⚡ Pentair Booster Pump for Pressure-Side Pool Cleaners — 3/4 HP 115V/230V E-Commerce | EC-LA01N

The same trusted Pentair Letro booster pump with enhanced 1-year online warranty — powers every pressure-side pool cleaner

📋 Product Overview

The Pentair EC-LA01N is the e-commerce designated version of the legendary Pentair Letro LA01N Universal Booster Pump — a 0.75 HP (3/4 HP), 115/230V dual-voltage booster pump built to power all pressure-side automatic pool cleaners. This is the exact same pump as the LA01N in every way — same motor, same wet end, same performance, same installation — with one key advantage for online buyers: an enhanced 1-year parts-only warranty (compared to the standard 60-day warranty on OEM LA01N purchases).

The EC-LA01N delivers 50 PSI at 12 GPM — the dedicated water pressure your Polaris 280, Polaris 380, Polaris 3900 Sport, Kreepy Krauly Racer, Legend Platinum, Legend Platinum Truck Series, and Legend Automatic Pool Cleaners need to navigate pool floors, walls, and the waterline effectively. The single-speed 56CZ frame motor runs at 3,450 RPM with a 1.5 service factor (effective SFHP of 1.13), drawing 13.0 amps at 115V or 6.5 amps at 230V.

The pump body is constructed from durable, corrosion-proof materials engineered for long-term exposure to treated pool water. 3/4″ NPT threaded ports handle intake and discharge, connecting to your pool’s plumbing via the included installation kit — 6 feet of soft tube hose and 4 connectors for straightforward hookup. The fully serviceable design means the PS-1000 shaft seal, LA05L impeller, LA39534 volute, and Century B668 motor can all be individually replaced as needed, extending the pump’s useful life well beyond a single component failure.

The EC-LA01N is not self-priming — it must only operate while your main pool circulation/filter pump is running. This is standard for all booster pumps, which draw pressurized water from the return side of your existing filtration system.

💡 EC-LA01N vs. LA01N: These are the exact same pump. The “EC-” prefix indicates this is the E-Commerce (online purchase) version. The only difference is warranty terms: EC-LA01N receives a 1-year parts-only warranty, while the OEM LA01N receives a standard 60-day warranty (with extended warranty available only through a qualified installer). For online buyers, the EC-LA01N actually provides better warranty coverage.

⚠️ NOT SELF-PRIMING: This booster pump must only run when your main filter/circulation pump is running. Operating the booster pump without the main pump can cause damage.

💡 BOOSTER PUMP vs. CIRCULATION PUMP: This is a pool booster pump for pressure-side cleaners — not a spa circulation pump. If you need a spa circulation pump, see Laing E5, E10, or E14 models.

✨ Key Features

✅ Same Pump as LA01N — Exact same Pentair Letro booster pump with e-commerce 1-year warranty

✅ 0.75 HP Motor with 1.5 Service Factor — Effective SFHP of 1.13 — powerful, efficient performance

✅ Dual Voltage — 115V / 230V — Versatile installation with either voltage

✅ 50 PSI at 12 GPM — Consistent dedicated pressure for thorough pool cleaning

✅ Universal Compatibility — Powers Polaris 280, 380, 3900 Sport, Kreepy Krauly, Legend, and all pressure-side cleaners

✅ 3/4″ NPT Ports — Standard threaded intake and discharge connections

✅ 56CZ Frame Motor — 3,450 RPM — Industry-standard frame for easy motor replacement

✅ Corrosion-Proof Construction — Durable materials built for pool water chemistry

✅ Installation Kit Included — 6′ soft tube hose + 4 connectors — ready to install

✅ Fully Serviceable — Replaceable seal (PS-1000), impeller (LA05L), volute (LA39534), motor (B668)

