By Pentair Pool Products



Part # 011511

Warranty 1 Year (See Pentair Warranty Card)

Manufacturer Code WFE-2

Alternate Part #'s PEN011511, PUR-10-406

Product Description

Inyo Recommended Pumps

WHISPERFLO incorporates innovative hydraulic engineering to move water more efficiently and quietly than competitive pumps. Under typical operating conditions, WHISPERFLO offers the greatest water flow of any high performance pump—yet with the lowest electrical consumption. To circulate more water in less time and at the lowest cost, choose quiet, reliable, WHISPERFLO.

Commonly Replaced Parts (Click on Link to view/purchase):

 Additional features include:

  • Lower operating costs. Less horsepower required to produce needed water flow, even when used in pool/spa combinations and when operating in-floor cleaning systems.
  • Extremely quiet operation documented in rigorous ETL tests.
  • Patented oversized strainer basket reduces cleaning frequency.
  • 1 year warranty
  • High-efficiency impeller maximizes water flow.
  • Life-extending diffuser wear-ring prevents uneven impeller wear.
  • Thicker seal plate withstands loss of prime conditions.
  • Available in standard and energy-efficient models.


  • Pipe Size = 2"

Pentair Whisperflo Dimensions

Pentair Whisperflo Pump Curve
Click here for more Pentair Pumps

Product Specifications

1/2 HP
Port Size:
2 in.
Service Factor:
Total HP:
0.95 HP

?     Asked on 11/3/2022by Larry spires

I only need the 1/2 hp wisper flow motor thanks Larry

A  Answered on 11/7/2022 by InyoPools Product Specialist Craig C.

Hello Larry.  The Century 1/2 HP Square Flange 56Y Full Rate Motor - B2846 is compatible with the Pentair WhisperFlo models WF-2 & WFE-2, Single Speed 1/2 HP Pool Pumps.  The Tune Up Kit Pentair/Purex Whisperflo - GOKIT32 contains the seals and gaskets required for the new motor installation.

?     Asked on 9/1/2020by MarioF

I have a 11500 gal pool running a Pentair WhisperFlo Pro 2hp pump, sitting about 14ft away from the pool. How long (hrs/day) should I run my filter pump. Thanks a lot,

A  Answered on 12/21/2020 by InyoPools Product Specialist Hector F.

Hi Mario, there are few variables to consider when calculating the number of hours a pool pump needs to run. Here is a guide that we put together called "How Long Should I Run My Pool Pump?" that should assist with that. 

?     Asked on 1/23/2020by Casey Cho

I see that B845 and B846 (and B2846) are all recommended as replacement motors for my Pentair Whisperflo WFE-2 model 011511 pump. What is the difference ?

A  Answered on 1/23/2020 by InyoPools Product Specialist Lennox H.

Hi, Casey. The B2845 is the correct replacement motor for the WFE-2 model pump. The B2845 is an energy-efficient motor and the B2846 is the standard option that is used with the WF-2 / 011578 model. 

?     Asked on 9/2/2019by John Power

Our HOA has a decorative fountain at the entrance. It uses a Pentair WFE-2 pump for circulation. The pump has failed. When I look at the WFE-2 spec's the amperage does not match the amperage listed on the current pump motor. I have a 1/2hp 1.9SF, .98 SFHP on one decal. The motor plate shows 6.0-5.6/11.2 amps with a part number of 7-177449-03. The WFE-2 on the Inyo website lists 4.5-4.4/8.8 amps. Is this the correct replacement pump?

A  Answered on 9/2/2019 by InyoPools Product Specialist Lennox H.

Hi, John. This is the correct replacement. The motor currently used is motor energy efficient. 

?     Asked on 3/26/2019by Inyo Visitor

How many gph is this pump? If I change this pump to 110 volts will it affect gph?

A  Answered on 3/26/2019 by InyoPools Product Specialist Michelle B.

Hello, In order to calculate this for you, we will need to know the total dynamic feet you have on your pool. Here is a helpful link on how to do so.

?     Asked on 7/18/2018by Inyo Visitor

i need to find a pump for swimming pool - I want to also run a 36" cascade fountain off the pool - do i need 2 pumps. The pool dimensions are 18' by 11', depth 5'

A  Answered on 7/18/2018 by InyoPools Product Specialist Lennox H.

Hi. To determine what size pump you need for your pool check out our How to Size a Pool PumpHow Do I Calculate Feet of Head for My Pool? and How To Measure Total Dynamic Head With Gauges guides. 

?     Asked on 5/23/2018by Ed

Can this pump be set for 230V ?

A  Answered on 5/23/2018 by InyoPools Product Specialist Patrick P.

Hi Ed, yes this pump can be wired either 230V or 115V.

