What is Service Factor?
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Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.
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Why do I need to purchase a new shaft seal?
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We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.
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Why should I purchase a Tune Up Kit?
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A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.
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How do we remove old pump. Removed all 4 bolts but pump won't disconnect from pool housing.
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Our Video and Step by Step Guide on How to Replace a Pool Motor goes over this pretty well. Take a look at this video and let us know if you still need help.
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will this fit a challenger pump
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Hi, The A.O. Smith 3/4 HP, 56Y Frame, Up-Rate Motor (B852, B2852) will fit a Pentair Challenger Pump. You would also need to confirm that this motor is ok to use with your current Impeller.
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My old pool label reads A.O.Smith CAT serial CA04-08 Part 7-186236-20 Type CX FR:P56Y, HP---, SF---, PH 1, HZ 60, RPM 3450, Volts 230/115, AMPS 5.4/10.8, Time: CONT, ENCL: DP, FORM: KJM, CODE: N, AMB: 40. It seems like this pump will replace my old one but I wanted to make sure before I purchased this.
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Yes that is a correct motor replacement for your current model.
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How many capacitors does the AO Smith 3\4 hp B852, B2852 have? Know about the run capacitor on top, but is there a start capacitor in the back of the motor under the electrical cover also? Got a humming, non starting pump motor to repair, any help appreciated. Thanks.
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Hi Bob, The B852 motor only has a run capacitor and no start switch. The only thing could be the motor windings.
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What motor do I need to replace an AO Smith 7-177449-03 3/4 HP. It goes on a Whisper Flo WFE-3 pump.
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Hello Carl, it looks like from what your numbers match to is a 3/4 HP Motor EE - Full Rate (B661, B2661) and pump seal Tune Up Kit Pentair/Purex Whisperflo - GOKIT32. Unless you have saltwater then Saltwater Tune Up Kit Pentair/Purex Whisperflo - GOKIT32SALT.
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Do you have anything for corrosion prevention for the motor. Living on the Gulf of Mexico, the salt even corrodes glass!
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Unfortunately, there is nothing we carry to prevent corrosion on the motor. I would recommend a Protective Pool Motor Cover - R221016 to keep the elements off of your motor as much as possible as well as not allowing runoff rainwater from the roof to fall directly on it.
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Need a replacement motor for centurion switchless motor, this motor is old and I only have some info the rest has disappeared, pool and spa duty, hp3/4, type cs, time cont, code j, encl dp, sp 1.25, amps sf5.4/10.8, serial bu3-21, insul class b, hz 60.ph1.
Can you please help me? I think this is the replacement but want to be sure.
Thanks
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Hi, Penny. Based on the info provided this B852 motor can be used as a replacement. However, to be sure please send photos of the motor label and pump to upload@inyopools.com.
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Will this motor replace a Pac-Fab Challenger 3/4 HP 355338?
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Hi, Paige. I was able to confirm that this motor will replace the following Challenger Motors, 35-5384 or 355019S. The motor will have a Century p/n that we can use to locate the correct motor.
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Can you tell me the proper run capacitor for this motor...the label on the one in it now is unreadable. Thanks.
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Hi, Patrick. This B852 motor uses the 25 MFD, 370 Volt Run Capacitor.
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What is the capacitor I need for a AO smith B2852
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Hi. This B852 motor uses the 30MFD 370VAC Run Capacitor - 628318-308.
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Is this the correct replacement motor for a whisperflo model WF-23. Do you recommend replacing the shaft seal if I replace the motor even though the current seal is less than a month old? Thanks! Bill
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Hi, Bill. This B852 is the correct replacement motor for the WF-23 pump. The seals are all available in the Whisperflo Tune Up Kit - GOKIT32 or GOKIT32SALT.
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I need a replacement motor for a 6 year old Spa-Rite 3/4 HP Super Max motor Part # 355371S what is the best quality motor to get that is easily replaced
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what is the correct replacement motor for a Pentair WF 23 3/4 hp, 1.27 service factor. The part number on the motor is 75232. Another number on the motor looks like 86236-20.
I have a WF-23 motor . It over heated from bad bearing. Half the bolts on one side are brittle and broke with minimal torque. I wish to purchase a replacement motor. I saw th AO smith .75 motor as the alternative to the pentair. What other parts would I need with it to replace the motor and assembly like the impeller etc.
Thanks Bill
Hello, the motor you need is the B846. Along with this, you will need either the GOKIT32 or the GOKIT32SALT.
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Which motor do I need to replace my old sta rite dyna glas 3/4 hp motor?
Hello - the 3/4 HP Square Flange 48Y Full Rate EE Motor - QC1072 is the replacement motor for your K48K2PA105C1.
