🛁 Balboa WOW Bath Pump 1057015 – 5.5A Single Speed with Air Switch

Compact, Ultra-Quiet Whirlpool Bath Pump with Proven Reliability and Plug-and-Play Convenience

💧 Product Overview

The Balboa WOW (Whirlpool Operating Wonder) Bath Pump, part number 1057015, is a single-speed whirlpool bath pump manufactured by Balboa Water Group. Designed specifically for jetted bathtub and whirlpool bath applications, this 115V / 5.5-amp pump delivers reliable hydrotherapy jet performance in an exceptionally compact package.

The WOW pump has earned its reputation as one of the most dependable bath pumps available, boasting a manufacturer-reported failure rate of less than 0.1%. It features a self-draining volute that prevents standing water and promotes a dry, sanitary plumbing system between uses. The built-in air switch and included NEMA power cord make installation straightforward — simply plug into a GFCI-protected 115V household outlet. UL and CSA approved, the WOW pump meets rigorous North American safety standards and has become the industry benchmark for luxury whirlpool bath pumps.

This specific model (1057015) features front-facing suction (bottom) and discharge (top) ports, both with 1-1/2″ Male Buttress Thread (MBT) connections. It is the current-production replacement for the discontinued part number 388316.

⭐ Key Features

✅ Single Speed Bath Pump – Purpose-built for whirlpool bathtub jet applications with dependable single-speed operation

✅ 5.5 Amp / 115V Motor – Plugs directly into a standard GFCI-protected 115V household outlet — no hardwiring required

✅ Built-In Air Switch – Integrated pneumatic on/off air switch for convenient, safe bathtub-side activation

✅ NEMA Power Cord Included – Comes with a 3-prong grounded NEMA plug and cord for immediate plug-and-play installation

✅ Self-Draining Volute – Engineered to drain completely after each use, preventing stagnant water buildup and promoting hygiene

✅ Ultra-Quiet Operation – Minimal noise during operation, enhancing the tranquility of your hydrotherapy experience

✅ Compact Design – Measures just 12.87″ L × 5″ W × 8.31″ H, fitting easily into tight whirlpool tub enclosures

✅ 1-1/2″ MBT Ports – Male Buttress Thread suction and discharge connections compatible with standard whirlpool bath union fittings

✅ UL and CSA Approved – Passes rigorous agency testing for electrical and product safety in the United States and Canada

✅ Less Than 0.1% Failure Rate – Manufacturer-reported reliability backed by the service and reputation of Balboa Water Group

✅ 12-Month Manufacturer Warranty – Covered by Balboa Water Group’s limited warranty from date of purchase

🔩 Technical Specifications

Specification	Value
Manufacturer	Balboa Water Group
Pump Model	WOW (Whirlpool Operating Wonder)
Part Number	1057015
Pump Type	Whirlpool Bath Pump (Jetted Tub)
Speed	Single Speed (1-Speed)
Motor Voltage	115V
Frequency	60 Hz
Motor Amperage	5.5A
Suction Port Size	1-1/2″
Suction Connection Type	Male Buttress Thread (MBT)
Suction Position	Bottom (front face)
Discharge Port Size	1-1/2″
Discharge Connection Type	Male Buttress Thread (MBT)
Discharge Position	Top (front face)
Dimensions (L × W × H)	12.87″ × 5″ × 8.31″
Motor Length	9.25″
Shipping Weight	Approximately 11.4 lbs
Included Accessories	Built-in air switch, NEMA power cord (3-prong grounded plug)
Volute Type	Self-draining
Certifications	UL Listed, CSA Approved
Warranty	12 months (manufacturer limited warranty)

⚡ Electrical Requirements

Electrical Specification	Requirement
Supply Voltage	115V (standard household outlet)
Frequency	60 Hz
Phase	Single Phase
Full Load Amperage	5.5A
Connection Type	NEMA plug (cord-and-plug connected)
Outlet Requirement	GFCI-protected grounding-type receptacle

⚠️ IMPORTANT ELECTRICAL SAFETY:

• This pump plugs into a standard 115V household outlet — it must be a grounding-type receptacle protected by a Ground Fault Circuit Interrupter (GFCI).
• Do NOT use an extension cord. Provide a properly located outlet near the pump installation area.
• Do NOT bury the power cord. Position the cord where it is protected from lawn mowers, hedge trimmers, and other equipment.
• If the cord is damaged, replace it immediately to reduce the risk of electric shock.
• All electrical work (installation and repair) must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes.
• If you cannot verify that the receptacle is GFCI-protected, contact a qualified electrician.

🔗 Compatibility Guide

Port Configuration (This Pump)

Connection	Size	Type	Position
Suction	1-1/2″	Male Buttress Thread (MBT)	Bottom of front face
Discharge	1-1/2″	Male Buttress Thread (MBT)	Top of front face

Both suction and discharge are located on the same front face of the pump (bottom and top, respectively). The Male Buttress Thread connections accept standard 1-1/2″ Female Buttress Thread (FBT) union fittings.

