Massachusetts spans 2 IECC climate zones. Find your exact zone, design temperatures, and get free Manual J load calculations for any Massachusetts location.
Cool - Humid
Cold - Humid
Based on Climate Zone 5A (Cool - Humid), here are typical HVAC equipment specifications for Massachusetts installations.
Annual Fuel Utilization Efficiency for Massachusetts furnaces
Seasonal Energy Efficiency Ratio for Massachusetts AC systems
Massachusetts's climate zone data ensures proper equipment sizing. No more callbacks from oversized or undersized systems.
Massachusetts building departments require IECC-compliant Manual J calculations. Our tool uses official Massachusetts climate data.
Right-sized systems based on Massachusetts climate data reduce energy costs for homeowners and improve your reputation.
Upload your Massachusetts blueprint and get a professional Manual J load calculation with official climate zone data. First report is FREE.
Join 10,000+ Massachusetts contractors who trust AutoHVAC for permit-ready load calculations
Get detailed climate zone information for major cities
Need Massachusetts HVAC permit forms and building department contacts?
View Massachusetts Permit Directory