🔧 Laing E-10 EcoCirc 6050U0011 Spa Circulation Pump – 115V 1″ Barb

Advanced ECM technology delivers whisper-quiet, clog-resistant circulation with built-in dry run protection

📋 Product Overview

The Laing E-10 EcoCirc 6050U0011 is a 115V single-speed spa circulation pump featuring advanced Electronically Commutated Motor (ECM) technology that consumes up to 40% less energy than the previous SM909 and SM1212 series it replaces. This is the current-production Laing circulation pump with 1″ barb connections and a 4-foot bare cord included, designed for continuous 24/7 spa water circulation.

Built with a magnetically driven open impeller, the E-10 eliminates the traditional shaft seal — removing the number one failure point in conventional circulation pumps. The open impeller design is specifically engineered to resist clogging from debris, while the new 32-bit motor with side vents keeps the motor running cooler for extended life. Built-in dry run protection automatically safeguards the motor and pump if operated without water, and a soft start feature (approximately 3 seconds) reduces mechanical stress on every startup.

The E-10 delivers up to 14 GPM flow rate with a maximum head of 20 feet — optimal for low-flow heater systems in spas and hot tubs. Used as OEM equipment in major brands including Hot Springs, Dimension One, Cal Spas, Jacuzzi, and many others. The built-in mounting bracket allows installation in 4 different discharge angles, and the compact, lightweight design (under 5 lbs) fits tight equipment compartments with ease.

⭐ Key Features

• ✅ ECM Technology — Electronically Commutated AC/DC/AC Spherical Motor consumes 40% less energy than previous SM909/SM1212 series
• ✅ 115V / 0.61A / 70W — Ultra-low power consumption for pennies-per-day 24/7 operation, delivers 98W of performance for only 70W of input power
• ✅ 14 GPM Maximum Flow — Optimal circulation for low-flow heater systems with 20 ft maximum head
• ✅ Magnetically Driven Open Impeller — NO shaft seal to leak or replace, plus clog-resistant open design for trouble-free operation
• ✅ Built-In Dry Run Protection — Automatically protects motor and pump if operated without water, preventing costly damage
• ✅ Soft Start Technology — Approximately 3-second soft start reduces mechanical stress on every startup cycle
• ✅ 1″ Barb Connections — Center suction and side discharge with 1″ barb inlet and outlet
• ✅ 4-Foot Bare Cord INCLUDED — Ready for direct wiring to spa control system
• ✅ 32-Bit Motor with Side Vents — Advanced motor design with improved cooling for extended pump life
• ✅ 4 Discharge Angle Positions — Built-in mounting bracket allows installation in 4 different orientations
• ✅ 50/60 Hz Compatible — Works on both domestic (60 Hz) and international (50 Hz) electrical systems
• ✅ 1-Year Manufacturer Warranty — Full coverage from Laing Thermotech / Xylem

⚙️ Technical Specifications

Specification	Value
Manufacturer	Laing Thermotech (Xylem)
Series	E-10 EcoCirc
Model	E10-NSHNNN1W-19
Primary Part Number	6050U0011
Alternate Part Number	74069
UPC	733886740691
Pump Type	Spa Circulation Pump — 24/7 Continuous Duty
Motor Type	Electronically Commutated AC/DC/AC Spherical Motor (ECM)
Impeller Type	Magnetically Driven, Open — Clog Resistant
Shaft Seal	NONE — Magnetically Driven (No Seal Required)
Voltage	115V
Frequency	50/60 Hz (Domestic and International)
Phase	Single Phase
Amperage	0.61A
Wattage	70W Input (Delivers 98W Performance)
RPM	3,100
Speed	Single Speed
Maximum Flow Rate	14 GPM
Maximum Head	20 ft
Maximum Working Pressure	50 PSI
Maximum Temperature	140°F (60°C)
Rotation	Counter-Clockwise (Viewed from Motor End)
Suction Connection	1″ Barb — Center Suction
Discharge Connection	1″ Barb — Side Discharge
Volute Fastening	4 Bolts and 4 Nuts
Wet End Material	Thermoplastic
Discharge Positions	4 Angles via Built-In Mounting Bracket
Dimensions (L × H × W)	6″ × 4.88″ × 4.31″
Weight	Under 5 lbs
Noise Level	Under 50 dB
Power Cord	4-Foot Bare Cord INCLUDED
Mounting Bracket	INCLUDED
Protection Features	Dry Run Protection, Automatic Overload Protection, Soft Start (~3 sec)
Warranty	1-Year Manufacturer Warranty

