This study experimentally quantified the change in heat transfer and pressure drop associated with tilting a compact brazed heat exchanger from the intended vertical position. Both clock wise and counterclockwise rotations within a plane perpendicular to the fittings were examined. A SWEP B15 x 36 was tested as an R-22 evaporator and condensor under fixed refrigerant state conditions suitable to high-efficiency water-source heat pumps. This study showed that a substantial performance penalty occurred when evaporator was rotated past 30 degrees from the vertical. The evaporator hear transfer in the horizontal position was 60-75% of the vertical value. For a rotation angle of 30 degrees the degraded heat transfer was within 5% of the vertical value. Rotation direction and entering refrigerant state had little effect on the performance of the evaporator for rotation angles less than 60 degrees. Only when the evaporator was rotated to the horizontal position did rotation direction and refrigerant state have much effect. At the horizontal position, a subcooled-entering refrigerant and a counter clockwise rotation both tended to lessen the evaporator heat transfer degradation. Rotation of the condenser to the horizontal position improved the overall heat transfer coefficient by approximately 17-30%. Rotation direction had a negligible effect on the performance of the condenser for angles less than 60 degrees. Both the evaporator and condenser pressure drops were influenced by flow distribution changes as the heat exchangers were rotated.