🔄 Sundance / Jacuzzi 6500-907 LX WTC50M Spa Circulation Pump — 0.35 HP 230V 1-Speed 48-Frame 1-1/2″ MBT | OEM Replacement

Factory-spec OEM circulation pump for 2011+ Sundance and Jacuzzi spas — direct replacement for part number 6500-907

📋 Product Overview

The 6500-907 is the OEM Sundance / Jacuzzi circulation pump — an LX Lingxiao WTC50M rated at 0.35 HP (250W), 230V/60Hz, single-speed, 48-frame with 1-1/2″ MBT connections and side discharge. This is the current-version (2011+) replacement for 24-hour circulation in Sundance and Jacuzzi spas. The pump is manufactured by LX Lingxiao (Powerful Water Technology Limited) and features the longer connection threads (longer snout) required by Sundance and Jacuzzi spa plumbing — the same pump as the WTC50M-USA. It delivers 35 GPM with a pure copper motor winding for excellent cooling and extended motor life, and a mechanical seal for watertight continuous operation. The wet end features a side discharge and center suction, and can be rotated to 4 positions (12, 3, 6, and 9 o’clock) — the pump ships with discharge at 12 o’clock (Sundance default position). The reinforced engineering plastic base with updated single-piece design provides vibration resistance and corrosion resistance. The pump draws just 1.0 amp at 230V for minimal energy consumption during 24/7 operation. Backed by a 1-year manufacturer’s limited warranty.

⚠️ Unions NOT Included: This OEM-spec version (SKU: 6500-907) does NOT include pump unions. If you need unions included, consider the WTC50M-USA version which includes 2 pump unions with O-rings. Reuse your existing unions from the old pump, or purchase replacement unions separately.

⚠️ Cord NOT Included: No power cord is supplied. Reuse your existing cord from the old pump.

⚠️ Pre-2011 Sundance Pumps: If you have the older Sundance part number 6000-907 (pre 7/11/2011), this pump is NOT the correct replacement. Use the 48WTC0153C-I (dual-voltage 115/230V LX circulation pump) instead.

⚠️ HP Rating Note: This pump is sold under various HP designations including 0.35 HP, 1/3 HP, 1/8 HP, 1/15 HP, and 1/5 HP — these all refer to the same pump. The actual power rating is 0.35 HP / 250 watts. For replacement matching, always use amperage (1.0A at 230V) rather than HP rating.

🌟 Key Features

✅ OEM Sundance / Jacuzzi 6500-907 Replacement — Factory-spec circulation pump for 2011+ Sundance and Jacuzzi spas

✅ 0.35 HP / 250W Energy-Efficient Motor — Only 1.0 amp draw at 230V for minimal electricity cost during 24/7 operation

✅ 24-Hour Continuous Circulation — Runs around the clock for constant filtration, heating, and water quality

✅ Longer Threads (USA/Sundance Spec) — Correct thread length for direct Sundance and Jacuzzi fitment

✅ Pure Copper Motor Winding — Superior cooling efficiency and extended motor life

✅ Mechanical Seal — Watertight operation for long-term continuous duty

✅ 4-Position Rotatable Wet End — 12, 3, 6, and 9 o’clock positions to match your existing plumbing

✅ 35 GPM Flow Rate — Reliable circulation for water quality and heating efficiency

✅ 48-Frame Design — Standard mounting compatible with Sundance and Jacuzzi pump compartments

✅ Reinforced Engineering Plastic Base — Updated single-piece design — vibration-resistant and corrosion-resistant

