The aim of this current work is to investigate a Delta-Winglet vortex generator to enhance heat transfer and reduce pressure drop of a fin-and-tube heat exchanger. Three patterns of fin including plate, louver and Delta-Winglet vortex generator geometry were examined in this study. The effect of a Delta-Winglet vortex generator on the performance of a fin-and-tube heat exchanger is experimentally investigated through full-scale wind-tunnel testing of a fin-and-tube heat exchanger under dry-surface conditions. Three types of heat exchangers including 1-row, 2-row and 4-row with plate fin, louver fin and Delta-Winglet vortex generator (VG fin) were tested through different velocity conditions. The heat transfer rate per pumping power is assessed for a plate fin baseline louver fin and for VG fin heat exchanger. For VG fin 1 -row heat exchanger, heat transfer rate per pumping power increase over the baseline case of 20% at a frontal velocity of 1 m/s, and approach the baseline case at a frontal velocity of 2 m/s. For VG fin 2-row heat exchanger, heat transfer rate per pumping power decrease over the baseline case of 15% at full range frontal velocity. The frontal velocity ranges from 2 m/s to 5 m/s, the heat transfer rate per pumping power of plate fin heat exchanger is better than other sample.