?     Asked on 5/23/2018by John

I am having a Pentair Whisperflo 1/2 HP 011511 pump installed and will be running it with 115V power. The wiring diagram on the motor shows "Line" labeled for both terminal 1 and terminal 2 (assuming both hot for 230V setup). For 115V wiring, does it matter which line is hot and which line is nuetral? I could not find it specified anywhere.

A  Answered on 5/25/2018 by InyoPools Product Specialist Lennox H.

Hi, John. You can use our How To: Wire WhisperFlo & Similar Pumps For 115V guide to assist you with wiring your motor. 

?     Asked on 11/9/2017by Michael Clayton

Does the Whisperlfow 011511 1/2hp pump also include the motor assembly as well - as shown in the picture? Or are the motor and pump sold separately? Thank you, Michael

A  Answered on 11/9/2017 by InyoPools Product Specialist Lennox H.

Hi, Michael. This pump is complete with the motor. 

?     Asked on 5/31/2017by dave-morin

I have a interior 5000gal small pool need good economical pool pump with filter can you advise I would like to run pump 8 hours a day my pump is placed in basement under(beside pool) with maybe 20 feet of piping to drain. my pool being inside is never dirty so I have never changed sand almost never need to backwash.

A  Answered on 6/8/2017 by InyoPools Product Specialist Lennox H.

Hi, Dave. This Whisperflo EE 1/2 will be sufficient for circulating 5000 gallons of water. With 20 feet of heat this pump will produce a flow rate of 85 GPM, so you will have to make sure that your filter can handle that water flow. If it can not you may need to use a different pump like the Hayward Super Pump - SP2607X5.

?     Asked on 5/13/2017by Gerry McCombs

My Model 196232, Whisper Flo Pump is currently running on a 110/15 amp circuit. What can I do to change it to 220 if at all possible?

A  Answered on 5/13/2017 by InyoPools Product Specialist Hector F.

You would need to change your breaker, possibly line to the pump and set the pump to 230 volt if that setting is possible

?     Asked on 4/2/2017by Dave

is this a high head pressure pump? What are the specs on this pump,GPM etc?

A  Answered on 4/3/2017 by InyoPools Product Specialist Lennox H.

Hi, Dave. This is a High Flow pump. You can view the performance info via the Whisperflo Performance Curve Curve Key E.

?     Asked on 4/2/2017by Dave

is this a high head pressure pump

A  Answered on 4/3/2017 by InyoPools Product Specialist Lennox H.

Hi, Dave. the Whisperflo pumps are considered a High Flow pump.

?     Asked on 8/27/2016by Ali

I have a WFE-2 1/2 hp pump. I am wondering how much power does this pump consume ... it says its 1/2 hp so it should consume ~ 375 Watts? Can you please details its power consumption. Thanks

A  Answered on 9/16/2016 by InyoPools Product Specialist Joe S.

Ali, the Pentair Whisperflo 011511 draws Amps:11.2 if you are running 110 volts or 6.0-5.6 if you are running 220 volts.

?     Asked on 8/12/2016by Rob

Is a 2 hp pump a ok replacement for a 1.5 hp pump? Both are whisper flo. I was told that it would not work because of sand filter issues. I find that hard to believe.

A  Answered on 8/12/2016 by InyoPools Product Specialist Scott W.

I would need to know what model your sand filter is and the distance in feet from your pump to your main drain so that I can find your estimated flow rate and if your filter is able to handle the increased flow rate that you're wanting.

?     Asked on 8/17/2015by jbones

Hello. I have the pentair wfe-2 model and it was great but just stopped working. The line voltage is good and the capacitor tested good and the impeller is free spinning. Is there anything else that may have gone wrong or is the motor shot? If so can i purchase the motor separately ? Thank you

A  Answered on 8/20/2015 by InyoPools Product Specialist Lennox H.

Hi, If the motor is getting power it sounds like the motor is shot. The 1/2 HP Standard Motor - Full Rate (B846) will be the correct replacement. I woull also recommend getting the Pentair/Purex Whisperflo Tune Up Kit.

?     Asked on 2/5/2015by Inyo Visitor

Is pump model 011511 single or two speed?

A  Answered on 2/5/2015 by InyoPools Product Specialist Robert M.

Model 011511 is a single speed Whisperflo pump.

?     Asked on 2/16/2012by Guest

I just finished replacing the shaft seal on my booster pump. As soon as I turned the pump on water was leaking from the shaft seal. Is it defective or am I doing something wrong?

A  Answered on 2/16/2012 by InyoPools Product Specialist Patrick P.

Depending on the model, the installation of a booster pump shaft seal can be slightly different than a pool pump shaft seal. Some booster pump and pool pump shaft seals require that a silicone sealant be used on the outer areas of the metal seat of the shaft seal. The seal will need to be lightly hammered into the body of the pump. You can use a 1 inch PVC coupling or a piece of 1 1/4 inch PVC pipe and a rubber mallet. This procedure will apply to any pool pump or booster pump using a >PS-1000 style shaft seal.


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