Definition
A cold-climate heat pump is an air-source heat pump designed and tested to keep delivering useful heat in freezing weather, usually with a variable-speed compressor. ENERGY STAR's cold-climate certification requires third-party verified performance down to 5°F, and NEEP's cold-climate specification publishes standardized low-temperature capacity and efficiency data for listed models.
Also called: ccASHP
Why it matters to you
Most SW Washington winter nights stay well above 5°F, but Columbia Gorge east-wind events and occasional hard freezes are when an ordinary heat pump leans hardest on backup heat. A cold-climate model keeps more of its own capacity on those nights, though even certified units are typically paired with backup heat for the coldest hours.
Practical guidance
Ask for the model's ENERGY STAR cold-climate certification or NEEP listing and its rated heating capacity at low temperatures, not just its nameplate size. Confirming capacity against your home's heat loss at design temperature is a job for the installer's load calculation.
About this definition
Written by the Home Energy Group team — a family-owned HVAC company celebrating 25 years of comfort & care across SW Washington and the Portland metro, licensed in Washington (WA LIC# HOMEEGI003J7) and Oregon (OR CCB# 184255). Definitions inform; an on-site diagnosis decides.
