<p>Thanks to advances in satellite observations and high-resolution ocean/climate modeling, the importance of ocean mesoscale eddies has been increasingly recognized in recent decades. However, more comprehensive and quantitative assessment of the role played by ocean mesoscale eddies in modulating the air–sea heat exchange is warranted to establish a complete picture of extratropical air–sea interaction. We extracted <i>O</i> (10⁵) areas of ocean mesoscale eddies in the North Pacific during 1993–2021 from an eddy-resolving ocean reanalysis dataset (JCOPE-FGO) using a non-tracking eddy detection method based on curvature vorticity at each grid point, instead of the conventional Lagrangian methods. The extracted grid points below (above) a threshold of negative (positive) curvature vorticity represent physical properties of the anti-cyclonic (cyclonic) eddies, including positive (negative) sea surface temperature (SST) anomalies. These positive (negative) SST anomalies on the warm (cold) eddies act to enhance (reduce) upward heat releases from the sea surface. The extracted warm and cold eddies exhibit asymmetries in number, spatial scale, and amplitude of associated surface heat flux anomalies, leading to a greater contribution of warm eddies to oceanic heat release. Owing to a slight latitudinal difference of the highest frequency between warm and cold eddies in the western North Pacific, the enhancement of the heat release overwhelms its reduction north of the Kuroshio Extension (KE), and vice versa south of the KE. We further discuss how such latitudinally asymmetric air–sea heat exchange anomalies influence the meridional ocean heat transport by mesoscale eddies and the mid-latitude atmospheric baroclinicity.</p>