✅ Quiet Operation — Smooth, reliable motor design minimizes noise

✅ 1-Year Parts-Only Warranty — Enhanced warranty for online purchases

🔩 Technical Specifications

Specification	Value
Manufacturer	Pentair (formerly Letro / Sta-Rite)
Part Number (E-Commerce)	EC-LA01N (THIS PUMP)
Part Number (OEM Equivalent)	LA01N
Pump Type	Booster Pump — Single Speed — for Pressure-Side Pool Cleaners
Motor Horsepower	0.75 HP (3/4 HP)
Service Factor	1.5
Service Factor HP (SFHP)	1.13
Voltage	115V / 230V (dual voltage)
Frequency	60 Hz
Phase	Single Phase
Amperage (115V)	13.0A
Amperage (230V)	6.5A
RPM	3,450
Motor Frame	56CZ
Motor Shaft	Threaded — 1/2-20 UNF-2A RH
Motor Rotation	Clockwise (CW) — non-reversible
Motor Thermal Protection	Automatic
Replacement Motor	Century (A.O. Smith) B668
Flow Rate	12 GPM
Pressure	50 PSI (at 12 GPM)
Port Size (Intake)	3/4″ NPT
Port Size (Discharge)	3/4″ NPT
Self-Priming	❌ No — requires main circulation pump to be running
Shaft Seal	PS-1000 — 5/8″ shaft — Buna
Impeller	LA05L (new style)
Volute	LA39534 (new style — with drain plug — 3/4″)
Seal Bracket	LA295 (new style)
Construction	Corrosion-proof materials
Dimensions (L × W × H)	Approximately 16″ × 9″ × 12″
Weight	30 lbs
Installation Kit	✅ INCLUDED — 6′ soft tube hose + 4 connectors (part 353020)
Model Production	1997 – Current
Warranty	1-year parts-only (EC- e-commerce purchase)

⚡ Electrical Requirements

Electrical Spec	115V	230V
Supply Voltage	115V	230V
Frequency	60 Hz	60 Hz
Phase	Single	Single
Full Load Amps	13.0A	6.5A
Motor Frame	56CZ	56CZ
RPM	3,450	3,450

Wiring Notes

The motor can be wired for either 115V or 230V operation. Refer to the wiring diagram on the motor label or in the installation manual for proper connection.

⚠️ GFCI REQUIRED: Connect only to a branch circuit protected by a Ground-Fault Circuit Interrupter (GFCI). Required by the NEC for all pool pump installations.

⚠️ DEDICATED CIRCUIT: The booster pump requires its own dedicated circuit. Do not share with other equipment.

⚠️ TIME CLOCK RECOMMENDED: Use a time clock to sequence the booster pump with your filter pump. The booster pump should turn on after the filter pump and turn off before the filter pump.

⚠️ MANUAL SWITCH: Install a manual switch between the time clock and booster pump for convenient on/off control.

⚠️ LICENSED ELECTRICIAN: All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes.

🔗 Compatibility Guide

Compatible Pressure-Side Pool Cleaners

Cleaner	Compatibility	Notes
Polaris 280	✅ Compatible	Requires booster pump
Polaris 380	✅ Compatible	Requires booster pump
Polaris 3900 Sport	✅ Compatible	Requires booster pump
Pentair Legend Platinum	✅ Compatible — OEM	Designed for this pump
Pentair Legend Platinum Truck Series	✅ Compatible — OEM	Designed for this pump
Pentair Legend Automatic Pool Cleaner	✅ Compatible — OEM	Designed for this pump
Kreepy Krauly Racer	✅ Compatible	Pentair pressure-side cleaner
Kreepy Krauly Legend II	✅ Compatible	Pentair pressure-side cleaner
Any pressure-side cleaner requiring booster pump	✅ Universal	EC-LA01N is a universal booster pump

NOT Compatible With

Type	Notes
Suction-side cleaners (Kreepy Krauly, Hayward Navigator, etc.)	❌ Suction cleaners do not require a booster pump
Robotic cleaners (Dolphin, Polaris Sport, etc.)	❌ Robotic cleaners are self-powered
Pressure-side cleaners that do NOT require a booster (Polaris 360, 65, etc.)	❌ Not needed — these run off main pump pressure