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	115V (110V/120V same standard)
Frequency	50/60 Hz
Phase	Single Phase
Amperage	0.61A
Wattage	70W Input
Power Cord	4-Foot Bare Cord INCLUDED
Wiring	3 Wires: Hot, Neutral, Ground

⚠️ CRITICAL — 115V ONLY:

This pump operates on 115V ONLY. Do NOT connect to a 230V circuit. Using the wrong voltage will damage the motor. For 230V spas, order the Laing E-10 230V model (6050U0010 for 1″ barb or 6050U0016 for 3/4″ barb).

🔗 Compatibility Guide

Laing E-10 Family — Connection Variants

Part Number	Voltage	Connection	Cord
6050U0011 (This Pump)	115V	1″ Barb	4 ft Bare Cord
6050U0015	115V	3/4″ Barb	4 ft Bare Cord
73989	115V	3/4″ Barb	4 ft Bare Cord
6050U0013	115V	3/4″ MPT	4 ft Bare Cord
6050U0010	230V	1″ Barb	4 ft Bare Cord
73979	230V	3/4″ Barb	4 ft Bare Cord
6050U0016	230V	3/4″ Barb	4 ft Bare Cord
73999	230V	3/4″ MPT	4 ft Bare Cord

Laing E-10 vs Grundfos 43 Series Comparison

Feature	Laing E-10 6050U0011 (This Pump)	Grundfos 59896291
Voltage	115V	115V
Amperage	0.61A	0.74A
Wattage	70W	85W
Max Flow Rate	14 GPM	12-18 GPM
Max Head	20 ft	See manual
Connections	1″ Barb	1″ Barb
Motor Type	ECM (Electronically Commutated)	Wet Rotor
Shaft Seal	None (Magnetic Drive)	None (Wet Rotor)
Dry Run Protection	Yes — Built In	No
Soft Start	Yes (~3 sec)	No
Cord Included	Yes — 4 ft Bare	No
Volute Adjustment	4 Discharge Angles	Rotating (Any Angle)
50/60 Hz	Yes — Both	60 Hz
Warranty	1-Year	1-Year

💡 The Laing E-10 offers advanced ECM technology with built-in dry run protection and soft start. The Grundfos 43 Series offers a fully rotating volute for unlimited plumbing angles. Both eliminate shaft seals through different motor designs.

SM909 and SM1212 Series — Replaced By E-10

The Laing E-10 directly replaces ALL previous Laing SM909 and SM1212 series circulation pumps, consuming up to 40% less energy while providing equal or better flow rates.

Previous Model	Flow Rate	Replaced By
SM-909-NH-14 (6509, 6848)	6 GPM	E-10 6050U0011 (14 GPM)
SM-909-NH-26 (6860, 6920)	9.5 GPM	E-10 6050U0011 (14 GPM)
SM-909-NH-18 (6865, 6921)	11 GPM	E-10 6050U0011 (14 GPM)
SM-1212-NH-26 (6958, 6975)	12 GPM	E-10 6050U0011 (14 GPM)
SM-1212-NH-21 (6956)	18 GPM	E-10 6050U0011 (14 GPM)

Compatible Spa Brands (OEM Equipment)

The Laing E-10 is used as original factory equipment in spas from:

