Hawaii is in IECC Climate Zone 1A (Very Hot - Humid). Get accurate Manual J load calculations with official design temperatures and IECC requirements.
Very Hot - Humid
Based on Climate Zone 1A (Very Hot - Humid), here are typical HVAC equipment specifications for Hawaii installations.
Annual Fuel Utilization Efficiency for Hawaii furnaces
Seasonal Energy Efficiency Ratio for Hawaii AC systems
Hawaii's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Hawaii building departments require IECC-compliant Manual J calculations. Our tool uses official Hawaii climate data.
Right-sized systems based on Hawaii climate data reduce energy costs for homeowners and improve your reputation.
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