✅ UL Certified — Tested and approved for the US market

✅ 1-Year Manufacturer’s Limited Warranty — Backed by LX Lingxiao

📊 Technical Specifications

Specification	Value
Manufacturer	LX Lingxiao (Powerful Water Technology Limited)
OEM Part Number	6500-907 (Sundance / Jacuzzi)
LX Model	WTC50M (USA / long-thread version)
Pump Type	Circulation Pump — Side Discharge
Horsepower	0.35 HP / 250W (also rated as 1/3 HP, 1/15 HP, 1/8 HP — same pump)
Speed Settings	1-Speed (Single Speed)
RPM	1700 (60 Hz)
Voltage	230V
Frequency	60 Hz
Phase	Single Phase
Amperage	1.0A
Flow Rate	35 GPM
Frame Type	48 Frame
Discharge Type	Side Discharge
Suction Style	Center Suction
Discharge Size	1-1/2″ MBT (2-3/8″ outside diameter on connectors)
Suction Size	1-1/2″ MBT (2-3/8″ outside diameter on connectors)
Thread Type	Longer threads / longer snout (Sundance/Jacuzzi spec)
Wet End Rotation	90° increments (12, 3, 6, 9 o’clock) — ships at 12 o’clock
Motor Winding	Pure Copper
Seal Type	Mechanical Seal (carbon ceramic)
Base Material	Reinforced engineering plastic — updated single-piece design
Mounting Holes	Approximately 3-1/2″ center-to-center front-to-back, 4-3/8″ center-to-center side-to-side
Dimensions (L × W × H)	11-7/8″ × 6-1/2″ × 7-11/16″
Unions	❌ NOT INCLUDED — reuse existing or purchase separately
Cord	❌ NOT INCLUDED — reuse existing cord
Freeze Protection Barb	NOT INCLUDED — 3/8″ barbed fitting sold separately if needed
Certifications	UL Certified
Warranty	1-Year Manufacturer’s Limited Warranty

⚠️ Plug Note: This pump may come with a 115V-style wall plug — however, it cannot be used on a standard 115V wall outlet. This is a 230V pump. Reuse your existing pump’s wiring connections. The wiring diagram is printed on the side of the motor.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V
Frequency	60 Hz
Phase	Single Phase
Full Load Amps	1.0A
RPM	1700
Wiring Diagram	Located on the side of the motor

Wiring Connections

Terminal	Wire Color	Function
“N”	White	Neutral / Common
“L”	Black	Line / Load
Ground Screw	Green	Equipment Ground

Simply unwire your original pump and connect the wire tabs back to this pump using the same connections.

⚠️ IMPORTANT ELECTRICAL SAFETY:

All electrical installations must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Hot tubs require GFCI (Ground-Fault Circuit Interrupter) protection. A dedicated circuit is required — do not share with other appliances. This is a 230V pump — do NOT connect to a 115V circuit. Using the wrong voltage will damage the motor.

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🔗 Compatibility Guide

✅ Sundance Spa Models — Confirmed Compatible (Post 7/19/2011)

Sundance Series	Models	Year
Select Series	All models	07/19/2011+
880 Series	All models	07/19/2011+
Aspen	All models	2012+
780 Series	Certa, Montclair	04/2013+
780 Series	Hamilton, Chelsee	03/2013+

✅ Jacuzzi Spa Models — Confirmed Compatible

Jacuzzi Series	Models	Year
J-500 Series	All J-500 models	2015+
J-400 Series	All J-400 models except J-415	1/26/2012+
J-415	J-415 only	10/2/2013+
J-300 Series	J-375, J-365, J-355, J-345, J-335	2012+
J-LX / J-LXL	All models	2011+

⚠️ Pre-2011 vs Post-2011 Sundance Pump Selection

Your Existing Part Number	Date Range	Correct Replacement
6500-907 (post 7/11/2011)	07/2011 and newer	✅ This pump (6500-907 / WTC50M-USA)
6000-907 (pre 7/11/2011)	Before 07/2011	❌ Use 48WTC0153C-I instead
6500-913	Various	✅ This pump
6500-905	Various	✅ This pump
6500-920	Various	✅ This pump

Also Replaces Previous Pump Models

The 6500-907 / WTC50M replaces the older Aqua-Flo TheraMax II (model 02410512-2) circulation pump that was originally factory-installed in many Sundance and Jacuzzi spas.

6500-907 vs WTC50M-USA vs WTC50M-STANDARD — Which to Choose?

