HVAC Load Calculator for
St. Louis Homes
Local Climate Analysis for St. Louis
St. Louis typically experiences summer highs reaching design temperatures of 94°F. Due to high humidity levels in this region, your HVAC system must be sized to handle significant latent load (moisture removal).
📊 Energy Usage Profile
Days you need AC
Days you need Heat
⚙️ Technical Factors
High humidity load. Dedicated dehumidifier recommended.
No derating needed.
Manual J Tip for MO
Because the design temperature difference (Delta T) in St. Louis is approximately 19°F (Summer) and 62°F (Winter), your system may need to be sized primarily for one extreme season over the other.
Installation Cost in St. Louis
Local labor rates and equipment standards in MO influence the final quote. For a standard 3-ton system changeout in St. Louis, calculate roughly $1,800 - $2,200 per toninstalled, depending on whether you choose a single-stage or variable-speed inverter unit.