In Singapore, refrigeration and air conditioning usage typically exceeds 50% of the total electricity consumption for a household. A higher-efficiency condenser coil providing higher heat removal capacity with lower air-side pressure drop is highly desirable. However, most coil designs are designs of different fin patterns for higher heat transfer, but also incur larger air-side pressure drop and thus more power consumption. The thermal and hydraulic performance of the condenser coil design with plain fin, corrugated fin, and novel oblique tube will be evaluated numerically in this study in comparison with a circular tube coil. This novel design features smaller air recirculation zone behind the tube so as to improve heat transfer and to lower air-side pressure drop. The conjugate heat transfer between the finned tube and a turbulent flow, governed by the k-epsilon turbulence model is solved using the commercial CFD software, ANSYS Fluent 15.0. A single-row-tube condenser coil is modelled with periodic boundary condition, a constant condensation temperature of 45°C on the inner tube wall and an inlet air temperature of 35°C at a velocity of 1 to 3 m/s. The simulation results show that, for the plain fin configuration, the shape of the oblique tube is important in reducing the air-side pressure drop up to 14% at the same inlet air velocity as compared with the circular tube coil. As a result, at the same air-side fan power input, the heat transfer capacity is increased by 14% at 2m/s. With corrugated fin guiding and promoting air speed, causing more flow separation zones, it is detrimental to the thermal-hydraulic performance of the oblique tube coil. Nevertheless, corrugated fin increases the thermal performance of the circular tube slightly but at over 10% larger pressure drop penalty. As such, plain fin oblique tube design has the best overall performance and could result in lower condensation temperature and reduced compressor power input for residential air conditioner. The discussion of choice of materials for tube and fin, such as copper, brass, and aluminium, is provided with possible manufacturing processes required for potential future design options.