CONTRACTOR SERVICE | 48-HOUR TURNAROUND — SEE TERMS | 5-STAR RATED | 2021 IECC COMPLIANT | 120+ YEARS COMBINED HVAC EXPERIENCE
HVAC Calculation Services for Georgia Contractors
Manual J • Manual D • Manual S • Manual Q • Manual N • COMCheck — You Focus on the Install. We Handle the Calculations.
Get Your Permit-Ready Package. | Nationwide Service
Permit-ready residential and commercial HVAC calculations for Georgia contractors; built around the correct climate zone, the right latent and sensible load split, and the local code requirements for your specific Georgia county. Contractor-Dedicated Service, 48-hour turnaround, 24-hour rush available. Nationwide.
ACCA-APPROVED | 2021 IECC COMPLIANT | 48-HOUR TURNAROUND | CONTRACTOR-DEDICATED SERVICE | NATIONWIDE.
GEORGIA MANUAL J LOAD CALCULATION FOR ATLANTA HVAC CONTRACTOR
Click to download a sample Manual J load calculation prepared for a metro Atlanta residential project.
THE QUESTION IS NOT WHY, BUT WHY NOT?
Georgia Has 159 Counties — More Than Any Other State East of the Mississippi. Every County Can Have Different Local Requirements. We Know All of Them.
Every report is permit-ready and delivered straight to your inbox, usually within 48 hours, anywhere in Georgia or nationwide.
Metro Atlanta and the surrounding suburbs are among the fastest-growing residential and commercial construction markets in the country, and HVAC contractors across Georgia are busier than ever. Georgia also has 159 counties — more than any other state east of the Mississippi River — and each one can carry different local amendments to the state minimum code, different building department submission formats, and different interpretation of the Georgia State Minimum Standard Energy Code.
Our team produces ACCA-approved Manual J load calculations, Manual D duct designs, Manual N commercial load calculations, and Manual Q commercial duct designs formatted to the correct climate zone and local code for your specific Georgia project address. You focus on the install. We handle the calculations. Your clients get a permit-ready package within 48 hours, as part of our nationwide service covering all 50 states.
WHY GEORGIA HVAC CONTRACTORS OUTSOURCE THEIR CALCULATIONS!
WORK SMARTER.
You focus on the install. We handle the calculations. Your Georgia clients get a permit-ready package and nobody on your team had to learn new software, look up county-level code amendments, or spend three hours on a load calculation. Manual J, Manual D, Manual N, and Manual Q, all handled by our nationwide team.
INCREASE EFFICIENCY.
Load calculations in Georgia require accurate latent and sensible load splits, county-specific code awareness, and correct climate zone data across three distinct IECC zones. We use Wrightsoft, the ACCA-approved industry standard for both residential and commercial projects — so you do not carry the software overhead or the code research burden.
GROW YOUR BUSINESS.
The contractors who scale fastest are the ones who stop doing everything themselves. When you treat our team as your dedicated calculations department, you free up capacity to take on more Georgia jobs, close more bids, and grow your client base, without adding a single person to your payroll. That is not an overhead cost. That is a growth strategy.
GEORGIA SPANS THREE CLIMATE ZONES.
Your County Determines Which One Governs Your Project.
Georgia enforces the Georgia State Minimum Standard Energy Code, administered by the Georgia Department of Community Affairs (DCA), which adopts the 2021 IECC with Georgia-specific amendments. The DCA oversees code adoption statewide, but Georgia’s 159 individual counties and municipalities can (and frequently do ) adopt additional local amendments that go beyond the state minimum. Fulton, Gwinnett, Cobb, and DeKalb counties in the Atlanta metro area have adopted enhanced energy efficiency requirements that exceed what the state baseline demands.