Compatible Union Fittings

Unions are NOT included with this pump. The following compatible union fittings are available separately from Parts4Tubs:

• Magic Plastics 0602-15 – 1-1/2″S × 1-1/2″ FBT pump union with O-ring (industry standard)
• 3320601 – 1″S × 1″S × 1-1/2″ FBT union tee
• 2614022 – 1-1/2″ FBT union with O-ring
• 92030 – 1-1/2″ FBT union tee to 1″ barb

Union Size Reference

Union Size	Collar Tip-to-Tip	Thread OD	O-Ring Size
1-1/2″ FBT	2.5″ / 64mm	2-1/2″ / 64mm	2-5/16″ OD / 59mm

Replaces Part Number

Superseded Part	Replacement
388316	1057015 (this pump)

Related WOW Pump Models (Same 5.5A Family)

The following Balboa WOW models share the same 5.5-amp, 115V, single-speed configuration. The 1057015 is the current production model:

Part Number	Notes
1050031	Previous generation WOW 5.5A with air switch and NEMA cord
1010031	Earlier generation — same pump as 1050031 (different packaging only)
1010115	Earlier generation variant

⚠️ Important: While the 1057015 shares the same amperage and voltage as these models, always verify physical dimensions, port positions, and volute configuration before ordering a replacement. The 1057015 features front/front (same-side) suction and discharge.

Other WOW Pump Models (Different Amperage — NOT Interchangeable)

Part Number	Amperage	HP	Notes
1050032	7.5A	3/4 HP	Higher power WOW with air switch
1051057	9.0A	1.0 HP	Power WOW — significantly more powerful
1074002	13.5A	1.5 HP	Power WOW — highest power in lineup

⚠️ Do NOT substitute a different amperage model without verifying your electrical circuit capacity. Using a higher-amperage pump on an undersized circuit may trip breakers or create safety hazards.

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🛠️ Installation Requirements

Mounting

Requirement	Specification
Mounting Position	Horizontal (standard bath pump orientation)
Base	Solid, level surface
Ventilation	Ensure adequate airflow around motor for cooling
Access	Allow sufficient clearance for maintenance and union access

Plumbing Connections

Connection	Size	Type
Suction	1-1/2″	Male Buttress Thread (MBT)
Discharge	1-1/2″	Male Buttress Thread (MBT)
Union Type	Standard FBT unions (sold separately)

Installation Notes

⚠️ Before starting the motor, fill the tub with water to the level recommended by the whirlpool tub manufacturer. If not specified, fill the tub to the same level as the top of the pump. Never run the pump dry!

⚠️ This pump includes a built-in air switch. If the motor does not start upon plugging it in, the air switch may be in the off position. Activate the air button to turn the pump on.

⚠️ Do not use pipe compound or Teflon tape on union connections. O-ring and sealing surfaces must be clean.

⚠️ Do not relocate the pump without prior approval from the manufacturer.

⚠️ Motors have a built-in automatic-reset overload protector. If the motor stops, it will restart automatically once it cools down (provided power is still supplied).

⚠️ The air switch activation connection is located on the back of the pump and is 1/8″ diameter. There are also two 3/8″ ports above the discharge snout. These ports are not pre-drilled — your installer will need to drill out the one being used.

⚠️ This pump is for use with permanently installed whirlpool baths. Do not use with storable/portable pools.

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🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal area and union connections
Inspect union connections	Monthly	Ensure fittings are secure; tighten if needed
Clean debris from ports	As needed	Remove any hair or debris that may restrict flow
Check motor vents	Quarterly	Keep motor vents free of dust and debris for proper cooling
Verify air switch operation	Monthly	Press air button to confirm reliable on/off activation
Inspect power cord	Monthly	Check for damage, fraying, or exposure; replace immediately if compromised

Warning Signs — Pump May Need Replacement If:

• Unusual noise (grinding, screeching, or humming without starting)
• Water leaking from the seal area
• Motor trips the circuit breaker repeatedly
• Reduced water flow to the jets
• Motor overheating or failing to start
• Pump does not respond to air switch activation after verifying connections

Seal Replacement

Detail	Information
Seal Part Number	5190-016
Note	Replace the shaft seal at the first sign of water leakage from the seal area

Pump Disassembly (For Qualified Technicians Only)

1. Disconnect electrical supply (ensure breaker is OFF)
2. Disconnect plumbing unions
3. Remove front volute bolt nut, then remove the volute front
4. Remove the O-ring, then remove the impeller by holding the rear shaft slot with a screwdriver and spinning the impeller off counter-clockwise
5. Remove the seal assembly and slide the rotating seal member off the impeller hub
6. The volute back will separate from the motor once the impeller is removed
7. Push the stationary seal member out from the rear of the volute back

Reassembly

1. Lubricate the stationary seal rubber cap with clean water only — push firmly and squarely into the seal plate cavity using finger pressure only (never use tools)
2. Clean the impeller hub; wet the shaft with clean water, then slide the rotating seal member onto the hub
3. Hold the volute back against the motor
4. Screw the impeller onto the shaft, hand tight
5. Insert the O-ring
6. Align bolt holes and install bolts, ensuring they grip both volute front and back
7. Tighten all bolts evenly

