Iowa spans 2 IECC climate zones. Find your exact zone, design temperatures, and get free Manual J load calculations for any Iowa location.
Cool - Humid
Cold - Humid
Based on Climate Zone 5A (Cool - Humid), here are typical HVAC equipment specifications for Iowa installations.
Annual Fuel Utilization Efficiency for Iowa furnaces
Seasonal Energy Efficiency Ratio for Iowa AC systems
Iowa's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Iowa building departments require IECC-compliant Manual J calculations. Our tool uses official Iowa climate data.
Right-sized systems based on Iowa climate data reduce energy costs for homeowners and improve your reputation.
Upload your Iowa blueprint and get a professional Manual J load calculation with official climate zone data. First report is FREE.
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Get detailed climate zone information for major cities
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