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This motor appears to be an appropriate replacement for the one on my Jacuzzi pump that services the waterfall feature of my pool. The only difference is that mine does not have the small housing on the top of the motor. I assume this is a capacitor? Will I need a special tool to separate the pump from the motor?
Yes, the hump on the motor is the capacitor housing, going by your pictures; it should not interfere with your install. There is no need for extra tools, following the instruction in this guide and you shouldn't have a problem: How To Replace the Motor on Your Pool Pump.
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Are these normally hot to the touch? Just installed mine an hour ago and it feels very hot.
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Yes, these motors run at approximately 140 degrees. If it exceeds normal operating temperature the thermal overload load will cause it to shut down.
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Ok great! thank you for the quick reply, I really appreciate that
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My friend has a 2008 Pentair whisperflow 3/4 Horsepower pump wfe-3 which is having noises from the motor. From the specs, this ao smith motor seems to be the correct replacement alternative to the pentair. Could you please confirm? Also, which gasket kit would be appropriate. Thanks for your advice
Hi, David. You will actually need the B2661 motor along with the Whisperflo Tune Up Kit - GOKIT32 or GOKIT32SALT.
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need a replacement for 3/4 HP pool pump motor MOD#: C48AB44A01. Which one do you sell that is a suitable replacement?
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Hi. I was not able to find a suitable replacement in our database using the MOD# provided. Please provide a picture of the motor label and or the pump it is operating.
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I’m not positive on what motor I need as I keep finding small differences in each one I look at. I hope you can help because it’s far too loud right now to relax at the pool. I have this picture (best I could do as the label is so worn.
Can you tell me which replacement motor I need? Do I just remove the old and bolts on the new?
Hi, Steve. The correct replacement motor is P/N B227SE. Check out our How To Replace the Motor on Your Pool Pump for instructions.
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We have a an automatic pool cover since 2004. Seems the motor went out to close and open the cover. The motor is
AC Gear Motor
EC-0001
3/4 HP
36 RPM
909 IN. LBS.
115 VOLTS
7.0 AMPS
Please tell me which motor will replace this motor. With so many motors to choose from and to find the exact specs has proven to be a difficult task. Please advise.
Hi, Madeline. Unfortunately, we do not have a replacement for that motor.
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Could you please tell me if the B852 is the same thing as the B2852. Also, could you tell me if you have the shaft seal kit to. The only difference I see is the Code J and the serial number.
Hi, Lynn. Yes, the B852 and B2852 is the same. You will need the Tune Up Kit Sta-Rite Max-E-Pro (Pre February 2015) - GOKIT79 or the Pump Shaft Seal 3/4" - 37400-0028S.
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do i need a start capacitor to run this motor for pool
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Hi. This motor only has a Run Capacitor - 628318-307, no Start Capacitor.
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so i can put this motor on my pump and it will run the pump with out capacitor with no problem
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Will this motor replace the model in the picture? The bearings went out in my motor. Do I need any additional parts if so?
Hi, Gabriel. The B2661 is the correct replacement motor. You will also need the Whisperflo Tune Up Kit - GOKIT32 or GOKIT32SALT.
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can you tell me if this is the exact pump I need (replacement). This pump runs my Polaris 360 robot. I also need the red joints(see pic) as I dont know what they are called.
I'm looking for that square plate (I believe it's called a seal plate?) that sits in the square flange, that the PS200 shaft seal fits in.
My Century B852 pump is for a Polaris Pool sweep, so it's not vacuum, it's pressure (if that makes a difference)
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Hi Todd, would it be possible for you to send us a few photos? Simply click the reply link below to upload your photos. This would allow us to suggest the proper replacement part.
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Is this the right replacement for my Pentair wisperflo? Or do I need to buy the Pentair replacement(almond colored 35008S)? Your thoughts please and thanks!??
Hi Matt, Yes this is the correct replacement motor the motor included in your photo. You will also need a Pentair Whisperflo Seal Kit when you replace your motor. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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Will this replacement motor work for my pool pump shown in the pics?
And also could you recommend the correct tune-up kit so I can replace the seals?
Hi Steve, yes, this is the correct replacement motor for the motor included in your photo. You will also need a Pentair Challenger Seal Kit when you replace your motor. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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Please the the attached photos or my Polaris pump motor. Is this motor the correct replacement
Vince, The replacement motor would be the B625, not the B852. I would also recommend replacing the shaft seal.
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I have a Sta-Rite 3/4 pump that is not working. I want a similar replacement. Is this the right replacement (see pics below)?
Also I assume I just need the repair kit as well for installation. Will that be all the parts I need for replacement?
