Liberty vs Wayne sump pumps
One builds the pump that lasts longest in a difficult pit. The other moves the most water per dollar. The right answer depends on one measurement you can take tonight.
We earn a commission if you buy through our Amazon links, at no cost to you. We do not bench-test these products and we never take free product — how we pick · affiliate disclosure
Short answer: buy Wayne if you are ranking on published performance per dollar, and Liberty if your pit is narrow or you expect the pump to outlive its warranty by a decade. Wayne publishes what its pumps do at ten feet of lift and charges less; Liberty pours its housings as a single piece of cast iron, rates a model for a 10 inch basin that no Wayne will fit, and puts the switch on a quick-disconnect cord so the part that usually fails is a part rather than a pump.
These are the two brands most American homeowners end up choosing between once they have ruled out the own-brand pumps at the big-box stores. They are both genuine manufacturers with real cast-iron products, which makes the comparison unusually clean: there is no bad choice here, only a choice that fits your pit or does not.
Quick picks
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  Liberty Pumps 287A one-piece cast-iron pump with no seam between motor and volute, 37 feet of head, and a switch you can replace without touching the plumbing. | Liberty's case: a pump you install once | 8.6 | Check price on Amazon #ad we earn a commission · Amazon shows the current price |
| 2 |  Wayne CDU980E3,500 GPH published at ten feet of lift, in cast iron and stainless, with a top-suction intake and five years of warranty for less than Liberty charges for half the horsepower. | Wayne's case: the most measured water per dollar | 8.8 | Check price on Amazon #ad we earn a commission · Amazon shows the current price |
| 3 |  Liberty Pumps 257Liberty's 1/3 HP pump is rated to run in a 10 inch basin — an inch narrower than any Wayne sump pump in our registry will fit. | A narrow pit, where Wayne cannot go | 8.6 | Check price on Amazon #ad we earn a commission · Amazon shows the current price |
| 4 |  Wayne CDU7903,060 GPH at ten feet from a 1/3 HP epoxy-coated cast-iron pump, for less than either Liberty on this page. | The value pick across both brands | 8.5 | Check price on Amazon #ad we earn a commission · Amazon shows the current price |
Scores are ours and editorial, not lab measurements — see how we pick. Tap a row for the full write-up.
The one measurement that decides it
Take a tape measure to the inside diameter of your sump basin tonight, before you read any further into the specifications. Under eleven inches and the Wayne range is out: Wayne specifies an 11 inch minimum basin for its residential submersibles, and Liberty rates the 257 for a 10 inch pit. No amount of flow data overrides a pump that physically cannot swing its float.
The second measurement is lift: pit floor to the highest point of the discharge run. Wayne publishes flow figures at ten feet, which is close to what most houses impose, so you can check its pumps against your number directly. Liberty publishes a maximum head and a zero-lift flow, so with a Liberty you are sizing on the endpoints of the curve and trusting the middle. Both approaches work; only one lets you verify. What size sump pump do I need walks the arithmetic.
Brand against brand
| Liberty Pumps | Wayne Water Systems | |
|---|---|---|
| Based | Bergen, New York — one plant since 1965 | Harrison, Ohio — a Scott Fetzer (Berkshire Hathaway) company |
| Ownership | Family and employee owned; ESOP established 2015 | Subsidiary of a diversified holding company |
| Housing approach | One-piece cast iron, no motor-to-volute seam | Cast iron, or cast iron with stainless; assembled |
| Flow published at a stated lift | No, on the models in our registry | Yes — 3,060 GPH at 10 ft (CDU790), 3,500 GPH at 10 ft (CDU980E) |
| Best published maximum head | 37 ft (287) | Not published on the models in our registry |
| Narrowest pit supported | 10" (257) | 11" |
| Switch | Vertical magnetic float, quick-disconnect cord | Vertical float, integrated |
| Best solids handling | 3/4" (287) | Not published |
| Typical warranty | Three years | Three years, five on the CDU980E and the CDU790SS |
| Usual price position | Premium | Mid-market |
| Where you buy it | Mainly plumbing distribution | Distribution and consumer retail |
Read that table as two different companies answering two different questions. Wayne answers "how much water, how high, how much does it cost". Liberty answers "how long will this survive in a pit". Neither is dodging — they are optimizing for different failure modes, and which one matters depends entirely on your basement.
Liberty Pumps 287
A one-piece cast-iron pump with no seam between motor and volute, 37 feet of head, and a switch you can replace without touching the plumbing.
