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Manual J Requirements by State

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What is Manual J?

Complete guide to HVAC load calculations

Manual J Cost Guide

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Select Your State

AL
Alabama
AK
Alaska
AZ
Arizona
AR
Arkansas
CA
California
CO
Colorado
CT
Connecticut
DE
Delaware
DC
District of Columbia
FL
Florida
GA
Georgia
HI
Hawaii
ID
Idaho
IL
Illinois
IN
Indiana
IA
Iowa
KS
Kansas
KY
Kentucky
LA
Louisiana
ME
Maine
MD
Maryland
MA
Massachusetts
MI
Michigan
MN
Minnesota
MS
Mississippi
MO
Missouri
MT
Montana
NE
Nebraska
NV
Nevada
NH
New Hampshire
NJ
New Jersey
NM
New Mexico
NY
New York
NC
North Carolina
ND
North Dakota
OH
Ohio
OK
Oklahoma
OR
Oregon
PA
Pennsylvania
RI
Rhode Island
SC
South Carolina
SD
South Dakota
TN
Tennessee
TX
Texas
UT
Utah
VT
Vermont
VA
Virginia
WA
Washington
WV
West Virginia
WI
Wisconsin
WY
Wyoming

Why Manual J Requirements Matter

Code Compliance

IRC M1401.3 requires HVAC loads be calculated per ACCA Manual J. Most states have adopted this requirement for permits.

Proper Sizing

Avoid oversized or undersized equipment that causes comfort issues, humidity problems, and wasted energy.

Cost Savings

Right-sized equipment saves $1,000+ on installation and 15-30% on energy bills compared to wrong-sized systems.

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