0034F00C GEMINI PLUS II BALBOA WHIRLPOOL PUMP

The 0034F00C GEMINI PLUS II BALBOA WHIRLPOOL PUMP is the smart, reliable replacement you need when Balboa’s Gemini II pump model has been discontinued. It’s engineered by a new manufacturer to preserve the jet power and consistent circulation your spa or hot tub relies on, while embracing a modern package that fits your cabinet space with minimal fuss.

Why this Gemini Plus II pump stands out

• Purpose-built replacement for a broad range of Balboa Gemini II models, delivering familiar performance in a refreshed form factor.
• Flexible horsepower options: starts at ¾ HP and can be upgraded to 1.25 HP (upgrade part 0060F88C) for higher jet flow when your spa demands more performance.
• Single-speed by default, with upgrade-ready versatility out of the box; pair with Balboa’s Variable Speed Control System to achieve smooth low-to-high modulation for quieter operation and energy savings.
• Ready-to-install hardware includes Pump Union and new tubing for the air switch (0034F88C), minimizing downtime and easing the installation process.
• Broad compatibility designed to fit spas and tubs that previously used 0034F88C, 0036F00C, NRU2A-C, 0035F00C, and related models, reducing the guesswork during replacement.

What’s inside and how it works

• Core design Gemini II–style pump built for 120V, 50-60Hz operation with a compact footprint that slides into standard spa cabinets.
• Included fittings pump union and air-switch tubing (0034F88C) are part of the package to streamline installation without hunting for extra parts.
• Power and speed flexibility baseline ¾ HP with an upgrade path to 1.25 HP, letting you tailor flow to your jet package and spa size.
• Control and performance standard single-speed operation; for variable-speed performance, pair with Balboa’s Variable Speed Control System to get gradual, quieter flow adjustments.

Key specifications at a glance

• Horsepower: ¾ HP (base) and 1.25 HP upgrade option available
• Speed: single-speed by default; variable-speed with the appropriate Balboa control system
• Voltage: 120V
• Frequency: 50-60Hz
• Dimensions: Length 12-11/16" (12.6875"), Width 5-11/16" (5.6875"), Discharge Height 7-3/4" (7.75")
• Replaces: a broad range of Balboa Gemini II models and equivalents, simplifying the replacement process

Ideal use cases

• Replacing a discontinued original Gemini II pump in spas and hot tubs that use Balboa controls, restoring familiar jet power and circulation.
• Upgrading to higher flow when your jet package requires more performance by switching to the 1.25 HP configuration.
• Systems that need a straightforward, compatible replacement with included air-switch tubing and union fittings to minimize downtime.

Practical installation tips

• Before installing, compare the new unit’s footprint and discharge height with your existing pump housing to confirm a smooth fit.
• For variable-speed operation, plan to install Balboa’s Variable Speed Control System to unlock a wide range of flow settings, which translates to smoother jets and better energy efficiency.
• Ensure proper alignment of the pump union fittings and air-switch tubing (0034F88C) to prevent leaks and secure connections right away.
• Check that your spa’s electrical setup matches the 120V, 50-60Hz requirements to avoid compatibility issues.

The 0034F00C GEMINI PLUS II BALBOA WHIRLPOOL PUMP delivers dependable, adaptable performance for Balboa-equipped spas and hot tubs. With a clear upgrade path, included install-ready hardware, and compatibility across multiple Gemini II models, it’s designed to keep your jets buzzing and your circulation steady—long after the original pump is no longer available.