#ad we earn a commission · Amazon shows the current price
| Type | Submersible, one-piece "Uni-Body" cast iron |
|---|---|
| Horsepower | 1/2 HP |
| Electrical | 115 V, single phase |
| Discharge | 1-1/2" |
| Solids handling | 3/4" |
| Maximum head | 37 ft |
| Switch | Vertical magnetic float, quick-disconnect 10 ft cord |
| Warranty | Three years |
Liberty's argument is about the parts of a pump that fail rather than the numbers on the box. The housing is poured as a single piece of cast iron, motor and volute together, so there is no gasketed seam sitting in water for a decade. The float is a vertical magnetic switch with no arm to bind against a pit wall, and it is on a quick-disconnect cord — which means the component most likely to fail is a service part, not a reason to pull the pump out of the pit.
The company is unusual too, in a way that shows up in the product. Liberty Pumps has built pumps in Bergen, New York since 1965, sells into more than thirty countries from a single plant, and set up an employee stock ownership plan in 2015. That is not a reason to buy a pump, but it does explain why the parts network and the casting quality are what they are.
Where Liberty frustrates us is documentation. For the 287 there is no flow figure at ten feet, and the two distributor listings we could reach disagree about the zero-lift figure, so we record neither and rank the pump on what is consistent: 37 feet of maximum head, three-quarter-inch solids and the build. The full model notes are in the best 1/2 HP sump pumps.
What it gets right
- One-piece "Uni-Body" cast-iron housing — no bolted joint and no gasket between motor and volute
- 37 ft maximum head, the highest figure in our registry for a residential sump pump
- Vertical magnetic float on a quick-disconnect 10 ft cord: the switch, which is what usually fails, is a part rather than a pump replacement
- 3/4" solids handling, the best in our registry
- Three-year warranty, made by a company that has built pumps in one New York town since 1965
Where it falls short
- Liberty publishes no flow figure at ten feet of lift for this model, and two distributor listings disagree on the zero-lift number (63 vs 70 GPM)
- Typically the most expensive way to buy half a horsepower
- Sold mainly through plumbing distribution rather than consumer retail, so it is an order rather than a collection
- The premium is real and the published performance does not obviously justify it against the Wayne — you are paying for the casting and the switch
Specifications from Liberty 287 distributor listing, Liberty 287 (115 V) product page.
Wayne CDU980E
3,500 GPH published at ten feet of lift, in cast iron and stainless, with a top-suction intake and five years of warranty for less than Liberty charges for half the horsepower.
#ad we earn a commission · Amazon shows the current price
| Type | Submersible, cast iron and stainless steel |
|---|---|
| Horsepower | 3/4 HP |
| Electrical | 120 V, 10 A |
| Discharge | 1-1/2" NPT |
| Switch | Vertical float, on at 9", off at 4" |
| Intake | Top suction, to keep debris out of the impeller |
| Seals | Carbon/ceramic shaft seal, ball bearings in a sealed oil bath |
| Flow, by lift | 4,600 GPH at 0 ft · 3,500 GPH at 10 ft |
| Warranty | Five years, limited |
Wayne's argument is simpler: here is what the pump does at the height your basement imposes, and here is a price. The CDU980E publishes 3,500 GPH at ten feet of lift, which is more than any Liberty residential pump in our registry documents at any stated lift, and it does it in cast iron and stainless with a five-year warranty. If you are comparing specification sheets rather than philosophies, Wayne wins on the sheet.
The top-suction intake is the feature we would actually pay for. Most submersibles draw through a screen an inch or two above whatever has settled on the pit floor; Wayne moves the intake up the body so the pump pulls cleaner water. In a pit fed by drain tile — which silts up, always — that is a longevity feature rather than a brochure one.
Wayne Water Systems operates from Harrison, Ohio as a Scott Fetzer company, which puts it inside Berkshire Hathaway. In practice that shows up as broad distribution and consistent pricing rather than as anything you can see in the pump. What it does not fix is the specification chaos: three retailers quoting three headline flow figures for one part number is not a good look, and it is why we size on the conservative pair.
What it gets right
- 3,500 GPH at ten feet of lift, published with the lift attached — the thing Liberty does not do
- Cast iron and stainless steel, and a top-suction intake that keeps settled silt out of the impeller
- Five-year limited warranty, two years longer than Liberty's on the 287
- Published switch points: on at 9", off at 4"
- Widely distributed and usually noticeably cheaper than the Liberty
Where it falls short
- Three distributors publish three different headline flow figures for this pump — 4,600, 5,490 and 5,670 GPH — which is careless even by this category's standards
- Needs an 11" minimum pit, where Liberty has models rated for 10"
- The 8 ft cord is short, and the switch is not on a quick-disconnect the way Liberty's is
- 10 A at 120 V, enough current to want its own circuit
- The housing is assembled rather than cast as one piece
Specifications from Wayne CDU980E specification listing, Wayne 58321 CDU980E distributor listing, Wayne CDU980E listing stating 4,600 GPH max and 3,500 GPH at 10 ft (stock verified 2026-10-29), Wayne CDU980E listing stating 120 V / 10 A, 11 in minimum pit, switch on 9 in / off 4 in, five-year warranty.
