⚡ LX Lingxiao WBH150 Bath Pump — 1.0 HP 115V 9.0A Single-Speed Whirlpool Bath Pump with Air Switch, NEMA Cord & Unions

High-flow replacement for Balboa WOW and Waterway Genesis 1 HP bath pumps — plug-in ready with cord, unions, and air switch included

♨️ Product Overview

The LX WBH150 is a 1.0 HP, 115V, 9.0A single-speed whirlpool bath pump manufactured by Guangdong Lingxiao (LX Pumps), one of the largest bath and spa pump manufacturers in China with over 46 years of production experience. It features a front/top wet end configuration with center discharge and bottom suction, using standard 1-1/2″ Male Buttress Thread (MBT) connections that measure 2-7/16″ OD.

The WBH150 is a complete ready-to-install package — it includes a 3-foot NEMA power cord with plug, two 1-1/2″ unions with o-rings, and a built-in air switch. This makes it a popular and cost-effective direct replacement for the Balboa Vico Power WOW 1051057 (1.0 HP, 9.0A) and Waterway Genesis 321JF10-0150 bath pumps. The pump features a glass reinforced composite housing, dry run mechanical seal, self-draining volute, and an air-cooled pure copper winding motor rated for continuous duty with IPX4 protection. It also replaces the obsolete Hydro Air LD5A-C (Magna series) pump.

⚠️ THIS IS A WHIRLPOOL BATH PUMP — designed for jetted bathtubs only. Not intended for continuous hot tub/spa circulation use.

✨ Key Features

• ✅ 1.0 HP Single-Speed Motor — 115V / 60Hz / 9.0A — pure copper winding for quiet, efficient operation
• ✅ Complete Package — 3′ NEMA cord with plug, two 1-1/2″ unions with o-rings, and built-in air switch all included
• ✅ Direct Replacement — Replaces Balboa Vico Power WOW 1051057, Waterway Genesis 321JF10-0150, and Hydro Air LD5A-C
• ✅ Self-Draining Volute — Water drains automatically when pump turns off, preventing stagnant water buildup
• ✅ Dry Run Mechanical Seal — Designed for reliability in bath pump applications with intermittent use
• ✅ Glass Reinforced Composite Housing — High-strength engineering plastic for corrosion resistance and durability
• ✅ Air-Cooled Motor — Aluminum front and back covers with excellent heat dissipation
• ✅ 1-1/2″ MBT Connections — Standard Male Buttress Thread (measures 2-7/16″ OD) — fits most whirlpool bath plumbing
• ✅ UL Recognized & CSA Certified — IPX4 protection, Class B insulation, continuous duty rated
• ✅ 1-Year Manufacturer Warranty — Shaft seal carries 3-month part-only warranty

⚙️ Technical Specifications

Specification	Value
Manufacturer	Guangdong Lingxiao (LX Pumps)
Model	WBH150 (with cord) / WCH150 (without cord)
Pump Type	Whirlpool bath pump (front/top wet end)
Motor Power	1.0 HP — see HP Rating Note above
Input Power	1.1 kW
Speed	Single speed
RPM	3,450
Voltage	115V
Frequency	60 Hz
Amperage	9.0A
Frame Type	48 Frame Thru-Bolt
Suction Port	1-1/2″ MBT — bottom (measures 2-7/16″ OD)
Discharge Port	1-1/2″ MBT — center (measures 2-7/16″ OD)
Dimensions (L × W × H)	14-3/16″ × 5-1/4″ × 6-15/16″
Weight	Approximately 21 lbs
Housing Material	Glass reinforced composite
Seal Type	Dry run mechanical seal
Self-Draining	Yes
Motor Type	Air-cooled, pure copper winding
Insulation	Class B
Protection Rating	IPX4
Duty Rating	Continuous
Certifications	UL Recognized, CSA Certified
Warranty	1 year manufacturer (shaft seal: 3 months part only)

🔌 Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	115V (110-120V)
Frequency	60 Hz
Phase	Single
Full Load Amps	9.0A
Minimum Circuit Breaker	15A
Wire Size (Recommended)	14 AWG

⚠️ IMPORTANT:

All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Whirlpool bath installations require GFCI (Ground Fault Circuit Interrupter) protection. A dedicated circuit is recommended — do not share with other high-draw appliances.

📦 What’s in the Box

Item	Quantity	Notes
LX WBH150 bath pump	1	Complete pump assembly with motor
1-1/2″ unions with o-rings	2	For suction and discharge connections
3′ NEMA power cord with plug	1	36″ cord, standard 3-prong plug (WBH150 only)
Built-in air switch	1	Factory installed — air button and hose NOT included

⚠️ Air button and 1/4″ air hose are sold separately. The pump has a built-in air switch but requires an external air button (typically mounted on the bath tub surface) connected via 1/4″ air tubing (1/8″ ID × 1/4″ OD). Standard air button hole size: 1-3/8″ for a 1-3/4″ diameter air button. Air hose available in 10-foot lengths (part 63000) or full rolls (100TUBING).

