Virginia is in IECC Climate Zone 4A (Mixed - Humid). Get accurate Manual J load calculations with official design temperatures and IECC requirements.
Mixed - Humid
Based on Climate Zone 4A (Mixed - Humid), here are typical HVAC equipment specifications for Virginia installations.
Annual Fuel Utilization Efficiency for Virginia furnaces
Seasonal Energy Efficiency Ratio for Virginia AC systems
Virginia's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Virginia building departments require IECC-compliant Manual J calculations. Our tool uses official Virginia climate data.
Right-sized systems based on Virginia climate data reduce energy costs for homeowners and improve your reputation.
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