Liberty Pumps 257
Liberty's 1/3 HP pump is rated to run in a 10 inch basin — an inch narrower than any Wayne sump pump in our registry will fit.
#ad we earn a commission · Amazon shows the current price
| Type | Submersible, Class 25 cast iron |
|---|---|
| Horsepower | 1/3 HP |
| Electrical | 115 V, 5.2 A |
| Discharge | 1-1/2" NPT vertical female |
| Impeller | Thermoplastic vortex |
| Solids handling | 3/8" |
| Minimum pit | 10 in diameter |
| Maximum head | 23 ft (rated head 5 ft) |
| Flow, by lift | 2,640 GPH at 0 ft |
| Warranty | Three years |
This is where the brand comparison stops being a matter of taste. Wayne's residential submersibles specify an 11 inch minimum basin. Liberty rates the 257 for a 10 inch pit. If a tape measure across your basin reads ten and a half inches — and in older houses and retrofitted pits it often does — the decision is already made, and no amount of published flow changes it.
The rest follows Liberty's usual pattern: one-piece cast iron, a vertical magnetic float with no arm to foul, a quick-disconnect cord, and a specification sheet that gives you a zero-lift flow and a maximum head and nothing in between. At 5.2 amps it draws about half what the big Wayne does, which matters if the sump outlet is sharing a circuit it should not be sharing.
What it gets right
- Rated for a 10 in diameter pit, which decides the purchase outright in older houses and retrofit basins
- One-piece Class 25 cast-iron housing, the same approach as the 287
- 23 ft maximum head and 5.2 A at 115 V, roughly half the current the Wayne pumps draw
- Vertical magnetic float, 10 ft quick-disconnect cord, three-year warranty
Where it falls short
- 2,640 GPH at zero lift and nothing published at ten feet, so you are sizing on endpoints
- The impeller is thermoplastic vortex inside an otherwise cast-iron pump
- Usually dearer than the Wayne CDU790 it competes with, which does publish a ten-foot figure
- Distributor sheets disagree on solids handling (3/8 in on the one we cite, 1/2 in elsewhere); assume the smaller
Specifications from Liberty 257 specification listing, Liberty 250-series distributor spec page.
Wayne CDU790
3,060 GPH at ten feet from a 1/3 HP epoxy-coated cast-iron pump, for less than either Liberty on this page.
#ad we earn a commission · Amazon shows the current price
| Type | Submersible, epoxy-coated cast iron |
|---|---|
| Horsepower | 1/3 HP |
| Electrical | 120 V, 9.5 A, PSC oil-filled motor |
| Discharge | 1-1/2" NPT |
| Cord | 8 ft |
| Switch | Vertical float |
| Flow, by lift | 4,600 GPH at 0 ft · 3,060 GPH at 10 ft |
| Warranty | Three years (the CDU790SS stainless variant is five) |
If the question is which single pump across both brands gives the most measured performance for the money, this is the answer and it is not close. 3,060 GPH at ten feet of lift is a published figure at a stated height from a pump that costs less than anything Liberty sells in the same class, in a cast-iron body with the top-suction intake carried down from the larger model.
What you give up is the two things Liberty is actually selling: a one-piece casting and a switch you can replace on its own. Over ten years in a hard-working pit those are worth something real. Over five years in a pit that cycles twice a day, they are worth less than the price difference. That is the whole brand decision in two sentences.
What it gets right
- 3,060 GPH published at ten feet of lift, from a 1/3 HP pump
- Epoxy-coated cast iron with the same top-suction intake as the CDU980E
- 9.5 A at 120 V, and the stainless CDU790SS variant carries five years of warranty
- The cheapest pump on this page by a clear margin
Where it falls short
- Same 11" minimum pit, so it does not answer a narrow-basin problem either
- 8 ft cord, the shortest here
- Three-year warranty on the standard version
- An epoxy coating is a coating: chip it on a concrete pit edge during installation and you have exposed iron
Specifications from Wayne CDU790 specification listing, Wayne CDU790 distributor listing.
Where Liberty is the right answer
- A pit under eleven inches across. The 257 is rated for 10 in. Nothing in Wayne's residential range is.
- A pit that silts, floods and gets abused. A one-piece casting has no gasket to degrade and no seam to leak, and 3/4 in solids handling on the 287 is the best figure in our registry.
- A lift above about fifteen feet. 37 ft of maximum head on the 287 beats anything Wayne documents, and it does it from half a horsepower.
- A switch you plan to replace rather than a pump. The quick-disconnect cord turns the commonest failure in a sump system into a twenty-minute job.
