional. Every single time.