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🎯 Ideal Applications

Application	Suitability	Notes
🛁 Jetted whirlpool bathtub	✅ Yes	Primary application — designed specifically for residential whirlpool baths
🛁 Spa pedicure chairs	✅ Yes	Commonly used as a replacement pump in spa pedicure stations
♨️ Hot tub / spa jet pump	❌ No	This is a bath pump, not a hot tub jet pump — different mounting and plumbing
♨️ Spa circulation pump	❌ No	Not designed for continuous circulation duty

❓ Frequently Asked Questions

Q: What amperage is this pump? A: This pump draws 5.5 amps at 115 volts. When matching a replacement bath pump, always match by amperage and voltage rather than horsepower, as HP ratings vary across sources for the WOW pump lineup.

Q: Does this pump plug into a regular outlet? A: Yes. The 1057015 comes with a NEMA power cord and 3-prong grounded plug designed for a standard 115V household outlet. The outlet must be GFCI-protected as required by the National Electrical Code.

Q: What is the air switch and how does it work? A: The air switch is a pneumatic on/off control built into the pump. An air button (typically mounted on the bathtub deck) sends a pulse of air through a small tube to the switch on the pump, turning it on or off. This keeps all electrical components safely away from water. If the pump does not start when plugged in, the air switch is likely in the off position — press the air button to activate.

Q: Will this pump fit my whirlpool tub? A: Check your existing pump’s port sizes (suction and discharge), connection type (Male Buttress Thread), amperage, and voltage. This pump has 1-1/2″ MBT connections on both suction and discharge, draws 5.5A at 115V, and measures 12.87″ L × 5″ W × 8.31″ H. Confirm your available space can accommodate these dimensions.

Q: Are unions included? A: No. Unions and plumbing fittings are sold separately. Compatible 1-1/2″ FBT unions are available from Parts4Tubs, including the Magic Plastics 0602-15 union and the 2614022 union with O-ring.

Q: Does this pump replace the 1050031 or 1010031? A: The 1057015 is a current-production Balboa WOW 5.5A bath pump. It shares the same amperage and voltage as the 1050031 and 1010031. However, always verify port positions and physical dimensions before ordering, as volute configurations may differ between models. The manufacturer lists the 1057015 as a direct replacement for part number 388316.

Q: Is this pump suitable for hot tubs or spas? A: No. The WOW 1057015 is a bath pump designed for jetted whirlpool bathtubs. It is not designed for hot tub or spa jet applications, which require different pump types with larger frames and higher-capacity motors.

Q: How long does this pump typically last? A: With proper installation and maintenance, the WOW pump is known for exceptional longevity. Balboa Water Group reports a failure rate of less than 0.1%, making it one of the most reliable bath pumps on the market.

Q: What warranty is included? A: The 1057015 is covered by a 12-month manufacturer limited warranty from the date of first consumer purchase. Contact Parts4Tubs or Balboa Water Group for full warranty terms and claim procedures.

Q: Do I need a GFCI outlet? A: Yes. Per the National Electrical Code (NEC), cord-and-plug connected whirlpool bath pumps must be plugged into a GFCI-protected grounding-type receptacle. If you are unsure whether your outlet has GFCI protection, contact a licensed electrician.

🏆 Why Choose the Balboa WOW 1057015

✅ Industry-Leading Reliability – Less than 0.1% failure rate, backed by the reputation of Balboa Water Group

✅ Ultra-Quiet Operation – Minimal pump noise enhances the relaxation of your hydrotherapy experience

✅ Plug-and-Play Installation – NEMA cord and built-in air switch make installation quick and straightforward

✅ Self-Draining Volute – Promotes hygiene by draining water completely after each bath cycle

✅ Compact Footprint – At just 12.87″ × 5″ × 8.31″, it fits into the tightest whirlpool tub enclosures

✅ UL and CSA Certified – Meets stringent North American safety standards

✅ 12-Month Warranty – Manufacturer warranty coverage for peace of mind

🤝 Why Buy from Parts4Tubs

✅ US-based support for American customers

✅ Fast shipping across the United States

✅ Expert advice from spa and hot tub specialists

✅ Competitive pricing

✅ Full warranty support

✅ Hassle-free returns

✅ Replacement seals, unions, and parts available

✅ Dedicated customer service team

✨ Summary

The Balboa WOW Bath Pump 1057015 is a 5.5-amp, 115-volt, single-speed whirlpool bath pump with a built-in air switch and NEMA power cord for simple plug-and-play installation. Featuring ultra-quiet operation, a self-draining volute, and an industry-leading reliability record of less than 0.1% failure rate, this UL and CSA approved pump is the trusted choice for residential jetted bathtub applications. Backed by Balboa Water Group’s 12-month warranty and available now from Parts4Tubs with fast US shipping.

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.

2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)

3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.

4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.

5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.

6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.

7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.

8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.

9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.

10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.

11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.

12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.

13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.

14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.

15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.

2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.

3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.

4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.

5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.