HVAC Permits in Iowa

Complete guide to HVAC permit requirements, energy code compliance, and building department information for contractors working in Iowa.

97
Major Cities
956
ZIP Codes
2021 IECC
Energy Code
2
Climate Zones

Iowa Energy Code Requirements

Understanding the energy efficiency standards that govern HVAC installations in Iowa

Current Energy Code

2021 IECC

Current Standard

Statewide energy efficiency requirements for HVAC systems, equipment, and building envelope performance.

Common Requirements

Manual J load calculations
Equipment efficiency ratings
Duct system design
Building envelope compliance

Important Note

Local jurisdictions may have additional requirements beyond the state energy code. Always verify specific compliance needs with your local building department.

HVAC Permits by City in Iowa

Des Moines

Zone 5A

Polk County • 63 ZIP codes

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Woodbury

Zone 5A

Woodbury County • 22 ZIP codes

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Scott

Zone 5A

Scott County • 19 ZIP codes

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Pottawattamie

Zone 5A

Pottawattamie County • 17 ZIP codes

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Linn

Zone 5A

Linn County • 16 ZIP codes

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Dallas

Zone 5A

Dallas County • 15 ZIP codes

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Story

Zone 5A

Story County • 15 ZIP codes

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Dubuque

Zone 5A

Dubuque County • 15 ZIP codes

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Benton

Zone 5A

Benton County • 15 ZIP codes

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Cedar Rapids

Zone 5A

Linn County • 14 ZIP codes

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Keokuk

Zone 5A

Keokuk County • 14 ZIP codes

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Webster

Zone 6A

Webster County • 14 ZIP codes

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Clinton

Zone 5A

Clinton County • 14 ZIP codes

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Warren

Zone 5A

Warren County • 13 ZIP codes

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Marshall

Zone 5A

Marshall County • 13 ZIP codes

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Tama

Zone 5A

Tama County • 13 ZIP codes

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Fayette

Zone 6A

Fayette County • 13 ZIP codes

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Sioux

Zone 6A

Sioux County • 13 ZIP codes

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Jackson

Zone 5A

Jackson County • 13 ZIP codes

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Carroll

Zone 5A

Carroll County • 12 ZIP codes

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Kossuth

Zone 6A

Kossuth County • 12 ZIP codes

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Black Hawk

Zone 6A

Black Hawk County • 12 ZIP codes

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Iowa

Zone 5A

Iowa County • 12 ZIP codes

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Johnson

Zone 5A

Johnson County • 12 ZIP codes

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Hardin

Zone 6A

Hardin County • 11 ZIP codes

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Jasper

Zone 5A

Jasper County • 11 ZIP codes

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Marion

Zone 5A

Marion County • 11 ZIP codes

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Humboldt

Zone 6A

Humboldt County • 11 ZIP codes

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Butler

Zone 6A

Butler County • 11 ZIP codes

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Buchanan

Zone 6A

Buchanan County • 11 ZIP codes

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Delaware

Zone 6A

Delaware County • 10 ZIP codes

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Crawford

Zone 6A

Crawford County • 10 ZIP codes

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Shelby

Zone 5A

Shelby County • 10 ZIP codes

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Harrison

Zone 5A

Harrison County • 10 ZIP codes

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Van Buren

Zone 5A

Van Buren County • 10 ZIP codes

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Guthrie

Zone 5A

Guthrie County • 9 ZIP codes

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Mahaska

Zone 5A

Mahaska County • 9 ZIP codes

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Hamilton

Zone 6A

Hamilton County • 9 ZIP codes

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Cerro Gordo

Zone 6A

Cerro Gordo County • 9 ZIP codes

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Buena Vista

Zone 6A

Buena Vista County • 9 ZIP codes

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Sac

Zone 6A

Sac County • 9 ZIP codes

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Calhoun

Zone 6A

Calhoun County • 9 ZIP codes

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Plymouth

Zone 6A

Plymouth County • 9 ZIP codes

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Monona

Zone 5A

Monona County • 9 ZIP codes

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Fremont

Zone 5A

Fremont County • 9 ZIP codes

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Jones

Zone 5A

Jones County • 9 ZIP codes

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Appanoose

Zone 5A

Appanoose County • 9 ZIP codes

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Lee

Zone 5A

Lee County • 9 ZIP codes

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Henry

Zone 5A

Henry County • 9 ZIP codes

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Muscatine

Zone 5A

Muscatine County • 9 ZIP codes

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Wayne

Zone 5A

Wayne County • 8 ZIP codes

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Cass

Zone 5A

Cass County • 8 ZIP codes

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Madison

Zone 5A

Madison County • 8 ZIP codes

