LX 56WUA400-NF 4HP Dual-Speed Spa Pump
The LX 56WUA400-NF 4HP Dual-Speed Spa Pump is a high-performance spa pump engineered for powerful circulation in larger hot tubs and spa systems. Built with a robust 230V motor and two-speed operation, it delivers both strong high-speed flow for jets and efficient low-speed circulation for filtration cycles.
Key Features
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Model: LX 56WUA400-NF
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Horsepower: 4 HP
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Voltage: 230V
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Type: 2-Speed pump, ideal for spas requiring variable flow
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Amp Draw: 12 A (high) / 4.4 A (low)
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Frame Size: 56
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Discharge Orientation: Side discharge
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Suction & Discharge Size: 2" with unions included
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Unions: Included — simplifies installation
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Mounting: No feet/base; suitable for use with existing spa mounting bracket
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Brand: LX
This pump is designed as a direct, high-quality replacement for older LX models and is suitable for many spa plumbing configurations due to its standard union sizes.
Installation & Compatibility Notes
• You can reuse the mounting bracket and strap from your old pump — Part 6000-535 bracket is NOT included.
• Thread compatibility: LX pumps manufactured before 2015 used metric threads, while units made after 2015 use North American standard threads. If your spa plumbing uses the older metric threads, you’ll need to replace the unions and bleeder nipples to match North American standard threads.
❓ Product FAQs (SEO + Buyer Confidence)
Q: What spa models does the LX 56WUA400-NF fit?
A: This pump fits many hot tubs and spas that require a 4HP, 230V, dual-speed pump with 2-inch inlet/outlet unions. If you’re replacing an existing LX pump, it’s often a direct upgrade — just verify frame size and electrical requirements.
Q: Does this pump come with a mounting bracket?
A: No — the mounting bracket and strap are not included. You can reuse your existing bracket and strap if compatible. Part number 6000-535 is a common bracket used with this pump but must be purchased separately if needed. Dynasty Spas Parts
Q: What about metric vs standard threads on the plumbing?
A: Older LX pumps (pre-2015) used metric-threaded unions. Newer models, including this one, use North American standard threads. If your plumbing hardware is metric, you’ll need to replace unions and bleeder nipples to match the newer thread standard. Dynasty Spas Parts
Q: Can I reuse the old pump’s suction and discharge fittings?
A: Yes, if your old unions are the same standard (North American). If your system still uses metric hardware, swap to the correct unions included with this pump for proper fit-up.
Q: Is this pump energy-efficient?
A: While not a “variable speed” pump, its dual-speed design lets you run low speed for normal filtration (which draws lower amps) and high speed when you need extra jet power — improving energy usage compared to single-speed units.
Q: What voltage and amperage does this pump require?
A: This pump runs on 230V and draws approximately 12A on high speed and 4.4A on low speed — be sure your spa’s electrical system is configured for this specification.
