IECC Zone 4C (west/Portland); 5B (east/Bend)

Mini Splits & Heat Pumps in Oregon

Oregon divides sharply at the Cascades. Western Oregon (Portland, Eugene) is maritime — mild wet winters rarely below 30°F, cool dry summers with occasional 100°F heat waves. Eastern Oregon (Bend, Pendleton) is high desert with cold winters and hot dry summers.

Climate Zone
4C (west/Portland); 5B (east/Bend)
Cooling Degree Days
200–800
Heating Degree Days
4,000–6,500
Dominant Load
heating

What Works in Oregon

Western Oregon heat pumps work with any modern inverter unit. Eastern Oregon needs hyper-heat for the cold side. Energy Trust of Oregon is the main incentive program, stackable with federal 25C.

MrCool DIY 5th Gen (western)MrCool Hyper Heat (eastern/Bend)

Oregon Rebates & Incentives

Energy Trust of Oregon runs main rebates. Oregon HEEHRA rolling out via Department of Energy. Federal 25C stacks.

Major Utilities
  • Portland General Electric
  • Pacific Power
  • Idaho Power (OR customers)
  • EWEB

Oregon Licensing & Install Rules

Oregon requires a CCB-licensed HVAC contractor for commercial work. Homeowner DIY permitted on primary residence with mechanical permits.

Top Oregon Metro Areas

We ship to every ZIP in Oregon. Largest metros where we deliver most often:

Portland, OR
Salem, OR
Eugene, OR
Gresham, OR
Bend, OR

Recommended for Oregon Homes

Heat pumps and mini splits in our catalog that match Climate Zone 4C (west/Portland); 5B (east/Bend) conditions.

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