EC-LA01N vs. LA01N — Understanding the Difference

	EC-LA01N (THIS PUMP)	LA01N
Physical Pump	Identical	Identical
Motor	Same — 0.75 HP, 56CZ, 3450 RPM	Same
Wet End	Same — PS-1000 seal, LA05L impeller, LA39534 volute	Same
Performance	Same — 50 PSI at 12 GPM	Same
Installation Kit	Same — 353020 (6′ hose + 4 connectors)	Same
Purchase Channel	E-Commerce (online retailers)	OEM (dealer/retail stores)
Standard Warranty	✅ 1-year parts-only	60-day standard
Extended Warranty	❌ Not eligible	Available with qualified installer
Best For	✅ Online / DIY buyers	Buyers with a pool professional installer

💡 For online buyers, the EC-LA01N is the better choice — you get the exact same pump with a 1-year parts-only warranty instead of the standard 60-day warranty. The only tradeoff is EC- products are not eligible for the bundled 3-year extended warranty that requires installation by a qualified Pentair installer.

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📐 Replacement Parts

Key Replacement Components

Part Number	Description	Notes
B668	Century (A.O. Smith) replacement motor — 0.75 HP, 56CZ, 3450 RPM	Motor only — reuse existing wet end
PS-1000	Shaft seal — 5/8″ shaft, Buna	Most common maintenance item
071734S	Seal kit (PS1000 WFE)	Also fits WhisperFlo, IntelliFlo pumps
LA05L	Impeller — new style	Current production
LA02L	Impeller — old style	For older pumps — verify before ordering
LA39534	Volute with drain plug — 3/4″ — new style	Current production
LA295	Seal bracket — new style	Current production
LA415	Seal bracket O-ring — new style	Replace when servicing seal
LA375	Drain plug O-ring — new style	Replace during annual service
LA115	Bolt — 5/16″ × 2.5″ — volute (qty 2 needed)	Hardware
LLA125	Nut — 5/16″ — volute (qty 2 needed)	Hardware
353020	Hose kit — 6′ hose + fittings — new style	Replacement installation hose kit
LB03B	Hose adapter	For cleaner connection
LB05	Suction hose	Inlet hose
LD10	Hose washer (pack of 2)	Seal hose connections
EB20	Sweep hose adjustment screw — white	For Legend cleaners

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🛠️ Installation Requirements

What’s in the Box

Item	Included	Notes
Pentair EC-LA01N booster pump	✅ Yes	Complete pump with motor — identical to LA01N
Installation hose kit (353020)	✅ Yes	6′ soft tube hose + 4 connectors
Hose adapters	✅ Yes	Included per Pentair
Owner’s manual	✅ Yes	Installation and operation instructions

Mounting

Requirement	Specification
Location	Near pool equipment pad — close to filter pump return line
Base	Solid, level pad or equipment platform
Position	Motor must remain dry — protect from rain and sprinkler spray
Ventilation	Ensure adequate airflow around motor for cooling
Access	Allow space for plumbing connections and maintenance

Plumbing

Connection	Size	Notes
Intake (suction)	3/4″ NPT	Connects to return line from filter pump
Discharge	3/4″ NPT	Connects to pressure-side cleaner wall fitting
Hose	Included 6′ soft tube hose	Use included connectors and adapters

Installation Notes

⚠️ NOT SELF-PRIMING: Your main filter/circulation pump must be running before and during booster pump operation. The booster pump draws pressurized water from the return side of your filtration system.

⚠️ TIME CLOCK SEQUENCING: Set your time clock so the booster pump turns on after the filter pump starts and turns off before the filter pump stops.

⚠️ MANUAL SWITCH: Install a manual switch between the time clock and booster pump for convenient on/off control without accessing the time clock.

⚠️ NEVER RUN WITHOUT MAIN PUMP: Operating the booster pump without the filter system running can cause overheating and damage.

