Montana spans 3 IECC climate zones. Find your exact zone, design temperatures, and get free Manual J load calculations for any Montana location.
Cool - Dry
Cold - Dry
Very Cold
Based on Climate Zone 5B (Cool - Dry), here are typical HVAC equipment specifications for Montana installations.
Annual Fuel Utilization Efficiency for Montana furnaces
Seasonal Energy Efficiency Ratio for Montana AC systems
Montana's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Montana building departments require IECC-compliant Manual J calculations. Our tool uses official Montana climate data.
Right-sized systems based on Montana climate data reduce energy costs for homeowners and improve your reputation.
Upload your Montana blueprint and get a professional Manual J load calculation with official climate zone data. First report is FREE.
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