Verified Climate Data • Zip 97204
HVAC Load Calculator for
Portland Homes
Summer Design90°F
Winter Design30°F
Humidity Loadmedium
Local Climate Analysis for Portland
Portland typically experiences summer highs reaching design temperatures of 90°F. With moderate humidity, standard sizing rules apply, but insulation quality remains critical.
📊 Energy Usage Profile
Cooling Demand (CDD)819
Days you need AC
Heating Demand (HDD)4403
Days you need Heat
⚙️ Technical Factors
Wet Bulb62°F
Standard humidity management sufficient.
Elevation39 ft
No derating needed.
Manual J Tip for OR
Because the design temperature difference (Delta T) in Portland is approximately 15°F (Summer) and 40°F (Winter), your system may need to be sized primarily for one extreme season over the other.
Installation Cost in Portland
Local labor rates and equipment standards in OR influence the final quote. For a standard 3-ton system changeout in Portland, calculate roughly $1,800 - $2,200 per toninstalled, depending on whether you choose a single-stage or variable-speed inverter unit.