The Hydromassage Pump HA-350 by Balboa, part of their HydroAir series, is a versatile and efficient option for whirlpool baths and smaller hot tubs. This pump is known for its compact design, low noise operation, and robust performance. It offers features like dry run protection, which helps prevent damage to the pump when operating without water​.
 
The HA-350 comes in 0.68 kW (0.9 HP), and is designed for easy installation with its anti-vibration feet​.
 
It operates on a 220-240V supply and is equipped for both pneumatic and electronic controls. The pump's standard thread is a 2.5-inch Buttress, with additional BSP threading available upon request​.
 
Overall, it is a reliable choice for both new installations and retrofitting in existing spa systems, offering quiet operation and durability, especially in high-demand environments​.