Georgia also spans three distinct IECC climate zones, and the correct zone for your project is determined by county — not by city name or general region:
Zone 2A (Hot-Humid) — South Georgia: Valdosta, Brunswick, Waycross, Tifton, Bainbridge, Thomasville, and all counties in the southern coastal plain. This is Georgia’s most demanding cooling zone, with extremely high sensible and latent loads. Dehumidification is a critical design requirement here, and a Manual J that does not properly split the latent and sensible components will produce an oversized system that fails to control humidity, one of the most common comfort complaints in South Georgia.
Zone 3A (Mixed-Humid) — Central Georgia and the Atlanta Metro: Atlanta, Savannah, Augusta, Macon, Columbus, and the majority of the state’s population and construction activity. Both heating and cooling loads matter in Zone 3A. The Atlanta metro’s rapid growth ( Fulton, Gwinnett, Cobb, DeKalb, Cherokee, Forsyth, and surrounding counties) makes this the most active permit market in the state.
Zone 4A (Mixed-Humid) — North Georgia and the Blue Ridge Mountains: Blairsville, Dahlonega, Blue Ridge, Ellijay, and mountain communities. Elevation effects in the North Georgia mountains produce meaningfully colder winter design temperatures than the Atlanta metro just 60 miles south. A Manual J sized on central Georgia assumptions applied to a mountain project will produce an undersized heating system.
For commercial projects across Georgia, COMCheck energy compliance documentation is required alongside Manual N commercial load calculations and Manual Q commercial duct designs. All delivered within 48 hours, as part of our nationwide service.
RESIDENTIAL HVAC CALCULATIONS FOR GEORGIA CONTRACTORS!
GEORGIA MANUAL D
AC DUCT DESIGN SERVICE
FROM $259
Complete trunk and branch duct layout, register sizing, and static pressure report calibrated to your Georgia climate zone and local DCA energy code requirements.
GEORGIA MANUAL J
HEAT LOAD CALCULATION
FROM $109
Room-by-room or block-load heating and cooling load, ACCA 8th Edition compliant. Built around your exact Georgia climate zone with accurate latent and sensible load splits for proper dehumidification sizing.
GEORGIA MANUAL S
EQUIPMENT SIZING
FROM $109
Confirms selected equipment matches your Manual J results, including proper dehumidification capacity verification for Georgia’s high-humidity climate zones.
COMMERCIAL HVAC CALCULATIONS FOR GEORGIA CONTRACTORS!
GEORGIA MANUAL Q
COMMERCIAL DUCT DESIGN
FROM $299
Trunk and branch commercial duct layout, register sizing, and static pressure report for Georgia commercial buildings across all three climate zones.
GEORGIA MANUAL N
COMMERCIAL HEAT LOAD CALC
FROM $299
Whole-building commercial heat load calculation for Georgia light commercial projects up to 15 tons, with accurate latent and sensible splits for Georgia’s humidity-driven climate.
GEORGIA RESCHECK / COMCHECK
$199
Residential and commercial energy code compliance documentation accepted by Georgia building departments across all 159 counties.
MANUAL D DUCT DESIGN FOR GEORGIA HOT HUMID CLIMATE
Click to download Manual D duct layout designed for Georgia’s hot-humid climate zone with accurate latent load splits.
HERE IS HOW OUR GEORGIA HVAC CALCULATIONS SERVICE WORKS
You Focus on the Install. We Handle the Calculations.
From Atlanta to Savannah to the Blue Ridge Mountains, your permit-ready reports land in your inbox within 48 hours. No software to learn. No county code lookups. No latent load calculations to run.
Just results!
HVAC Calculation Services Across Georgia
Nationwide service — delivered to your inbox from Atlanta to Savannah to the mountains.
Our nationwide remote service means there are no geographic limitations. We support licensed HVAC contractors and general contractors across all 159 Georgia counties, including these markets:
- Atlanta
- Augusta
- Columbus
- Sandy Springs
- Savannah
- Athens
- Macon
- Roswell
- Albany
- Marietta
No matter which Georgia building department is reviewing your permit, we will make sure your Manual J, Manual D, and Manual S calculations (and your Manual N, Manual Q, and COMCheck for commercial projects) are formatted to meet their exact requirements. And if your work takes you out of state, our nationwide team covers all 50 states with the same 48-hour turnaround.