• ♨️ Hot Springs (Watkins Manufacturing)
• ♨️ Dimension One (D1)
• ♨️ Cal Spas
• ♨️ Jacuzzi
• ♨️ Sundance
• ♨️ And many other major spa manufacturers

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🔩 Alternate Part Numbers & Cross-References

Primary Part Numbers

Part Number	Description
6050U0011	Laing Primary Part Number
E10-NSHNNN1W-19	Laing Full Model Number
E10-NSHN1W-19	Laing Model Number (Abbreviated)
E10-NSHNDNN1W-08	Laing Model Number (Alternate)
74069	Laing Alternate Part Number
733886740691	UPC Code
10-0122	HydroQuip Part Number
10-0122-K	HydroQuip Kit Version
10-0123	HydroQuip Part Number
LHB07100143	HydroQuip Internal Code
1-00-0199	Allied Innovations
1-00-0199A	Allied Innovations

Previous Laing Models (Replaced By E-10)

Part Number	Model / Notes
SM-909-NH-14	SM909 Series — 6 GPM
SM-909-NH-18	SM909 Series — 11 GPM
SM-909-NH-26	SM909 Series — 9.5 GPM
SM-1212-NH-21	SM1212 Series — 18 GPM
SM-1212-NH-26	SM1212 Series — 12 GPM
SM-303	SM303 Series
LAISM909NH142	SM909 Model Code
LAISM909NH1834	SM909 Model Code
LAISM909NH26120	SM909 Model Code
LAISM1212NH211	SM1212 Model Code
LAISM1212NH2612	SM1212 Model Code
SM1212NH-21-120	SM1212 Model Code
SM909NH	SM909 Model Code

Dimension One (D1) Cross-References

Part Number	Notes
6425.9	Dimension One Spa Circ Pump
64259	Dimension One (Alternate Format)

Sundance / Jacuzzi Cross-References

Part Number	Notes
6509	SM-909-NH-14 — 6 GPM
6848	SM-909-NH-14
6860	SM-909-NH-26 — 9.5 GPM
6865	SM-909-NH-18 — 11 GPM
6920	SM-909-NH-26
6921	SM-909-NH-18
6956	SM-1212-NH-21 — 18 GPM
6957	SM-1212-NH-19
6958	SM-1212-NH-26 — 12 GPM
6975	SM-1212-NH-26
7165	SM-909-NH-14

Other Industry Cross-References

Part Number	Notes
313663	Industry Cross-Reference
611594	Industry Cross-Reference
901112	Industry Cross-Reference
9333-0	Industry Cross-Reference
9338-30	Industry Cross-Reference
9338-31	Industry Cross-Reference
9339-04	Industry Cross-Reference
733886695601	UPC Cross-Reference

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🛠️ Installation Requirements

What’s in the Box

• ✅ Laing E-10 EcoCirc Circulation Pump
• ✅ 4-Foot Bare Cord (Pre-Wired)
• ✅ Built-In Mounting Bracket
• ❌ Unions / Fittings — NOT INCLUDED (Order Separately)

Mounting

Requirement	Specification
Mounting Position	Horizontal — Motor must remain dry
Bracket	Built-in mounting bracket with 4 discharge angle positions
Base	Solid, level surface
Ventilation	Side vents must remain clear for motor cooling
Access	Sufficient clearance for service and maintenance

Plumbing

Connection	Size
Suction	1″ Barb — Center
Discharge	1″ Barb — Side
Volute Fastening	4 Bolts and 4 Nuts

Installation Notes

⚠️ Pump must be installed below water level (flooded suction) to operate properly.

⚠️ Built-in dry run protection will shut down the pump if operated without water — however, always ensure flooded suction before starting.

⚠️ 4-foot bare cord requires wiring to spa control system — connect hot, neutral, and ground wires per your spa’s wiring requirements.