Where Wayne is the right answer
- You want to size the pump against a measured lift. Only Wayne publishes a figure at ten feet, and that is the single most useful number in this category.
- Volume is the problem. The CDU980E's 3,500 GPH at ten feet is the highest measured figure in our registry — see the best 3/4 HP sump pumps.
- The pit silts up. Top suction draws from above the floor of the pit, which Liberty's models do not.
- Budget is doing real work. The CDU790 publishes a ten-foot figure and costs less than any Liberty in the comparable class.
- You want the longer warranty. Five years on the CDU980E against Liberty's three.
What neither brand tells you
Both companies publish zero-lift flow figures prominently and both are quieter about the curve in between, which is the industry's habit rather than a fault of either. More importantly, neither brand's pump is the thing most likely to flood your basement. The pump is rarely the failure. The failures, roughly in order, are a power cut, a stuck or fouled float switch, a check valve that lets the discharge column fall back into the pit, and a discharge line that froze or clogged outside.
That is why the honest upgrade path for most people is not a better primary pump. It is a primary pump that is merely adequate, plus a backup that works when the power does not, plus an alarm that tells you before the carpet does. If you are about to spend the difference between a Liberty and a Wayne on brand, spend it on a battery backup instead and buy whichever primary fits your pit.
Questions people ask
Is Liberty or Wayne the better sump pump brand?
Wayne if you are buying on published performance per dollar: it is the only one of the two that states what its pumps move at ten feet of lift, and it costs less. Liberty if your pit is narrower than eleven inches, if your discharge climbs a long way, or if you want a one-piece cast-iron housing and a float switch you can replace without pulling the pump.
Does Liberty make a 3/4 HP sump pump?
Not in the residential sump range we track. Liberty's 287 is a 1/2 HP pump with 37 feet of maximum head, which out-reaches every 3/4 HP pump in our registry. If you need more volume rather than more height, the 3/4 HP options are covered in the best 3/4 HP sump pumps.
Which brand lasts longer?
We have not run either brand to failure and will not claim a lifespan we have not measured. What is documented: Liberty casts the motor housing and volute as a single piece, removing a gasketed seam from a machine that sits in water, and puts the switch on a quick-disconnect cord. Wayne gives a five-year warranty on the CDU980E against Liberty's three on the 287. Those are the facts; the inference is yours.
Is Liberty worth the extra money?
In a narrow pit, yes — nothing else fits. In a difficult pit that silts and cycles hard, probably, because the casting and the replaceable switch are aimed exactly at that. In a standard 18 x 22 inch basin that runs a few times a week, the Wayne does the same job for less, and the difference is better spent on a backup system.
Where are Liberty and Wayne pumps made?
Liberty Pumps manufactures in Bergen, New York, where it has been since 1965, and the company established an employee stock ownership plan in 2015. Wayne Water Systems operates from Harrison, Ohio as a Scott Fetzer company, which makes it part of Berkshire Hathaway.
Can I replace a Wayne pump with a Liberty without replumbing?
Usually yes. Both brands use a 1-1/2 in NPT discharge on the residential models in our registry, so the union and the check valve carry over. Check the basin diameter and the cord reach before you order, and replace the check valve while the pipe is open anyway.
Sources
- Liberty Pumps company history: founded 1965, Bergen NY, ESOP established 2015, 350,000 sq ft plant, 30+ countries
- Wayne Water Systems described as a Harrison, Ohio division of the Scott Fetzer Company / Berkshire Hathaway
- Berkshire Hathaway 8-K exhibit listing Wayne Water Systems as a Scott Fetzer company
- Liberty 287 distributor listing: one-piece cast iron, 37 ft maximum head
- Liberty 250-series (257) specification page: 10 in minimum pit, 23 ft maximum head, 5.2 A
- Wayne CDU980E listing: 4,600 GPH max, 3,500 GPH at 10 ft, 11 in minimum basin (checked 2026-10-29)
- Wayne CDU980E listing: 120 V / 10 A, switch on 9" / off 4", 8 ft cord, five-year warranty
- Wayne CDU790 distributor listing and specification
Read next
Liberty Pumps sump pumps
Liberty's argument is that the switch is what fails, so that is where the engineering should go. It is a good argument.
Wayne sump pumps
The brand to buy when the limiting factor is how fast your pit refills. More flow for the money than anyone else here, in cast iron.
Liberty vs Zoeller
Two premium answers to the same question. The pit usually decides this one before the price does.
Wayne vs Zoeller
Flow per dollar against the longest service record in the category. Both are right answers to different questions.
The best 3/4 HP sump pumps
Three-quarters of a horsepower is a smaller class than the search results suggest, and the extra power buys volume rather than height. Here is what is real, and what it does.