Balboa ULTIMAX Pump 5239216-S

Balboa now makes the replacement hot tub pumps for the discontinued Ultrajet and Ultimax series of pumps. Balboa pumps have the same design and footprint as the Ultrajet and Ultimax had making it a simple swap when a replacement is needed. Always ensure that the new replacement pumps high and low speed amps do not exceed your old pumps amps.

• 230 volts, 60 hrz
• 2 speed
• 2" intake (Measures 3" outside to outside thread)
• 2" discharge (Measures 3" outside to outside thread)
• 56 Frame motor
• 16 Amps on high speed (5HP)
• 4.4 Amps on low speed 
• Balboa OEM Part #5239216-S
• New cord and unions not included, sold separately.

If you are replacing an older Ultra jet hot tub pump it is important to reference the high amps (OLD) instead of the HP, Ultra jet pumps HP listed on the motors is uprated. Cord and unions not included, sold separately. Ultra jet replacement pumps are now made by Balboa

Part #: 5239216-S

Horsepower ratings

Choosing a pump based on Horsepower (HP) can be incorrect. The horsepower listed in your spa manual or on the old pump's label may be overinflated, inaccurate, or even left blank. Horsepower ratings on hot tub pumps are often listed as SPL-HP, BHP, MBHP, RHP or S-HP, which is not the same as continuous operating horsepower. Installing an oversized pump in your hot tub can cause significant damage.

To avoid choosing the incorrect pump, confirm if it’s a 48 frame or 56 frame, then use the high-speed Amperage rating listed on the old pump's label to find the correct replacement instead of the horsepower. The amperage rating is listed with both high/low speed for a 2-speed pump.

Determining hot tub pump thread size

Hot tub pump plumbing sizes are nominal and not the actual outside diameter (O.D.) of the threaded intake or discharge. To confirm your old pump thread sizes, use a tape measure and check the diameter of your old pump thread size.

• 1.5” Pump thread measures approx. 2-3/8” Outside Diameter
• 2.0” Pump thread measures approx. 3” Outside Diameter
• 2.5” Pump thread measures approx. 3-5/8” Outside Diameter

Amperage ratings

New hot tub pump amperage ratings may vary slightly for pumps with the same performance rating. The RPMs remain the same 3450 for high-speed and single-speed pumps and 1725 for low-speed for two-speed pumps.