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Zoeller 1/3-HP 115 -Volt 43-GPM Cast Iron Submersible Sump Pump

Name: Zoeller 1/3-HP 115 -Volt 43-GPM Cast Iron Submersible Sump Pump
Brand: Zoeller
SKU: 1000495459
Price: 311.25 USD
Availability: InStock
Rating: 4.4 (34 reviews)

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Count on Zoeller® Pumps to deliver the very best solutions as the leading brand for pumps and pump accessories. Since 1939, this commitment to top quality offers you years of service and durability provided by a family owned company. These Premium sump pumps are designed with the very best materials and latest technology. Based on the 50 series sump pump, considered one of America’s most popular sump pumps, this product offers advanced switch technology allowing for longer switch life. This model is constructed of the same heat-dissipating cast iron with powder coated epoxy finish, providing maximum pumping performance under the most extreme conditions. With Zoeller’s cool run design, the hermetically-sealed, oil-filled motor and non-clogging vortex impeller add up to a long-lasting, troublefree product. The heavy-duty power cord also includes an LED lighted plug.

The M63 premium cast iron submersible sump pump with vertical float comes with an industry best 5-year limited warranty
100% Submersible
The M63 pump has an 1-1/2-in NPT discharge and is capable of passing 1/2-in spherical solids
Durable cast iron body that has a corrosion resistant powder coated epoxy finish
Includes green LED lighted plug showing power to the pump
Automatic model
Non-clogging vortex impeller
Float-operated, submersible, 2-pole mechanical switch integrating advanced switch technology
For residential sump pump applications

General
Application	Residential	Impeller Material	Cast iron
Material	Cast iron	Power Source	Electric
Package Contents	Sump pump	Collection Name	Premium 3/10 HP M63
Package Quantity	1	Maximum PSI	0
Switch Type	Vertical	Sub Type	Submersible sump pump
Type	Sump pumps

Dimensions
Amperage	9.7	Inlet Diameter	1/2-in
Cord Length (Feet)	10	Outlet Diameter	1-1/2-in

Features
Alarm Included	No	Water Flow (GPM)	43
Battery Backup	No	Gallons per Minute (Gallons)	43
Vertical Lift	19-1/4-ft	Outlet Connection	NPT
Check Valve	Yes	Submersible	Yes
Pump Horsepower	1/3-HP	Volts	115

Warranty
Warranty	5-year limited

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Safety Listing	cCSAus safety listing

Miscellaneous
UNSPSC	40151500

Check out the Best Selling Water Pumps on Lowes.com

Review

4.4 out of 5

34 Reviews

93% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The Zoeller M63 sump pump is a well-constructed, durable, and reliable product. Customers praise its all cast iron design, including the impeller, which is seen as a sign of quality. The pump is also noted to be quiet in operation, with an upgraded float switch that improves reliability. Users report the pump is easy to set up and effectively evacuates water. The 5-year warranty is highlighted as a key benefit, providing peace of mind. While a few customers experienced minor cosmetic damage upon delivery and one reported an early failure, the overall consensus is that the M63 is a premium sump pump worth the investment.

Customer review summary generated by AI, including incentivized reviews.

34 Customer Reviews

Sort By

Durable with great warranty

Would Recommend

Super durable cast iron seems like it will last a long time. Last pump was still going at 13 years but decided to swap it out for piece of mind. Highly recommend Zoeller pumps.

DeanMay 7, 2026
Verified Purchaser

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Response from Customer Care

Dean, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with any...

Customer CareMay 7, 2026

Zoeller

Sump Pump

Would Recommend

Easy to install

KristyMay 4, 2026
Verified Purchaser

Was this Review Helpful ?

Response from Customer Care

Kristy, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with a...

Customer CareMay 4, 2026

Zoeller

Worth the extra money.

Would Recommend

After going back and forth between the M53 and M63, I'm glad I spent the extra money on this product. The cast iron build from top to bottom along with the 5 year warranty gives me the piece of mind I was looking for with this pump. Especially after investing in finishing our basement. It's worth the little extra money for the upgrade and peace of mind.

BobbyApril 3, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Response from Customer Care

Bobby, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with an...

Customer CareApril 6, 2026

Zoeller

will need to purchase pvc fittings to install.

Would Recommend

picked up at store in about week from order date. Heavy duty cast iron, feels of good quality.

mickMarch 30, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Response from Customer Care

mick, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with any...

Customer CareMarch 30, 2026

Zoeller

Long life history

Would Recommend

Bought this as a replacement for existing septic pump based on reviews. Haven't installed yet.

pammMarch 8, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Response from Customer Care

pamm, thank you for taking the time to leave a review. We appreciate you and the 4 stars. Feel free to reach out to our Product Support Team with any...

Customer CareMarch 9, 2026

Zoeller

Excellent quality

Would Recommend

It has only been installed in the septic tank for a week but seems very well made and works as it should. Very happy with it. Much better quality than the one we replaced.

FldiyerMarch 5, 2026
Verified PurchaserIncentivized

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Response from Customer Care

Fldiyer, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with ...

Customer CareMarch 9, 2026

Zoeller

Its quite

Would Recommend

Easy hook up, came ready to install. This sump pump is quieter then expected.

JbakoMarch 2, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Response from Customer Care

Jbako, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team with an...

Customer CareMarch 3, 2026

Zoeller

Great upgrade, easy to install

Would Recommend

Replaced my old Zoeller with this model, upgraded from an M53 to this one. Was easy to install and replace my old one. Happy about the upgraded features including improved float switch which became stuck on my old model.

Zoellerman89February 26, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Response from Customer Care

Zoellerman89, thank you for taking the time to leave a review. We appreciate you and the 5 stars. Feel free to reach out to our Product Support Team ...

Customer CareFebruary 27, 2026

Zoeller

Reliable, Heavy-Duty Sump Pump with Easy Installat

Would Recommend

After doing extensive research on different Zoeller models, I decided to purchase the Zoeller M63 sump pump. I ordered it from Lowes.com to replace my old, non-functioning unit, and it arrived at the store on time without any problems. What stands out to me compared to other Zoeller 1/3 HP pumps is its all cast iron construction, including the impeller, along with the added benefit of an extended warranty. As a DIYer, I found the installation process simple and hassle-free.

MobyFebruary 16, 2026
Verified PurchaserIncentivized

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/d0747709-9fd0-5211-be8d-236bf4edcf3b

Was this Review Helpful ?

Response from Customer Care

Moby, thank you for taking the time to leave a review. We appreciate you and the 5 stars along with the feedback. Feel free to reach out to our Produ...

Customer CareFebruary 17, 2026

Zoeller

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COMPARE PRODUCTS

		Name	Current Item Zoeller1/3-HP 115 -Volt 43-GPM Cast Iron Submersible Sump Pump
		Ratings	34
		Pump Horsepower	1/3-HP
		Type	Sump pumps
		Submersible
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