KY

Manual J Requirements in Kentucky

Is Manual J required in Kentucky?

YESKentucky has adopted 2018 IECC which requires HVAC loads be calculated per ACCA Manual J for new construction and major renovations.

Energy Code
2018 IECC
Climate Zones
4A
Major Cities
Louisville, Lexington, Bowling Green
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Kentucky Energy Code & Manual J

Current Adopted Code

Kentucky has adopted 2018 IECC as the statewide energy code for residential construction.

HVAC sizing per ACCA Manual J
Duct design per ACCA Manual D
Equipment selection per ACCA Manual S

What Kentucky Building Departments Require

  • Manual J load calculation report
  • Equipment sizing documentation
  • Professional-quality PDF format
  • Climate zone and design temp data

Kentucky Climate Zones & Design Temperatures

IECC Climate Zone
4A

Covers the entire state including Louisville and Lexington

Manual J Requirements by Kentucky City

Louisville
Zone 4A
Lexington
Zone 4A
Bowling Green
Zone 4A
Owensboro
Zone 4A
Covington
Zone 4A

How to Get a Manual J Calculation in Kentucky

RECOMMENDED

AutoHVAC (FREE First Report)

  • Upload your Kentucky blueprint
  • AI extracts all building data
  • Get permit-ready report in 60 seconds
  • No credit card required
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Local Kentucky Contractors

  • Turnaround: 3-7 days
  • $Typical cost: $150-400
  • On-site visit possible
  • Local expertise

DIY Software

  • Time: 30+ minutes per calc
  • $Cost: $5-200+/month
  • CoolCalc, Wrightsoft, etc.
  • Requires manual data entry

Kentucky Manual J FAQ

How much does a Manual J calculation cost in Kentucky?

Local Kentucky contractors typically charge $150-400 for Manual J calculations. AutoHVAC offers your first Manual J calculation completely FREE with permit-ready results in 60 seconds — no credit card required.

Is a Manual J calculation required in Kentucky?

Yes. Kentucky follows 2018 IECC which requires heating and cooling loads be calculated per ACCA Manual J for permits on new construction and major HVAC work.

Where can I get a Manual J calculation in Kentucky?

You can get a free Manual J calculation for Kentucky instantly at AutoHVAC — upload your blueprint and receive a permit-ready report in 60 seconds. Alternatively, local Kentucky HVAC contractors charge $150-400 with 3-7 day turnaround, or you can use DIY software like Wrightsoft or CoolCalc ($5-200+/month).

What climate zone is Kentucky in for Manual J?

Kentucky includes IECC climate zone 4A. This zone covers the entire state including Louisville, Lexington, Bowling Green. Climate zone data determines design temperatures and insulation requirements used in Manual J calculations.

Get Your Free Kentucky Manual J Calculation

Join thousands of Kentucky contractors who use AutoHVAC for instant, permit-ready load calculations.

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No credit card required • Results in 60 seconds