Is this the correct motor for these photos? The label says Jandy and the motor says Centurion.
Yes this is the proper replacement motor for the motor in your photos and you will also need this Jandy MHPU Shaft Seal when you replace your motor.
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Is there any difference between a pool pump motor: B2852 and a replacement B852? Both are 56Y 3/4 horse.
Thanks
Hi Dave, there is not a difference between the B2852 and the B852. These are just alternate part numbers as many pool products have multiple part numbers.
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I have a Jandy (7-193984-25) 3/4 HP, 56Y, SF-1.3 producing .98 Total HP. I read here that the SF is split into =1.27 & <1.30. Will the SF be an issue for me?
Also, is there anything else required for installation?
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Hi Jim, being that your compatible single speed replacement motor is the B852 for your motor part number 193984, no the service factor will not affect you. Also, replacing the seals and gaskets is recommended however in order to cross-reference the correct ones we will need to know the front pump housing wet end model name or number to confirm that for you.
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Is this the correct replacement for this current motor? It runs a waterfall feature and a bubbler on a ledge in the pool.
Could you send us a few photos of your pump? Please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation.
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Can this model directly replace what I currently have on a fountain?
Hi, the correct single speed replacement motor for your motor catalog number B134 is the SK1102. When replacing a pool motor we do suggest a Seal Kit. Could you send us a few photos of your pump so we can suggest the proper seal kit? If so then please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation for your seal kit.
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Can this model directly replace what I currently have on a fountain?
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Hello, could you send us a few photos of your pump and motor? Please take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation.
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I plan to replace my pool pump motor. Will this motor be a good replacement for the one I have now?
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Hello, could you send us a few photos of your pump and motor? Please take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation.
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Hello. I'm looking to buy this replacement motor for my Pentair SuperFlo pump, P/N 348023. I'm replacing motor #196232 (photos attached). Can you please tell me what other seal or gasket kits I need with this? Thanks.
Yes, this is the correct replacement motor for the motor included in your photo. You will also need a Pentair SuperFlo seal kit when you replace your motor. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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I plan to replace my pool pump / motor. Will this motor be a good replacement for the one I have now.
will these work as replacement ? Whisperflo Pump 3/4 HP - WF-23 & Century 3/4 HP Square Flange 56Y Up Rate Motor - B2852
I need to replace my Magnetek/Century 3/4 hp motor. Photo of label is attached. Is this listing the correct replacement?
Hi Ted, the correct replacement motor for your motor included in the picture is the B625. When replacing a pool motor we do suggest a Seal Kit. Could you send us a few photos of your pump so we can suggest the proper seal kit? If so then please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos or quickest provide them using our live online chat feature. Once we get those photos we can make the proper recommendation for your seal kit.
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I have an AO Smith 3/4 hp pool motor that I need to replace. I purchased and Endless Pool in about 2003 and need to replace it. The motor I have is a 3/4 hp Century Centurian and the part number is 7-18623600-26. I am considering a Century 3/4 HP Square Flange 56Y Up Rate Motor - B2852. I want to be sure that the flange is compatible with my pump. Can you verify this for me? I've added a photo of the motor and the label. Thanks, Gary
The correct motor replacement for your 7-186236-20 is the Century 3/4 HP Square Flange 56Y Up Rate Motor - B2852. Then you can select the correct gasket kit for your pump from this Pentair Pump Parts Page.
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I need a 1HP Pool pump. What is the difference between a Century B2852 model and B2853? And are these energy efficient? Thank you.
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The B2852 is a 3/4 HP uprated motor and the B2853 is a 1Hp uprated motor. These are not considered energy-efficient motors. An energy-efficient option would be part number ECM16SQU.
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My square flange on my motor is corroded. Can I just get a replacement flange?
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Hello Dave. It is possible to replace the Service End (square flange) on pool pump motors. The Service End is specific to the manufacturer/model of the motor. Please provide this information and a recommendation can be made. Attached please find 2 different exploded parts diagrams for 2 different motor models for further reference. Century 56Y Up Rate Single Speed Series Century / A.O Smith USQ Series
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I need to replace the motor for my whisperflo pump (motor has become very loud with frequent pitch changes but is powering the pump). Looking for an affordable motor and the parts I’d need to make sure the motor change is successful. I’d appreciate reference to part numbers I’d need. Thanks.
Hi Justin. The Title 20 regulations in California require you to change your old B2661 motor to a dual-speed motor like this 115 volt B2981, this 220 volt B2980, or this variable-speed ECM16SQU. Adding a Tune Up Kit Pentair/Purex Whisperflo - GOKIT32 will ensure that your motor replacement is very successful.
