Colorado spans 3 IECC climate zones. Find your exact zone, design temperatures, and get free Manual J load calculations for any Colorado location.
Mixed - Dry
Cool - Dry
Cold - Dry
Based on Climate Zone 4B (Mixed - Dry), here are typical HVAC equipment specifications for Colorado installations.
Annual Fuel Utilization Efficiency for Colorado furnaces
Seasonal Energy Efficiency Ratio for Colorado AC systems
Colorado's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Colorado building departments require IECC-compliant Manual J calculations. Our tool uses official Colorado climate data.
Right-sized systems based on Colorado climate data reduce energy costs for homeowners and improve your reputation.
Upload your Colorado 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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