Feature	6500-907 (THIS PUMP)	WTC50M-USA	WTC50M-STANDARD
Thread Length	Longer (Sundance/Jacuzzi spec)	Longer (same as 6500-907)	SHORTER threads
Unions Included	❌ NO — unions NOT included	✅ YES — 2 unions with O-rings	✅ YES — 2 unions
Cord Included	❌ NO	❌ NO	❌ NO
Sundance / Jacuzzi Compatible	✅ YES — OEM part number	✅ YES — same pump	❌ NO — threads too short
Same Pump?	✅ Same as WTC50M-USA	✅ Same as 6500-907	❌ Different thread length
Best For	Owners reusing existing unions	Owners needing new unions	Non-Sundance/Jacuzzi spas

💡 TIP: This pump (6500-907) and the WTC50M-USA are the same pump — the only difference is that the WTC50M-USA listing includes unions and O-rings in the box. If your existing unions are in good condition, you can reuse them with this pump. If you need new unions, consider the WTC50M-USA instead.

LX Lingxiao WTC50M Circulation Pump Family

Model	Thread Length	Voltage	HP	Amps	Sundance/Jacuzzi	Notes
6500-907 / WTC50M-USA (THIS PUMP)	Longer (Sundance spec)	230V	0.35	1.0A	✅ Yes (Post 7/2011)	OEM replacement — longer snout
WTC50M-STANDARD	Shorter (Standard)	230V	0.35	1.0A	❌ No	General use — Energy Savers, Water’s Edge, etc.
WTC50MLS	Long Snout	230V	0.35	1.0A	✅ Yes	Long snout variant
48WTC0153C-I	Standard	115/230V	1/15	Varies	✅ Yes (Pre 7/2011 only)	Older dual-voltage model — for 6000-907
WCP250G	Standard	230V	0.35	—	—	Can replace WTC50M identically

Wet End Rotation Instructions

The pump ships with the discharge in the 12 o’clock position (standard Sundance position). To rotate, loosen the 4 thru-bolts on the motor side using a 7mm socket wrench, turn the wet end to the needed position (12, 3, 6, or 9 o’clock), and retighten. The pump intake (suction) is located in the front center face of the pump. Ensure proper o-ring alignment during reassembly.

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📐 Alternate Part Numbers

Sundance / Jacuzzi OEM Part Numbers

Part Number	Notes
6500-907	Primary Sundance/Jacuzzi OEM — Post 7/11/2011 models (THIS PUMP)
6500-913	Sundance/Jacuzzi OEM variant — also replaced by this pump
6500-905	Sundance/Jacuzzi OEM variant
6500-920	Sundance/Jacuzzi OEM variant
6500-903	Sundance/Jacuzzi OEM variant
SD6500-907 / SD6500907	Alternate format for 6500-907
SD6500-913 / SD6500913	Alternate format for 6500-913
SD6500-903 / SD6500903	Alternate format for 6500-903

LX Lingxiao Model Numbers

Part Number	Notes
WTC50M-USA	LX aftermarket designation — same pump as 6500-907, with unions included
WTC50M	Base LX model designation
WTC50M-A	LX variant designation

Older Sundance OEM (Pre-2011 — Use 48WTC0153C-I Instead)

Part Number	Notes
6000-907	Older Sundance OEM — Pre 7/11/2011 models — requires 48WTC0153C-I, NOT this pump
SD6000-907 / SD6000907	Alternate format for 6000-907

Industry / Distributor Cross-Reference Numbers

Part Number	Notes
34-343-1075	Industry cross-reference
1-00-0054	Distributor cross-reference
SPPRT2748	Distributor SKU
3508234	Distributor product code
M05CTW	Manufacturer code variant
ACM0846	Manufacturer code variant
JAPU5	Manufacturer code variant

Without Dashes (Search Variants)

Part Number	Notes
6500907	No-dash variant of 6500-907
6000907	No-dash variant of 6000-907
6500913	No-dash variant of 6500-913
6500903	No-dash variant of 6500-903
6500905	No-dash variant of 6500-905

Related Accessories

Part Number	Description	Notes
6540-171	Stainless steel freeze line adapter/hose barb	For freeze protection tubing
6540-263	O-ring for freeze line adapter	For 6540-171 barb fitting
402223	AMP cord for 1-speed pump	If cord replacement is needed
21086	60-inch power cord	Alternate cord option

