This study investigates the performance and emissions characteristics of a double swirler burner (DSB) operating with hydrogen-enriched fuel mixtures at varying equivalence ratios. The effect of hydrogen addition on flame stability, bulk velocity, and emissions was systematically examined. Results show that increasing hydrogen content stabilizes the flame by improving reactivity and flame anchoring, while decreasing the equivalence ratio causes flame instability and eventual blow-off in lean conditions. The bulk velocity remained largely independent of the hydrogen content, primarily governed by the equivalence ratio. Emissions analysis revealed that NOx emissions peaked at 10 ppm, but remained low overall, highlighting the burner’s effectiveness in minimizing NOx formation. HC and CO emissions were minimal at richer conditions but increased significantly at lean equivalence ratios due to incomplete combustion. The DSB demonstrated strong performance with hydrogen-enriched fuels, maintaining stable combustion and low emissions, making it a promising design for future hydrogen-based and low-emission combustion systems.