Definition
The indoor coil is where refrigerant absorbs or releases heat as air moves across it. In heat-pump and electric air-handler systems, coil condition and airflow are central to comfort, efficiency, and equipment life.
Why it matters in the Wenatchee Valley
The Valley's 100° summers, single-digit winters, and orchard dust work HVAC equipment harder than most climates — so terms like this show up on real estimates here. Use it to ask sharper follow-up questions, and if a quote doesn't add up, our free second opinion reviews it line by line.