Replacement Components

Component	Part Number	Notes
Impeller	A03070053 / 15-0050LX	LX WTC50M impeller — 105mm diameter, 6 vanes
Complete Wet End	WTC50M wet end / 02410512-2 wet end	Includes impeller, seal, faceplate, o-ring — fits all WTC50M variants
Mechanical Seal	WTC50M-MSS (aftermarket)	Carbon ceramic — synthetic rubber
Seal Kit	Available from multiple retailers	For 6500-907 LX circulation pump specifically
Faceplate O-Ring	Available separately (LX standard)	Consult retailer for LX-specific o-ring

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🛠️ Installation Requirements

Mounting

Requirement	Specification
Mounting Position	Horizontal — below water level (flooded suction)
Base	Level surface with adequate drainage
Mounting Holes	Approximately 3-1/2″ center-to-center front-to-back, 4-3/8″ center-to-center side-to-side
Mounting Base	Updated single-piece reinforced engineering plastic base
Ventilation	Protect motor from excessive moisture; ensure adequate airflow

⚠️ Mounting Hole Note: The mounting hole pattern on the new pump may not align exactly with your old pump’s mounting holes. You may need to relocate or modify the mounting bolt position on your spa floor. The updated single-piece base replaces the older small-feet design.

Plumbing

Connection	Size	Notes
Suction (Center)	1-1/2″ MBT (2-3/8″ OD)	Center intake — front face of pump
Discharge (Side)	1-1/2″ MBT (2-3/8″ OD)	Side discharge — rotatable (ships at 12 o’clock)
Unions	❌ NOT INCLUDED	Reuse existing unions from old pump or purchase separately

Installation Steps (Sundance / Jacuzzi Specific)

1. Drain spa and disconnect power at the breaker
2. Disconnect wiring from old pump — note wire positions (White=N, Black=L, Green=Ground)
3. Disconnect plumbing unions from old pump
4. Remove old pump from mounting base
5. Position new pump — rotate wet end if needed (loosen 4 thru-bolts with 7mm socket wrench)
6. Mount pump to base — drill new mounting holes if needed
7. Reconnect plumbing — reuse existing unions, ensure O-rings are in good condition
8. Reconnect wiring — White to “N”, Black to “L”, Green to ground screw
9. Fill spa and check for leaks before restoring power
10. Restore power and verify pump operation

Installation Notes

⚠️ Flooded Suction Required: Pump must be installed below water level.

⚠️ Never Run Pump Dry: Ensure the pump is primed and filled with water before starting. Running dry will destroy the mechanical seal.

⚠️ Wet End Rotation: Loosen the 4 thru-bolts on the motor side with a 7mm socket wrench, rotate to desired position, and retighten.

⚠️ Unions NOT Included: Reuse your existing pump unions. Inspect O-rings during reinstallation and replace if worn or cracked.

⚠️ Freeze Protection Barb: The 3/8″ barbed fitting (for freeze protection tubing) is NOT included. Order 6540-171 with O-ring 6540-263 separately if needed.

⚠️ GFCI Protection Required: All spa installations require GFCI protection per the NEC.

⚠️ Bonding & Grounding Required: Connect appropriate bonding and grounding conductors per NEC requirements.

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🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal area, unions, and wet end
Inspect union connections	Monthly	Hand-tighten if needed — do NOT over-tighten
Verify water circulation	Weekly	Confirm water movement through return lines
Keep motor area dry and clean	Quarterly	Protect from excessive moisture and debris
Check amperage draw	Annually	Should read approximately 1.0A at 230V
Verify GFCI operation	Monthly	Press test button to confirm proper function
Inspect mounting base	Quarterly	Ensure base is secure and pump is level

Warning Signs — Replace Pump If:

• Unusual noise (grinding, screeching, or humming without rotation)
• Water leaking from seal area between motor and wet end
• Motor repeatedly trips circuit breaker or GFCI
• No water flow when pump is running (may cause FLO error on spa pack)
• Motor overheating or burning smell
• Excessive vibration even on solid mounting
• Intermittent pump startup failure (common sign of worn bearings or failing motor)

Seal Replacement

Detail	Specification
Seal Type	Mechanical seal — carbon ceramic with synthetic rubber
Replacement Seal	WTC50M-MSS or LX-compatible mechanical seal kit