We Know Georgia's Building Departments
Permit-ready reports accepted across all 159 Georgia counties — from the Atlanta metro to the coast.
Our team has produced permit packages for building departments across Georgia. Below are direct links to the most active permitting portals in the state. If your county is not listed, call us at 800-810-3280.
What Contractors Are Saying
Like having a full engineering team on call.
Rich A., HVAC Contractor
Professional, diligent, and efficient every time.
Jonathan K., Engineer
Courteous, professional, and rapid service.
Javier J., Contractor
PERMIT-READY GEORGIA MANUAL J AND HVAC CALCULATIONS FOR CONTRACTORS — NATIONWIDE SERVICE
Delivered to Georgia HVAC contractors across all 159 counties and nationwide.
GEORGIA CONTRACTOR FAQ
What energy code does Georgia enforce and who administers it?
Georgia enforces the Georgia State Minimum Standard Energy Code, based on the 2021 IECC with Georgia-specific amendments. The Georgia Department of Community Affairs (DCA) administers the state construction codes. Individual counties and municipalities can adopt additional local amendments beyond the state minimum, and several Atlanta metro counties have done exactly that.
What climate zone is Atlanta in? What about Savannah and the North Georgia mountains?
Atlanta and the Atlanta metro area (Fulton, Gwinnett, Cobb, DeKalb, Cherokee, Forsyth, and surrounding counties) fall in Zone 3A (Mixed-Humid). Savannah and most of coastal and central Georgia also fall in Zone 3A. South Georgia counties including Valdosta, Brunswick, and Waycross are in Zone 2A (Hot-Humid). The North Georgia mountains (Blairsville, Dahlonega, Blue Ridge) are in Zone 4A (Mixed-Humid), with colder winter design temperatures due to elevation.
Why is the latent and sensible load split so important for Georgia projects?
Georgia’s hot-humid climate, particularly in Zones 2A and 3A, produces significant latent heat gains from moisture in the air. A Manual J that calculates only total cooling load without properly splitting it into sensible and latent components will produce equipment that is oversized in capacity but undersized in dehumidification ability. This is one of the most common causes of humidity complaints and mold issues in Georgia homes, and it starts with an inaccurate load calculation.
Do Fulton, Gwinnett, Cobb, and DeKalb counties have additional energy requirements?
Yes. These Atlanta metro counties have adopted enhanced local energy efficiency amendments that go beyond the Georgia state minimum. Our team is current on these county-level requirements and formats every report to meet the building department standards for your specific jurisdiction.
Do you handle commercial HVAC calculations in Georgia?
Yes. We provide Manual N commercial load calculations, Manual Q commercial duct design, and COMCheck energy compliance documentation for light commercial projects throughout Georgia, including the Atlanta metro and all 159 counties statewide.
What is your turnaround time for a Georgia project?
Standard turnaround is 48 hours from receipt of complete project information. A 24-hour rush option is available for time-sensitive permits. Call 800-810-3280 to confirm availability.
Can you handle high-volume orders for production builders in the Atlanta metro?
Yes. We work with both individual HVAC contractors and high-volume production builders across the Atlanta metro and statewide. Contact us to discuss volume arrangements.
Do you serve Georgia contractors who also work in other states?
Absolutely. Georgia is one market within our full nationwide service. We deliver permit-ready HVAC calculations to contractors in all 50 states with the same 48-hour standard turnaround. If your work takes you outside Georgia, we have you covered.
Is this service available to Georgia homeowners directly?
This service is built specifically for licensed HVAC contractors and general contractors. Georgia homeowners ordering without a contractor should visit ManualJCalculator.com.