⚠️ Soft start feature provides approximately 3-second gradual startup — this is normal operation, not a fault.

⚠️ Counter-clockwise rotation when viewed from the motor end — do not attempt to reverse.

⚠️ GFCI protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.

⚠️ Keep motor side vents clear of debris for proper cooling.

⚠️ 115V ONLY — verify your spa’s voltage before ordering. For 230V, order 6050U0010 (1″ barb) or 6050U0016 (3/4″ barb).

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🔄 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Around barb connections and hose clamps
Inspect hose clamps	Monthly	Tighten if needed
Check flow rate	Monthly	Reduced flow indicates blockage
Inspect motor side vents	Quarterly	Keep clear of debris for cooling
Verify quiet operation	Quarterly	Unusual noise indicates bearing wear
Check mounting bracket	Quarterly	Tighten if loose
Clean open impeller area	As Needed	Remove any debris if flow decreases

Warning Signs — Replace Pump If:

• Unusual noise (grinding, humming, rattling)
• Motor overheating excessively
• Reduced or no water flow despite clear suction
• Motor trips breaker repeatedly
• Pump fails to start after soft start period
• Dry run protection activates repeatedly with water present

Magnetically Driven Impeller — NO Seal Replacement Needed

The Laing E-10 uses a magnetically driven impeller with NO mechanical shaft seal. Unlike conventional shaft-seal pumps (Gecko CMHP, Waterway Iron Might, Balboa) where the seal is the most common failure point, the E-10’s magnetic drive completely eliminates this component. There is no seal to leak, wear out, or replace — ever.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ 24/7 Spa Circulation	✅ Yes — Primary Use	Continuous duty low-flow heater circulation
♨️ Low-Flow Heater Systems	✅ Yes — Primary Use	14 GPM max flow, 20 ft max head
♨️ Replacement Laing SM909 / SM1212	✅ Yes — Direct Replacement	Replaces ALL SM909 and SM1212 models
♨️ Hot Springs / Watkins Spas	✅ Yes	OEM factory equipment
♨️ Dimension One (D1) Spas	✅ Yes	Replaces 6425.9
♨️ Jacuzzi / Sundance Spas	✅ Yes	Verified cross-reference
♨️ Cal Spas	✅ Yes	Verified OEM replacement
♨️ Ozone Treatment Systems	✅ Yes	Compatible with ozone injection
♨️ Saltwater Spa Systems	✅ Yes	Saltwater compatible
♨️ Chilling Systems	✅ Yes	Compatible application
🛁 1-1/2″ MBT Plumbing	❌ No	Use Gecko Aqua-Flo CMHP for 1-1/2″ connections
🛁 230V Spa	❌ No — 115V Only	Use 6050U0010 (1″ barb) or 6050U0016 (3/4″ barb) for 230V
🛁 High-Flow 40+ GPM	❌ No	Use Gecko CMHP for high-flow requirements

❓ Frequently Asked Questions

Q: What is the flow rate of this pump? A: Maximum 14 GPM with a maximum head of 20 feet. Designed for continuous 24/7 low-flow heater spa circulation.

Q: What is the amperage draw? A: 0.61A at 115V, consuming just 70W of input power while delivering 98W of performance through ECM technology.

Q: Does this pump come with a power cord? A: Yes. A 4-foot bare cord is included and pre-wired to the pump. Connect the hot, neutral, and ground wires to your spa’s control system.

Q: What size are the connections? A: 1″ barb inlet (center suction) and 1″ barb outlet (side discharge). For spas with 3/4″ plumbing, consider the Laing E-10 model 6050U0015 or 73989 with 3/4″ barb connections instead.

Q: Does this replace the Laing SM909 and SM1212 series? A: Yes. The E-10 directly replaces ALL SM909 and SM1212 series models while consuming up to 40% less energy and providing equal or better flow rates.