🔗 WBH150 vs WCH150 — What’s the Difference?

Feature	WBH150	WCH150
3′ NEMA Power Cord	✅ Included	❌ Not included — reuse old cord
Unions	✅ Included (2x with o-rings)	✅ Included (2x with o-rings)
Air Switch	✅ Built-in	✅ Built-in
Motor & Specs	Identical	Identical
Dimensions	14-3/16″ × 5-1/4″ × 6-15/16″	14-3/16″ × 5-1/4″ × 6-15/16″

The WBH150 includes a 3-foot NEMA power cord with plug — ready to plug in immediately. The WCH150 does not include a power cord — you must transfer the cord from your old pump onto this new one. All other specifications are identical.

💡 Choose WBH150 if your old pump’s cord is damaged, if you prefer a fresh cord, or for first-time installations. Choose WCH150 if your existing cord is in good condition and you want to save a few dollars.

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⚠️ WBH150 vs WBC150 — Different Pump Configurations

Do not confuse the WBH150 with the WBC150. These are different pumps with different wet end configurations:

Feature	WBH150 (this pump)	WBC150
Suction	Bottom	Center
Discharge	Center	Side
Configuration	Front/top	Side discharge
Replaces	Vico WOW 1051057, Waterway Genesis	Aqua-Flo FMHP, Gecko systems
Unions Included	✅ Yes	❌ No
NEMA Cord	✅ Yes (WBH)	❌ No

⚠️ Check your existing pump’s discharge and suction orientation before ordering. If your old pump has center suction and side discharge, you need the WBC150. If it has bottom suction and center discharge (like WOW pumps), you need this WBH150.

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🔄 Compatibility & Cross-Reference Guide

Direct Replacement For:

Pump	Brand	HP	Amps	Notes
1051057 / 1011057	Balboa Vico Power WOW	1.0 HP	9.0A	Same plumbing footprint
321JF10-0150	Waterway Genesis	1.0 HP	9.0A	With NEMA cord & air switch
LD5A-C / LD5A-CA	Hydro Air / Magna	—	—	Legacy bath pump (obsolete)

Alternate / Cross-Reference Part Numbers:

Part Number	Source / Brand
WBH150	LX Lingxiao (with cord)
WCH150	LX Lingxiao (without cord)
1-00-0059	OEM cross-reference
0034F88C	Balboa cross-reference
LD5A-C	Hydro Air / Magna (obsolete)
390588	OEM cross-reference
PX15000SCB	OEM cross-reference
WPP1500A	OEM cross-reference

Plumbing Compatibility:

📍 Frame: 48 Frame Thru-Bolt
📍 Suction: 1-1/2" MBT — bottom (measures 2-7/16" OD)
📍 Discharge: 1-1/2" MBT — center (measures 2-7/16" OD)
📍 Unions: Included (1-1/2" with o-rings)

⚠️ DIMENSION NOTE: The WBH150 measures 14-3/16″ × 5-1/4″ × 6-15/16″ — it is approximately 1 inch longer than the WBH100 (13-3/16″ L) due to the larger motor. Plumbing connections (1-1/2″ MBT) are compatible with the same tubs, but verify physical clearance in your installation space before ordering. Width and height are identical to the WBH100.

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⚠️ HP Rating Discrepancy — Important Information

The LX WBH150 has a widely documented HP rating discrepancy across retailers:

Source	Listed HP	Listed Amps
Spa Parts Plus (Parts4Tubs)	1.0 HP	9.0A
Hot Tub Outpost (WBH150)	1 HP	9.0A
SpaCare	1.0 HP	9.0A
Opentip	1.0 HP	9.0A
Spa & Pool Source	1.0 HP	9.0A
LX Model Numbering (WBH150)	1.5 HP	9.0A
LX Official Website (lingxiaopumps.com)	1.5 HP	9.0A
Hot Tub Outpost (WCH150)	1.5 HP	9.0A
PartsForSpas	1.5 HP	9.0A
Amazon LX (WCH150)	1.5 HP	9.0A

Why the discrepancy? LX’s model numbering convention uses the number to indicate HP (WBH150 = 1.5 HP), and their input power rating is 1.1 kW. The majority of US distributors rate it at 1.0 HP. The amperage (9.0A) is consistent across all sources and is the most reliable spec for matching. When replacing a 1.0 HP, 9.0A bath pump such as the Vico Power WOW 1051057, the WBH150 is the correct replacement.

