This experimental study is concerned with gas-liquid heat exchangers relying on cross-corrugated tubes. The experiments are carried out with air flow on the inner side of the tube, cooled by a secondary outer water flow. Overall 18 different geometrical configurations are investigated. In contrast to Harless et al. (2016) the emphasis of the present investigation is put on the cross-corrugated variant. The dimensionless corrugation pitch p/d(i) varies between 0.283 and 1.117, the dimensionless corrugation height e/d(i) between 0.024 and 0.087, and the corrugation angle phi between 14.7 and 48.8. The examined Reynolds number range is 5000 < Re < 23, 000, to match a typical range of gas-liquid heat exchangers. Nusselt number and friction factor are plotted for all tubes and are correlated with a power law of the corrugation dimensions. Finally, the thermal performance of the tubes is investigated in terms of the R3 criterion. Within this study the highest thermal performance is obtained by a cross-corrugated tube with p/d(i) = 0.769 and e/d(i) = 0.081. (C) 2016 Elsevier Ltd. All rights reserved.