⚠️ Replace mechanical seal at first sign of water leaking from between the motor and wet end. Alternatively, the complete wet end assembly can be ordered, which includes a new seal, impeller, faceplate, and o-ring.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Sundance spas (Post 7/2011)	✅ Yes — Primary application	OEM 6500-907 replacement — longer threads required
♨️ Jacuzzi spas (J-300/J-400/J-500/J-LX series)	✅ Yes — Confirmed compatible	See Jacuzzi model chart above for year requirements
♨️ Hot tub 24-hour circulation (general)	✅ Yes	Works in any spa with 1-1/2″ MBT plumbing at 230V
♨️ Sundance spas (Pre 7/2011)	❌ No — Different model needed	Use 48WTC0153C-I for older 6000-907
♨️ Non-Sundance/Jacuzzi spas (shorter threads)	⚠️ Works but unnecessary	WTC50M-STANDARD is more economical for shorter-thread applications
♨️ 115V spa installations	❌ No — Wrong voltage	Use 48WTC0153C-I (dual voltage 115/230V) instead
♨️ Spas with 2″ plumbing	❌ No — Wrong port size	WTC50M is 1-1/2″ only
♨️ Jet pump replacement	❌ No	This is a low-HP circulation pump, NOT a jet pump

❓ Frequently Asked Questions

Q: Is this the same pump as the WTC50M-USA? A: Yes — identical pump. The 6500-907 is the OEM Sundance/Jacuzzi part number for the same LX WTC50M-USA pump. The only difference in the Parts4Tubs listings is that the WTC50M-USA SKU includes unions, while this 6500-907 SKU does NOT include unions. Choose whichever listing suits your needs — if your existing unions are in good condition, this listing saves the cost of unnecessary unions.

Q: Will this fit my Sundance spa? A: Yes — if your spa is dated post 7/2011. Compatible with Sundance Select Series (07/2011+), 880 Series (07/2011+), Aspen (2012+), 780 Certa/Montclair (04/2013+), and 780 Hamilton/Chelsee (03/2013+). If you have a pre-2011 Sundance with part number 6000-907, use the 48WTC0153C-I instead.

Q: Will this fit my Jacuzzi J-365 (or other J-series)? A: Yes — confirmed compatible with J-375/J-365/J-355/J-345/J-335 (2012+), J-400 except J-415 (1/26/2012+), J-415 (10/2013+), J-500 (2015+), and J-LX/J-LXL (2011+).

Q: Are unions included? A: No — unions are NOT included with this 6500-907 SKU. Reuse your existing unions from the old pump. If you need new unions included, purchase the WTC50M-USA version instead, which comes with 2 unions and O-rings.

Q: Is a cord included? A: No — the power cord is NOT included. Reuse your existing cord from the old pump.

Q: What is the actual horsepower? A: The actual power rating is 0.35 HP / 250 watts. Different retailers list this pump as 1/3 HP, 1/15 HP, 1/8 HP, or 1/5 HP. They all refer to the same pump. For replacement matching, use amperage (1.0A at 230V).

Q: The discharge doesn’t point the right way — how do I rotate it? A: The pump ships with discharge at 12 o’clock (standard Sundance position). Loosen the 4 thru-bolts on the motor side with a 7mm socket wrench, turn the wet end to 12, 3, 6, or 9 o’clock, and retighten. Some Jacuzzi models may need 90-degree rotation.

Q: My spa is showing a FLO error — is the circ pump bad? A: A FLO error can indicate a failing circulation pump, especially with intermittent startup failures or unusual noise. However, FLO errors can also result from dirty filters, air locks, or flow sensor issues. Replacing the circ pump often resolves persistent FLO errors in Sundance and Jacuzzi spas.

Q: The mounting holes don’t line up. Is this normal? A: Yes — the mounting base has been updated to a single-piece design. You may need to relocate or modify the mounting bolt position on your spa floor. The bottom mounting holes are approximately 3-1/2″ × 4-3/8″ center-to-center.

Q: What about the 3/8″ barbed fitting on the wet end? A: The barbed fitting for freeze protection tubing is NOT included. Order 6540-171 with O-ring 6540-263 separately if needed.

Q: I have the older 6000-907 — will this work? A: No. The 6000-907 is the pre-7/2011 Sundance part number which requires the 48WTC0153C-I (older dual-voltage LX circulation pump), NOT the WTC50M/6500-907.