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🛠️ Installation Guide

Step-by-Step Installation:

1. Disconnect power — Unplug the old pump from the electrical outlet. Never work on plumbing with power connected.
2. Disconnect plumbing — Loosen the union fittings on both the suction and discharge connections. Have towels ready for residual water.
3. Remove old pump — Slide the old pump out of position.
4. Install new unions — If replacing unions, cut existing PVC pipe cleanly. The 1-1/2″ PVC schedule 40 pipe slides into the union — it is NOT threaded into the inlet/outlet.
5. Position new pump — Place the WBH150 in the same orientation as the old pump (suction on bottom, discharge in center). Note: this pump is 14-3/16″ long — verify it fits your space.
6. Connect plumbing — Hand-tighten unions to suction and discharge ports. Do not over-tighten.
7. Connect air tubing — Attach 1/4″ air hose from the air button to the air switch nipple on the pump.
8. Plug in NEMA cord — Connect the 3-prong plug to a GFCI-protected outlet.
9. Test operation — Press the air button to activate the pump. Fill the tub with water BEFORE running the pump.

Installation Notes:

⚠️ Never run the pump dry — always ensure water is above the jet level before activating

⚠️ If the motor doesn’t start when plugged in, the air switch may be in the “off” position — press the air button to toggle

⚠️ Pump must be installed below water level (flooded suction) for proper operation

⚠️ Ensure proper grounding and GFCI protection per NEC requirements

⚠️ There is no industry standard for bath pump unions — the unions provided may require cutting off your old unions and installing the new ones

⚠️ Optional vibration and noise reducing rubber motor base available (part 319-0019)

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🔩 Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Around seal plate and union connections
Inspect unions	Monthly	Tighten if needed — do not over-tighten
Check motor vents	Quarterly	Keep clear of debris for proper air cooling
Inspect NEMA cord	Quarterly	Look for damage, cracking, or discoloration
Check amperage	Annually	Should read approximately 9.0A under load

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without rotation)
• Water leaking from the seal plate area
• Motor trips the circuit breaker repeatedly
• Reduced water flow or jet pressure
• Motor overheating or burning smell
• Pump fails to start when air button is pressed (and air switch is functional)

Seal Replacement:

📍 Seal Type: Dry run mechanical seal
⚠️ Shaft seal warranty: 3 months (part only)
⚠️ Replace seal at first sign of leakage from the seal plate area

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💨 Air Switch Operation

The WBH150 has a built-in pneumatic air switch — the same type used in the Vico WOW and Waterway Genesis pumps.

How it works:

1. An air button (sold separately) is mounted on the bathtub surface — typically on the rim or deck
2. 1/4″ air tubing (sold separately — 1/8″ ID × 1/4″ OD) connects the air button to the air switch nipple on the pump
3. Pressing the air button sends a puff of air through the tubing to the switch
4. The switch toggles the pump on or off — press once to start, press again to stop

What you need (sold separately):

• Air button (standard 1-3/4″ diameter, requires 1-3/8″ hole in tub deck) — such as 650-3000
• 1/4″ air tubing — available in 10-foot lengths (part 63000) or full rolls (100TUBING)

💡 Tip: If the pump doesn’t start when first plugged in, the air switch may be in the “off” position from the factory. Press the air button once to activate.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Whirlpool / jetted bathtub	✅ Yes	Primary intended use — larger tubs with more jets
🛁 Jetted garden tub	✅ Yes	Standard residential installation
♨️ Hot tub / spa jet pump	❌ No	Not designed for continuous hot tub use
♨️ Spa circulation pump	❌ No	This is a jet pump, not a circ pump

🔄 LX WBH/WCH Bath Pump Family (Front/Top, Center Discharge)

Model (with cord / no cord)	HP	Amps	Input Power	Dimensions (L)	Replaces
WBH75 / WCH75	0.5 HP	5.0A	0.55 kW	12-7/16″	WOW 1050031 (0.5 HP, 5.5A)
WBH100 / WCH100	0.75 HP	7.0A	0.75 kW	13-3/16″	WOW 1050032 (3/4 HP, 7.5A)
WBH150 / WCH150 (this pump)	1.0 HP	9.0A	1.1 kW	14-3/16″	WOW 1051057 (1.0 HP, 9.0A)
WBH200	2.0 HP	—	—	—	Higher-power bath applications

All WBH models include NEMA cord + unions. All WCH models include unions but NO cord. All models share 1-1/2″ MBT connections, 5-1/4″ width, 6-15/16″ height, built-in air switch, self-draining design, UL/CSA certification, and 1-year warranty.