⚠️ PRESSURIZED SYSTEM WARNING: Pool circulation systems operate under high pressure. When servicing any part of the system, air can enter and become pressurized. Pressurized air can cause pump housing covers, filter lids, and valves to violently separate, resulting in severe injury or death. Follow all safety procedures in the owner’s manual.

⚠️ GFCI REQUIRED: Connect only to a GFCI-protected branch circuit per NEC requirements.

⚠️ QUALIFIED INSTALLER RECOMMENDED: Pentair recommends installation and service by a qualified pool service professional.

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⚙️ Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for water leaks	Monthly	Around seal bracket, volute, and hose connections
Inspect hose and connectors	Monthly	Replace if cracked, kinked, or leaking
Check shaft seal (PS-1000)	Annually	Replace at first sign of leaking — most common maintenance
Inspect impeller (LA05L)	Annually	Check for wear, cracks, or debris
Check volute drain plug O-ring (LA375)	Annually	Replace if worn
Verify motor amperage	Annually	Should match nameplate (13.0A at 115V / 6.5A at 230V)
Clean strainer/debris from intake	As needed	Remove any obstructions
Check mounting and vibration	Quarterly	Tighten bolts if loose
Winterize (if applicable)	Before freeze season	Drain pump completely; remove drain plug

Warning Signs — Service or Replace Pump If:

• Water leaking from shaft seal area
• Motor trips breaker or GFCI repeatedly
• Unusual noise (grinding, screeching, humming)
• Pool cleaner moving sluggishly or not at all
• Motor overheating or hot to the touch
• Reduced water pressure at cleaner
• Visible corrosion on volute or seal bracket

Shaft Seal Replacement

The PS-1000 shaft seal (5/8″ shaft, Buna) is the most common maintenance item. Replace at the first sign of leaking from the seal area. When replacing the seal, also replace the LA415 seal bracket O-ring and inspect the LA375 drain plug O-ring.

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🎯 Ideal Applications

Application	Suitability	Notes
💪 Polaris 280 / 380 / 3900 Sport	✅ Yes — Primary use	Universal booster pump
💪 Pentair Legend Platinum / Legend / Kreepy Krauly Racer	✅ Yes — OEM	Designed specifically for these cleaners
💪 Any pressure-side pool cleaner requiring booster pump	✅ Yes — Universal	50 PSI at 12 GPM
💪 Replacement for existing LA01N booster pump	✅ Yes — Identical pump	EC-LA01N = LA01N with 1-year warranty
♨️ Spa or hot tub circulation	❌ No — Wrong type	Use Laing E5, E10, or E14
💧 Suction-side pool cleaners	❌ No — Not needed	Suction cleaners don’t use booster pumps

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❓ Frequently Asked Questions

Q: Is the EC-LA01N the same pump as the LA01N? A: Yes — identical pump in every way. Same motor, same wet end, same performance (50 PSI at 12 GPM), same installation kit. The “EC-” prefix simply indicates this is the e-commerce (online purchase) version with different warranty terms.

Q: What’s the warranty difference between EC-LA01N and LA01N? A: The EC-LA01N receives a 1-year parts-only warranty — better for online/DIY buyers than the LA01N’s standard 60-day warranty. However, EC- products are not eligible for the bundled 3-year extended warranty that requires installation by a qualified Pentair installer.

Q: What cleaners is this compatible with? A: All pressure-side pool cleaners requiring a booster pump, including Polaris 280, 380, 3900 Sport, Kreepy Krauly Racer, Legend Platinum, Legend Platinum Truck Series, and Legend Automatic Pool Cleaners.

Q: Is this pump self-priming? A: No — the EC-LA01N is not self-priming. Your main pool filter/circulation pump must be running before and during booster pump operation.

Q: What voltage does this pump use? A: 115V or 230V — dual voltage. At 115V it draws 13.0 amps; at 230V it draws 6.5 amps. The motor can be wired for either voltage.