Q: Do I need a GFCI breaker? A: Yes, GFCI protection is required by the NEC for all hot tub and spa installations.

Q: What warranty is included? A: 1-year manufacturer’s limited warranty. Contact Parts4Tubs for full warranty terms and support.

🏆 Why Choose the 6500-907 / WTC50M

✅ Factory OEM Replacement — Exact Sundance/Jacuzzi part number 6500-907 for guaranteed fitment in 2011+ models

✅ Proven Sundance & Jacuzzi Compatibility — Confirmed in Select, 880, 780 Series Sundance and J-300/J-400/J-500/J-LX Jacuzzi models

✅ Ultra-Quiet Operation — 1700 RPM circulation at only 1.0 amp — barely audible during continuous 24-hour operation

✅ Energy Efficient — 0.35 HP / 250W draws minimal power for significant electricity savings during 24/7 duty

✅ Pure Copper Motor Winding — Superior heat dissipation for extended motor life

✅ Mechanical Seal — Watertight performance designed for continuous operation

✅ 4-Position Rotatable Wet End — 12, 3, 6, and 9 o’clock — ships in Sundance default position

✅ Easy Installation — Same wiring connections (N/L/Ground), same plumbing unions, same mounting location

✅ UL Certified — Tested and approved for the US market

✅ 1-Year Manufacturer’s Warranty — Backed by LX Lingxiao

🤝 Why Buy From Parts4Tubs

✅ Fast shipping across the United States

✅ Expert advice from spa and hot tub specialists

✅ Competitive pricing

✅ Full warranty support

✅ Hassle-free returns

✅ Replacement seals, wet ends, and accessories available

✅ Dedicated customer service team

✨ Summary

The Sundance / Jacuzzi 6500-907 is the OEM circulation pump for 2011+ Sundance and Jacuzzi spas — an LX Lingxiao WTC50M rated at 0.35 HP (250W), 230V/60Hz, single-speed, 48-frame with side discharge and center suction, both 1-1/2″ MBT (2-3/8″ OD). Draws only 1.0 amp at 230V for ultra-quiet, energy-efficient 24-hour operation at 1700 RPM with 35 GPM flow. Features longer connection threads for Sundance/Jacuzzi fitment, pure copper motor winding, mechanical seal (carbon ceramic), and reinforced engineering plastic base with updated single-piece design. This is the same pump as the WTC50M-USA — the only difference is that unions are NOT included with this 6500-907 SKU (reuse your existing unions). Confirmed compatible with Sundance Select/880/Aspen/780 Series (2011-2013+) and Jacuzzi J-300/J-400/J-500/J-LX/J-LXL Series (2011-2015+). Also replaces 6500-913, 6500-905, 6500-920, 6500-903, and older Aqua-Flo TheraMax II pumps. Extensive cross-references include SD6500-907, 34-343-1075, 1-00-0054, SPPRT2748, 3508234, M05CTW, ACM0846, and JAPU5. Wet end rotates in 4 positions with 7mm socket wrench. Cord NOT included (reuse existing). Wiring: White→N, Black→L, Green→Ground. Dimensions: 11-7/8″ × 6-1/2″ × 7-11/16″. UL Certified. 1-year manufacturer’s limited warranty. Available now at Parts4Tubs.

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	Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBT Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring	$6.36 Max: 509 Min: 1 Step: 1 Add to cart
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Hot Tub Pump Collar & Union Size Chart

Imperial & Metric Specifications

Union Size	Collar Size	Thread OD	Union OD	O-Ring Size
1.5" Female Buttress Thread (FBT)	2.5" / 64mm (Tip to Tip) Measurement	2-1/2" 64mm	2-13/16" 71mm	2-5/16" OD 59mm
2" Female Buttress Thread (FBT)	3.1" / 78mm (Tip to Tip) Measurement	3-1/16" 78mm	3-3/8" 81mm	2-15/16" OD 75mm
2.5" Female Buttress Thread (FBT)	3.6" / 91mm (Tip to Tip) Measurement	3-5/8" 91mm	4-1/4" 108mm	3-7/16" OD 87mm

Important Notes

The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement.

Collar size is measured from thread tip to thread tip on the pump outlet.

Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications.

O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy.

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.