Q: Does this pump have a shaft seal? A: No. The E-10 uses a magnetically driven impeller that completely eliminates the mechanical shaft seal. There is no seal to leak, wear out, or replace.

Q: What is dry run protection? A: The E-10 has built-in electronics that automatically detect when the pump is running without water and shut it down to prevent motor and pump damage. This protects against accidental dry operation.

Q: What is the soft start feature? A: The pump gradually ramps up to full speed over approximately 3 seconds on every startup. This reduces mechanical stress and extends pump life. The brief startup delay is normal operation, not a fault.

Q: What spa brands use this pump? A: The Laing E-10 is OEM equipment in Hot Springs (Watkins), Dimension One (D1), Cal Spas, Jacuzzi, Sundance, and many other major spa brands.

Q: Can I adjust the discharge angle? A: Yes. The built-in mounting bracket allows installation in 4 different discharge positions to match your existing plumbing configuration.

Q: What voltage does this pump require? A: 115V ONLY (also referenced as 110V or 120V — same standard). Works on both 50 Hz and 60 Hz. For 230V, order the Laing E-10 model 6050U0010 (1″ barb) or 6050U0016 (3/4″ barb).

Q: Is this pump quiet? A: Yes, extremely. The E-10 operates at under 50 dB — virtually silent. The ECM motor with soft start technology contributes to whisper-quiet operation.

Q: What is the difference between this pump and the Grundfos 59896291? A: Both are 115V, 1″ barb circulation pumps with no shaft seal. The Laing E-10 offers ECM technology, dry run protection, and soft start. The Grundfos offers a fully rotating volute (any angle vs 4 positions). The Grundfos is typically more affordable. Both are excellent choices — the Laing offers more built-in protection features.

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

Q: What warranty is included? A: 1-year manufacturer warranty from Laing Thermotech / Xylem. Contact Parts4Tubs for full warranty terms and support.

🏆 Why Choose the Laing E-10 EcoCirc 6050U0011

• ✅ ECM Motor Technology — Advanced electronically commutated motor consumes 40% less energy than the SM909/SM1212 series it replaces
• ✅ Built-In Dry Run Protection — Automatic electronic protection prevents costly motor and pump damage from operating without water
• ✅ Soft Start Technology — Gradual 3-second startup reduces mechanical stress and extends pump life
• ✅ Magnetically Driven Open Impeller — NO shaft seal to leak or replace, PLUS clog-resistant open design
• ✅ Whisper-Quiet Operation — Under 50 dB for virtually silent running that won’t disturb spa enjoyment
• ✅ 98W Performance from 70W Input — ECM technology delivers more flow per watt than conventional circ pumps
• ✅ 4-Foot Bare Cord INCLUDED — Ready for immediate installation, no separate cord purchase required
• ✅ 50/60 Hz Compatible — Works on both domestic and international electrical systems
• ✅ Proven OEM Choice — Factory-installed in Hot Springs, Dimension One, Cal Spas, Jacuzzi, and other major brands
• ✅ Compact and Lightweight — Under 5 lbs with 4 discharge angle positions for flexible installation
• ✅ Laing Thermotech / Xylem Quality — Decades of proven reliability in spa circulation technology
• ✅ 1-Year Manufacturer Warranty — Full coverage for peace of mind

🤝 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
• ✅ Complete Laing E-10 family in stock (115V and 230V, all connection types)
• ✅ Dedicated customer service team

The Laing E-10 EcoCirc 6050U0011 is a 115V spa circulation pump with advanced ECM technology, delivering up to 14 GPM while consuming just 0.61A and 70W. Featuring built-in dry run protection, soft start technology, a magnetically driven clog-resistant open impeller with no shaft seal, and a 4-foot bare cord included, this pump replaces all previous Laing SM909 and SM1212 series models. Used as OEM equipment in Hot Springs, Dimension One, Jacuzzi, and many other major spa brands. Order from Parts4Tubs today for fast shipping and expert support.

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.