Q: What size are the ports? A: Both intake and discharge are 3/4″ NPT threaded.

Q: Does this come with an installation kit? A: Yes — includes an installation hose kit (353020) with 6 feet of soft tube hose, 4 connectors, and hose adapters.

Q: What is the most common replacement part? A: The PS-1000 shaft seal (5/8″ shaft, Buna). Replace at the first sign of leaking from the seal area.

Q: What motor does this pump use? A: The Century (A.O. Smith) B668 — 0.75 HP, 3450 RPM, 115/230V, 56CZ frame, threaded shaft.

Q: Do I need a time clock? A: Recommended. Sequence the booster pump with your filter pump — the booster should turn on after the filter pump and turn off before it.

Q: How heavy is this pump? A: Approximately 30 lbs.

Q: Can I use this to replace a Polaris PB4-60 booster pump? A: The EC-LA01N is a universal booster pump compatible with all pressure-side cleaners including Polaris models. Verify plumbing connections match — the LA01N uses 3/4″ NPT ports. Plumbing adapters may be needed depending on your existing setup.

Q: Do I need a GFCI breaker? A: Yes — GFCI protection is required by the NEC for all pool pump installations.

Q: What warranty is included? A: 1-year parts-only warranty for this EC- (e-commerce) purchase. Visit pentair.com/warranty for full details and to register your product.

🏆 Why Choose the Pentair EC-LA01N

✅ 1-Year Parts-Only Warranty — Enhanced warranty for online buyers vs. standard 60-day

✅ Exact Same Pump as LA01N — Identical Pentair quality, performance, and reliability

✅ Pentair Quality — One of the most trusted names in pool and spa equipment worldwide

✅ Universal Compatibility — Powers all pressure-side pool cleaners requiring a booster pump

✅ 50 PSI at 12 GPM — Consistent dedicated pressure for thorough pool cleaning

✅ 0.75 HP with 1.5 Service Factor — Powerful motor with built-in operating margin

✅ Dual Voltage (115V / 230V) — Flexible installation for any electrical setup

✅ 56CZ Frame Motor — Industry-standard for easy, affordable motor replacement

✅ Corrosion-Proof Construction — Built for years of service in pool water chemistry

✅ Installation Kit Included — 6′ hose + 4 connectors + adapters — ready to install

✅ Fully Serviceable — Every component individually replaceable

✅ Proven Design Since 1997 — Decades of reliable service

🤝 Why Buy From Parts4Tubs

✅ Fast shipping across the United States

✅ Expert advice from pool and spa specialists

✅ Competitive pricing

✅ Full warranty support — 1-year parts-only for EC- products

✅ Hassle-free returns

✅ Replacement seals (PS-1000), impellers (LA05L), volutes, and all parts available

✅ Dedicated customer service team

💫 Summary

The Pentair EC-LA01N is the e-commerce version of the Pentair Letro LA01N Universal Booster Pump — the exact same 0.75 HP, 115/230V dual-voltage booster pump with an enhanced 1-year parts-only warranty for online buyers. Delivers 50 PSI at 12 GPM through 3/4″ NPT ports with a 56CZ frame motor at 3,450 RPM (13.0A at 115V / 6.5A at 230V). 1.5 service factor (SFHP 1.13). Built from corrosion-proof materials with a fully serviceable design — PS-1000 shaft seal, LA05L impeller, LA39534 volute, and Century B668 motor all individually replaceable. Not self-priming — requires main circulation pump running. Installation kit included (353020 — 6′ hose + 4 connectors + adapters). 30 lbs, approximately 16″ × 9″ × 12″. Compatible with Polaris 280, 380, 3900 Sport, Kreepy Krauly Racer, Legend Platinum, and all pressure-side pool cleaners. In production since 1997. The EC- designation provides better warranty coverage (1-year vs 60-day) for online/DIY purchasers. Available now at Parts4Tubs.

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.