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Franklin

Zone 6A

Franklin County • 8 ZIP codes

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Greene

Zone 5A

Greene County • 8 ZIP codes

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Decatur

Zone 5A

Decatur County • 8 ZIP codes

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Wright

Zone 6A

Wright County • 8 ZIP codes

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Poweshiek

Zone 5A

Poweshiek County • 8 ZIP codes

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Hancock

Zone 6A

Hancock County • 8 ZIP codes

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Mitchell

Zone 6A

Mitchell County • 8 ZIP codes

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Palo Alto

Zone 6A

Palo Alto County • 8 ZIP codes

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Pocahontas

Zone 6A

Pocahontas County • 8 ZIP codes

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Grundy

Zone 6A

Grundy County • 8 ZIP codes

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Bremer

Zone 6A

Bremer County • 8 ZIP codes

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Cherokee

Zone 6A

Cherokee County • 8 ZIP codes

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Clayton

Zone 6A

Clayton County • 8 ZIP codes

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Lyon

Zone 6A

Lyon County • 8 ZIP codes

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Mills

Zone 5A

Mills County • 8 ZIP codes

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Page

Zone 5A

Page County • 8 ZIP codes

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Washington

Zone 5A

Washington County • 8 ZIP codes

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Cedar

Zone 5A

Cedar County • 8 ZIP codes

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Ringgold

Zone 5A

Ringgold County • 7 ZIP codes

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Winnebago

Zone 6A

Winnebago County • 7 ZIP codes

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Worth

Zone 6A

Worth County • 7 ZIP codes

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Taylor

Zone 5A

Taylor County • 7 ZIP codes

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Dickinson

Zone 6A

Dickinson County • 7 ZIP codes

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Winneshiek

Zone 6A

Winneshiek County • 7 ZIP codes

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Allamakee

Zone 6A

Allamakee County • 7 ZIP codes

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Wapello

Zone 5A

Wapello County • 7 ZIP codes

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Louisa

Zone 5A

Louisa County • 7 ZIP codes

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Audubon

Zone 5A

Audubon County • 6 ZIP codes

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Boone

Zone 5A

Boone County • 6 ZIP codes

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Floyd

Zone 6A

Floyd County • 6 ZIP codes

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Emmet

Zone 6A

Emmet County • 6 ZIP codes

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Chickasaw

Zone 6A

Chickasaw County • 6 ZIP codes

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Adair

Zone 5A

Adair County • 5 ZIP codes

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Lucas

Zone 5A

Lucas County • 5 ZIP codes

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Union

Zone 5A

Union County • 5 ZIP codes

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Howard

Zone 6A

Howard County • 5 ZIP codes

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Montgomery

Zone 5A

Montgomery County • 5 ZIP codes

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Ida

Zone 6A

Ida County • 5 ZIP codes

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Osceola

Zone 6A

Osceola County • 5 ZIP codes

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Jefferson

Zone 5A

Jefferson County • 5 ZIP codes

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Davis

Zone 5A

Davis County • 4 ZIP codes

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Monroe

Zone 5A

Monroe County • 3 ZIP codes

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Clarke

Zone 5A

Clarke County • 3 ZIP codes

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Adams

Zone 5A

Adams County • 3 ZIP codes

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Need Professional Load Calculations?

Ensure your HVAC system meets all code requirements in Iowa

✅ Manual J load calculation
✅ Equipment sizing recommendations
✅ Energy code compliance verification
✅ Professional report ready for permits
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Frequently Asked Questions

Everything you need to know about HVAC permits and energy code compliance in Iowa

1What energy code does Iowa follow?

Iowa follows the 2021 IECC for energy efficiency requirements. This includes specific standards for HVAC equipment efficiency, duct design, and building envelope performance.

2Are Manual J calculations required in Iowa?

Most jurisdictions in Iowa require Manual J load calculations for proper HVAC system sizing. Our free load calculation tool can generate the professional reports you need for permits.

3How long does it take to get HVAC permits in Iowa?

Permit processing times vary by jurisdiction, typically ranging from 1-3 weeks. Having complete documentation including load calculations can speed up the process. Check with your local building department for specific timeframes.

4Do I need different permits for different types of HVAC work?

Yes, permit requirements vary based on the scope of work. New installations typically require mechanical permits, while simple repairs may not need permits. Replacements usually require permits if there are changes to the system capacity or ductwork.

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Need Climate Zone Data for Iowa?

Get official IECC climate zone information, design temperatures, and R-value requirements for accurate Manual J calculations in Iowa.

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