Zoeller M53 Mighty-mate Submersible Sump Pump 1/3 HP
- Horsepower: 0.33 hp
- Maximum Lifting Height: 19.2 feet
- Power Source: Corded Electric
- Material Type: Plastic
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable mid-size automatic sump pump with a debris resistant impeller, though buyers wanting maximum output should compare its 1/3 HP rating against a 1/2 HP pump before choosing.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B000H5PYR2Model: M53 Mighty-MateCategory: Sump Pumps
Overview
The Zoeller M53 Mighty-mate is a 1/3 HP submersible sump pump with a float activated switch, a non-clogging vortex impeller, stainless steel hardware, and a cast iron switch case, motor and pump housing on a plastic base.
It sits below the Wayne CDU800's 1/2 HP rating here, positioning it for pits that need reliable automatic pumping rather than maximum throughput. The vortex impeller design is meant to pass debris through without jamming, which matters most in a sump pit that collects grit and small solids along with water.
- 1/3 HP motor with float activated automatic operation
- Non-clogging vortex impeller design
- Cast iron switch case, motor and pump housing
- Stainless steel hardware, plastic base
Who it's for
Suited to a standard residential sump pit that needs dependable, automatic operation rather than the highest possible flow rate. A larger capacity pump would suit a pit that floods harder or faster.
Pros and cons
- Non-clogging vortex impeller handles debris
- Cast iron motor and pump housing for durability
- Stainless steel hardware resists corrosion
- Automatic float activated operation
- Lower 1/3 HP rating than larger sump pumps
Performance notes
The float activated switch turns the pump on automatically as water rises in the pit, and the vortex impeller is designed to pass small debris through the pump rather than clogging on it, a common failure point in basic sump pumps. Stainless steel hardware and a cast iron switch case, motor and pump housing are meant to resist the corrosion that a sump pit's constant moisture causes over time.
Where it stands among sump pumps
- #1 most-searched brand and model of the 18 sump pumps lines we track (by search demand, not sales).
From the specs of the 38 sump pumps we list; not a test result.
Specifications
| Brand | Zoeller |
|---|---|
| Model | M53 Mighty-Mate |
| Dimensions & fit | |
| Maximum Lifting Height | 19.2 feetlower than 63% of 20 sump pumps |
| Item Weight | 21 pounds |
| Item Dimensions L X W X H | 10 × 8 × 10.2 inches |
| Power & efficiency | |
| Horsepower | 0.33 hp |
| Power Source | Corded Electric |
| Voltage | 115 volts |
| Construction & materials | |
| Material Type | Plastic |
| Color | Green |
| Included components | |
| Unit Count | 1 |
| Included Components | Product Only |
| Other details | |
| Number Of Items | 1 |
| Product Style | Sump Pump |
| Item Type Name | Plumbing Replacement Parts |
| Specific Uses For Product | Inside |
| Item Highlight | LED Power Plug & 9’ Cord - Vortex Impeller - Stainless Steel Hardware - Float Operated - Submersible Sump Pump |
Closest rivals on specs
Little Giant 506158 Cast Iron Submersible Sump Pump 1/3 HP- Item Weight 21 vs 17 pounds (+24%)
Little Giant 506065 Drainosaur Jr Sump Pump Basin System- Item Weight 21 vs 13.45 pounds (+56%)
Frequently asked questions
How powerful is the Zoeller M53 Mighty-mate?
It has a 1/3 HP motor with a float activated switch for automatic operation.
What is the impeller design on the Zoeller M53?
A non-clogging vortex impeller, meant to pass debris through rather than jamming.
What materials make up the Zoeller M53 housing?
A cast iron switch case, motor and pump housing, stainless steel hardware, and a plastic base.