Primary workhorse
Zoeller
M53
Cast-iron 1/3 HP submersible for everyday basement dewatering, with a vertical float that fits narrow pits.
$203.74
Independent Sump Pump Research
Best Sump Pumps Compared for 2026
Primary and backup sump pumps, side by side on the specs that actually keep a basement dry: flow at 10-ft head, switch type, housing, and warranty.
Sump Pump Scout is an independent research site. We compare submersible primary pumps, battery backups, and water-powered backups using manufacturer specs, manuals, and verified listings — so you can buy before the storm, not after it.
Flow at 10-ft head
Switch & housing checks
Warranty terms compared
Buyer guidance only. Sump pump specs are not professional plumbing advice — the right pump depends on your pit, inflow, and local conditions.
12
Pumps Compared
3
Pump Categories
8
Specs Per Pump
0
Sponsored Placements
Research Shortlist
Four ways to buy without wandering the whole catalog.
Start with the category that matches your basement. The full index is still below, but these are the cleanest entry points for common buyer paths.
High capacity
Wayne
CDU980E
3/4 HP and higher flow at 10-ft head for high water tables and heavy storm inflow.
$211.78
Battery backup
Basement Watchdog
BWSP
Keeps pumping through the power outage that arrives with the same storm as the water.
Budget pick
Superior Pump
91250
Affordable thermoplastic 1/4 HP pump for light dewatering and utility duty.
$62.49
Sump Pump Index
All Sump Pumps
Filter by budget and use case, then sort by the spec or ownership factor that matters for your setup.
I need an everyday primary pump
Submersible 1/3–1/2 HP pumps for routine dewatering, compared on flow and switch type.
Open pathI lose power during storms
Battery backups that keep pumping when the outage and the storm arrive together.
Open pathI have municipal water
Water-powered backups with no battery to maintain and no electricity required.
Open pathI am comparing two pumps
Put specs, price, and tradeoffs side by side before deciding.
Open pathShowing 12 of 12 compared pumps.
Primary Pumps
Wayne
CDU790
Pump Type
submersible
Horsepower
1/3 HP
Flow at 10-ft Head
3060GPH
Switch Type
vertical float
$137.08
Primary Pumps
Zoeller
M53
Pump Type
submersible
Horsepower
3/10 HP
Flow at 10-ft Head
2040GPH
Switch Type
vertical float
$203.74
Budget Picks
Aquastrong
ESU100PM
Pump Type
submersible
Horsepower
1 HP
Flow at 10-ft Head
—
Switch Type
n/a
$59.39
Primary Pumps
Wayne
CDU800
Pump Type
submersible
Horsepower
1/2 HP
Flow at 10-ft Head
3840GPH
Switch Type
vertical float
$158.78
High Capacity
Wayne
CDU980E
Pump Type
submersible
Horsepower
3/4 HP
Flow at 10-ft Head
4743GPH
Switch Type
vertical float
$211.78
Primary Pumps
Zoeller
M63
Pump Type
submersible
Horsepower
3/10 HP
Flow at 10-ft Head
2040GPH
Switch Type
vertical float
$311.24
Primary Pumps
Liberty Pumps
287
Pump Type
submersible
Horsepower
1/2 HP
Flow at 10-ft Head
3420GPH
Switch Type
vertical float
$299.89
Budget Picks
Superior Pump
91250
Pump Type
submersible
Horsepower
1/4 HP
Flow at 10-ft Head
1200GPH
Switch Type
n/a
$62.49
Battery Backup
Basement Watchdog
BWSP
Pump Type
battery-backup
Horsepower
—
Flow at 10-ft Head
1730GPH
Switch Type
vertical float
Battery Backup
Wayne
ESP25n
Pump Type
battery-backup
Horsepower
—
Flow at 10-ft Head
1500GPH
Switch Type
vertical float
$337.49
Water-Powered Backup
Liberty Pumps
SJ10
Pump Type
water-powered
Horsepower
—
Flow at 10-ft Head
—
Switch Type
n/a
$206.92
Water-Powered Backup
Basepump
RB750-EZ
Pump Type
water-powered
Horsepower
—
Flow at 10-ft Head
750GPH
Switch Type
n/a
How the Research Works
Spec-first comparisons, honest claims.
A sump pump only proves itself during the storm you didn't schedule. Sump Pump Scout focuses on published flow at head height, switch design, housing, documentation, warranty support, and plain-language buyer fit.
1. Read the spec sheet
Pull flow at stated head heights, switch type, housing material, and cord length from manufacturer documentation — not from the marketing headline.
2. Check the fine print
Warranty terms, pit size requirements, and discharge sizing live in manuals and warranty cards. If a brand won't document a spec clearly, the review says so.
3. Weigh the buying fit
Rank pumps by use case, budget, and ownership burden. A high-flow pump can still be the wrong buy for a narrow pit or a tight budget.
No paid rankings
Affiliate links do not buy placement. Comparisons lead with the specs, the documentation, and the tradeoffs.
No testing theater
We research; we don't claim lab testing we haven't done. Specs come from manufacturers and verified listings, and we say so.
Updated when data changes
New models, spec revisions, warranty changes, and better competing pumps can move a recommendation up or down.
Learn Before You Buy
Buying Guides
How to Choose a Sump Pump
Horsepower, flow at head height, switch type, and housing material — the four specs that decide whether a sump pump actually keeps your basement dry.
Primary vs. Backup Sump Pumps: Why You Need Both
A primary pump handles everyday groundwater. A backup pump handles the storm that knocks the power out. Here's why serious basement protection means running both.
Battery Backup Runtime: The Math That Matters
How long will a battery backup sump pump actually run in an outage? Battery capacity, pump draw, and duty cycle — plus the maintenance-free vs. wet cell tradeoff.
Sump Pump Switch Types: Tethered vs. Vertical vs. Electronic
The float switch — not the motor — is the #1 sump pump failure point. How tethered, vertical, and electronic switches differ, and why your pit size decides for you.
Water-Powered Backup Sump Pumps: How They Work and Who They're For
No battery, no motor, no electricity — municipal water pressure does the pumping. The requirements, the tradeoffs, and the homes that can (and can't) use one.
Sump Pump Installation and Maintenance Basics
Pit, check valve, discharge routing, the quarterly test, and the annual cleaning — the ownership routine that keeps a sump pump ready for the storm you didn't schedule.
Stay Independent
New Pump Comparisons, No Fluff
When we publish a new comparison, you'll get the specs, the tradeoffs, and nothing else. No affiliate newsletters. No sponsored roundups.
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