💡 Note: Each step up in the family adds approximately 1 inch in length due to the larger motor. Width (5-1/4″) and height (6-15/16″) remain the same across all models.

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: The WBH150 is rated at 1.0 HP by the majority of US distributors with an input power of 1.1 kW and draws 9.0A. Note that LX’s own model numbering convention (WBH”150″) suggests 1.5 HP. The amperage (9.0A) is consistent across all sources and is the most reliable matching spec.

Q: Will the LX WBH150 replace my Balboa Vico Power WOW 1051057? A: Yes — the WBH150 is widely used as a direct replacement for the Vico Power WOW 1051057. Both use 1-1/2″ MBT connections with the same center discharge / bottom suction configuration and both draw 9.0A at 115V.

Q: Will this replace my Waterway Genesis 321JF10-0150? A: Yes — the WBH150 is commonly used to replace the Waterway Genesis 1 HP (9.0A) model. Both use the same 1-1/2″ MBT connection style. Verify physical clearance in your installation space — the WBH150 is 14-3/16″ long.

Q: What is the difference between WBH150 and WBC150? A: Different wet end configurations. The WBH150 has bottom suction / center discharge (same as Vico WOW and Waterway Genesis). The WBC150 has center suction / side discharge (replaces Aqua-Flo FMHP and Gecko systems). Check your existing pump’s port orientation before ordering.

Q: Does this pump include a power cord? A: The WBH150 includes a 3-foot NEMA cord with plug. The WCH150 model does NOT include a cord — you must reuse the cord from your old pump. Make sure you’re ordering the correct model.

Q: Does this pump include unions? A: Yes — both the WBH150 and WCH150 include two 1-1/2″ unions with o-rings. Note that bath pump union designs vary by manufacturer — the included unions may require cutting off your old unions and installing the new ones with PVC cement.

Q: Is this pump larger than the WBH100? A: Yes — the WBH150 is approximately 1 inch longer (14-3/16″ vs 13-3/16″) due to the larger motor. Width (5-1/4″) and height (6-15/16″) are identical. Verify clearance before ordering.

Q: Do I need an air button? A: Yes — the pump has a built-in air switch but does not include an air button or air hose. You need a separate air button (mounted on the tub deck) and 1/4″ air tubing to connect it. Standard air button hole size is 1-3/8″ for a 1-3/4″ diameter button.

Q: What voltage does this pump require? A: 115V / 60Hz. This is standard US household voltage (110-120V). Plugs into a standard GFCI-protected outlet. Do not use on 230V circuits.

Q: Is this pump UL listed? A: Yes — the WBH150 is UL Recognized and CSA Certified with IPX4 protection rating and Class B insulation.

Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding, screeching), water leaking from the seal area, reduced jet pressure, motor tripping the breaker, or failure to start.

Q: Does this replace the Hydro Air LD5A-C? A: Yes — the WBH150 is the recommended replacement for the obsolete LD5A-C and LD5A-CA Hydro Air / Magna series bath pumps.

Q: Do I need a GFCI breaker? A: Yes — GFCI protection is required by the National Electrical Code (NEC) for all whirlpool bath and spa installations.

🏆 Why Choose the LX WBH150

• ✅ Complete Package — Cord, unions, and air switch all included — no separate purchases needed
• ✅ Cost-Effective Replacement — Significantly less expensive than Waterway Genesis and Balboa WOW pumps with comparable performance
• ✅ Proven Compatibility — Direct drop-in replacement for WOW 1051057 and Genesis 321JF10 series
• ✅ Replaces Obsolete Pumps — Direct replacement for discontinued Hydro Air LD5A-C / Magna series
• ✅ Quality Construction — Glass reinforced composite housing, dry run mechanical seal, pure copper winding motor
• ✅ UL & CSA Certified — Meets North American safety standards with IPX4 protection
• ✅ 1-Year Manufacturer Warranty — Backed by Guangdong Lingxiao, one of the world’s largest bath pump manufacturers

🤝 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 in USD
• ✅ Full warranty support
• ✅ Hassle-free returns
• ✅ Air buttons, air tubing, and compatible accessories available
• ✅ Dedicated customer service team

💧 Summary

The LX Lingxiao WBH150 is a 1.0 HP, 115V, 9.0A single-speed whirlpool bath pump that provides a complete, cost-effective replacement for Balboa Vico Power WOW 1051057, Waterway Genesis 321JF10-0150, and the obsolete Hydro Air LD5A-C bath pumps. The package includes a 3-foot NEMA cord, two 1-1/2″ unions with o-rings, and a built-in air switch — everything needed for a straightforward installation. UL Recognized and CSA Certified with glass reinforced composite housing and a dry run mechanical seal. Order today from Parts4Tubs for fast US shipping and expert support.