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Is this the replacement motor for a pentair WFE-3 / 011512? Thank you for your help.
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Hello Dennis. The Pentair Whisperflo model WFE-3 was manufactured with a Full Rate 3/4 HP, 1.65 SF, 1.24 THP Single Speed Motor. The Century Motors Full Rate 3/4 HP, 1.65 SF, 1.24 THP Single Speed Motor model B2847V1 is a compatible replacement. Century 3/4 HP Square Flange 56Y Full Rate Motor - B2847V1 It is recommended that the motor shaft seal, seal plate gasket, and diffuser o-ring be replaced concurrent with the new motor. The GOKIT32 contains the necessary parts to complete this project. Tune Up Kit Pentair/Purex Whisperflo - GOKIT32
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See pics. I'm looking for a .5hp motor. All I find at your site is .75hp and above. Special order?
Thanks.
Hello Ray. The Century Motors 1/2 HP Full Rate Motor model B2846 matches the specifications of the motor model 0-193984-25 as identified in the photos provided. Century 1/2 HP Square Flange 56Y Full Rate Motor - B2846 It is recommended that the motor shaft seal Jandy Pump Shaft Seal, Backplate o-ring Backplate O-Ring, and Diffuser o-ring Diffuser/Impeller Hardware be replaced concurrent with the new motor. Attached please find a Jandy PlusHP PHPF exploded parts diagram for reference. Jandy PlusHP
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Looking for a Replacement .75 HP 230V motor. The Pump is a Jandy Pro Model PHPM.75
Is this motor a match for my pool pump? Thank you for your assistance!
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Hello Brian. The Century 3/4 HP Square Flange 56Y Up Rate Motor - B2852 is a compatible motor replacement for the Jandy PlusHP PHPM & PHPF Series Pump (2006-Current). It is recommended that the Jandy Pump Shaft Seal and Backplate O-Ring be replaced concurrent with the new motor installation. Please reference the Jandy PlusHP Serial Number as it defines the shaft seal selection. A serial number before P08FF0001 requires the shaft seal Pump Shaft Seal 3/4"
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how do i order a seal along with my pump motor?
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Hi Allen, here is a guide for "Finding the Tune-Up Kit for Your Pool Pump" that should assist yu with locating that seal kit.
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I have pentair o-177449-03. Is this the correct replacement?
Hello Eric, the correct replacement single speed motor for your motor part number 177449 is the B661. We also recommend replacing the seals and gaskets when replacing a pool pump motor. For your Pentair Whisperflo you can use the GOKIT32 for a standard chlorine swimming pool or the GOKIT32SALT for a saltwater swimming pool.
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Is this motor a suitable replacement for a Sta-Rite 3/4 HP P6E6D-205L that I use for a water feature and if so is it available now.
Thanks
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Hello Barbara, This QC1072 is the correct single speed replacement motor for your original pump model P6E6D-205L. However for California you are required to use an energy efficient motor per code. In your case I recommend the motor model ECM16SQU. We also recommend replacing the seals and gaskets when replacing a pool pump motor. The Seal/Tune Up Kit is P/N GOKIT79 is for yours. Please click here to view our guide for changing a motor for a pump similar to yours that should also assist. I have also emailed you an estimate that you can convert to an order if you would like. Items are currently in stock and ready to ship.
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I have a 3/4 HP, 115 volt pump motor a Century B2852 that I need a salt water shaft seal kit for. Do you have it and what is the part #.
Thanks,
Allen
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Hello Allen. A shaft seal is specific to the manufacturer/model of the pump and not the motor. Please provide the pump's manufacturer/model information and a recommendation can be made.
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I have a Century B2852, 3/4HP motor and the pool pump is a Pentair superflo. What salt water shaft seal will work on this unit?
Please give me a part # and cost, so I can order.
Thanks,
Allen Townsend
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Hello Allen. The Pump Shaft Seal, Heavy Duty PS-200-style for Saltwater Pools - PS-3867 is compatible with the Pentair SuperFlo and the Century B2852. The Heavy Duty Shaft Seal PS-3867 is included in the Pentair SuperFlo Saltwater Seal Kit - Model GOKIT78SALT should you wish to replace additional seals and gaskets. Attached please find the Pentair SuperFlo Pump exploded parts diagram for reference.
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I've got a century centurion B2852 in California that I need to replace. Please set me up with a comparable unit and any seals or gaskets I will need for the install. Thank you.
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Hi Tony, the EVQ165 motor will be a perfect Title 20-compliant replacement for your old B2852 motor. The seals kits are specific to the pump and not the motor so send us pictures of your pump and any labels on it to upload@inyopools.com so we are sure to recommend exactly what you need for a leak-free installation.
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