EnergyCheck FL

by Pineland Engineering

Check prescriptive Florida Energy Code (FBC 7th Ed. / IECC 2021) compliance for all 67 counties. Get a component-by-component compliance summary and download a branded PDF of your results.

Florida County *

Conditioned Area (sq ft) *

Ceiling / Attic R-Value *

Wall Cavity R-Value *

Slab Perimeter R-Value *

Window U-Factor *

Window SHGC *

Total Window Area (sq ft) *

Gross Wall Area (sq ft) *

Total exterior wall area including windows (perimeter × floor height)

Air Infiltration (ACH50) *

Air changes per hour at 50 Pa. Typical new construction: 3–5 ACH.

Compliance Results

Fill out the form and click Check Compliance.

Florida Energy Code Requirements by Climate Zone

FBC 7th Ed. / IECC 2021 Table R402.1.2 — Residential buildings

Zone	Region	Ceiling	Wall	Slab	U-factor	SHGC	ACH50
Zone 1	South FL	R-30	R-13	—	≤0.65	≤0.25	≤5
Zone 2	Central FL	R-38	R-13	—	≤0.4	≤0.25	≤5
Zone 3	North FL	R-38	R-13	R-10	≤0.35	≤0.25	≤3

Florida Energy Code Compliance Explained

The Florida Energy Code (FBC 7th Ed. / IECC 2021) divides the state into three IECC climate zones. Zone 1 covers South Florida (Miami-Dade, Monroe, Broward, Palm Beach, and southwest counties), Zone 2 covers Central Florida, and Zone 3 covers North Florida.

The prescriptive path (Section R402) is the most common method for demonstrating energy code compliance in residential construction. It sets minimum R-values for ceiling and wall insulation, maximum U-factor and SHGC for windows, and an air infiltration limit measured by a blower door test.

The SHGC (Solar Heat Gain Coefficient) is particularly critical in Florida. A low SHGC (≤ 0.25 in all zones) controls solar heat gain through windows, which represents a major portion of the cooling load in Florida's climate. Double-pane low-e glass is the standard solution.

When Do You Need Stamped Energy Calculations?

Florida building departments require energy compliance documentation stamped by a licensed Florida Professional Engineer (PE) for most new residential and commercial construction projects. This documentation must demonstrate the building meets the FBC Energy Code via the prescriptive, performance (REScheck), or ERI path.

EnergyCheck FL is a free reference tool for quickly checking whether your design meets prescriptive requirements. For stamped, permit-ready documentation, Pineland Engineering prepares complete stamped energy calculations for residential and commercial projects statewide.

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Frequently Asked Questions

What is the Florida Energy Code (FBC)?

The Florida Energy Code is the 7th Edition Florida Building Code, Energy Conservation section, based on IECC 2021. It sets minimum energy efficiency requirements for new and renovated residential and commercial buildings statewide.

What are the three Florida climate zones?

Florida has three IECC climate zones: Zone 1 (South Florida — Miami-Dade, Monroe, Broward, Palm Beach, Collier, Lee, and adjacent counties), Zone 2 (Central Florida — Tampa Bay, Orlando, Space Coast, and most of the central state), and Zone 3 (North Florida — Jacksonville, Tallahassee, Panhandle).

Do I need an engineer for energy calculations in Florida?

Yes. For most new construction projects in Florida, building departments require energy compliance documentation stamped by a licensed Florida Professional Engineer (PE). Pineland Engineering prepares these stamped documents for projects statewide.

What is the difference between the prescriptive path and the performance path?

The prescriptive path (Section R402) checks each building component individually against minimum/maximum values. The performance path (REScheck or ERI) allows trade-offs between components as long as the building's total energy performance meets a reference building. The prescriptive path is simpler; the performance path offers more design flexibility.

What window SHGC is required in Florida?

All three Florida climate zones require a maximum window SHGC of 0.25. This is more stringent than many other states because Florida's intense solar radiation makes solar heat gain through windows one of the largest contributors to cooling loads.

Is a blower door test required in Florida?

Yes. The Florida Energy Code requires a blower door test to verify air infiltration at 50 Pa. The maximum allowed is 5.0 ACH50 for Climate Zones 1 and 2, and 3.0 ACH50 for Climate Zone 3. The test must be performed by a certified rater and results submitted to the building department.