HVAC Load Calculator for
Durham Homes
Local Climate Analysis for Durham
Durham typically experiences summer highs reaching design temperatures of 90°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 NC
Because the design temperature difference (Delta T) in Durham is approximately 15°F (Summer) and 47°F (Winter), your system may need to be sized primarily for one extreme season over the other.
Installation Cost in Durham
Local labor rates and equipment standards in NC influence the final quote. For a standard 3-ton system changeout in Durham, calculate roughly $1,800 - $2,200 per toninstalled, depending on whether you choose a single-stage or variable-speed inverter unit.