Wayne CDU980E Review: 3/4 HP, 5,245 GPH Submersible Sump Pump — Specs, Pros & Cons

Last updated: September 29, 2026  ·  Reviewed by the Sump Pump Central editorial team.

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The Wayne CDU980E is a heavy-duty cast iron and stainless steel sump pump, backed by a 5-year warranty and 3/4 HP of pumping muscle. Updated September 2026: it’s still our top-rated 3/4 HP submersible pump. But is the premium price justified? Wayne rates the CDU980E at 5,245 gallons per hour at 0 ft (4,743 GPH at 10 ft) — roughly double a typical 1/3 HP budget pump — but it costs a little over twice as much. The CDU980E earns a 4.6/5 editorial rating from our team. Here’s exactly when that premium pays off. After digging into the specs, published performance data, and verified owner feedback, here’s our verdict.

✓ Reviewed using our editorial process: based on manufacturer specs, published performance data, and verified owner feedback. No paid placements, no free products. See our full methodology →

Wayne CDU980E at a glance

Horsepower	3/4 HP
Max flow rate	5,245 GPH
Housing material	Stainless steel motor + cast iron base
Suction type	Top suction (minimises clogging)
Discharge size	1-1/2″ NPT
Min. basin diameter	11 inches
Warranty	5 years
Assembled in	USA

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Wayne CDU980E Specifications

Complete technical specs from Wayne manufacturer documentation:

Specification	Wayne CDU980E
Horsepower	3/4 HP
Voltage	115V AC
Amperage (full load)	12.0 A
Maximum flow rate	5,245 GPH at 0 ft head
Flow at 10 ft of head	4,743 GPH
Flow at 20 ft of head	2,400 GPH
Shutoff head (max lift)	25 feet
Discharge size	1-1/2″ NPT
Minimum pit diameter	11 inches
Housing material	Cast iron
Motor type	Oil-filled, thermally protected
Float switch type	Vertical
Cord length	8 feet, grounded 3-prong
Weight	27 pounds
Solids handling	Up to 1/2″ diameter
Warranty	5 years limited

Two specs that stand out: the 5-year warranty (longer than most competitors including Zoeller’s 3-year) and the vertical float switch (works in narrower pits than a tethered design). The CDU980E is Wayne’s flagship residential pump, designed to compete directly with Zoeller’s premium line.

Who is the Wayne CDU980E for?

The CDU980E is Wayne’s flagship residential sump pump, designed for homeowners who deal with serious water intrusion. If any of these apply to you, this pump deserves a serious look: Not sure if your basement actually needs 3/4 HP or if 1/3 HP will do? Our sump pump sizing guide walks you through how to calculate your peak inflow rate and head pressure — so you match the pump to your real conditions, not a guess.

• You live in an area with heavy annual rainfall or significant snowmelt
• Your basement has flooded before
• You have a large basement (over 1,500 sq ft)
• Your water table is high and your pump runs frequently
• You’ve burned through cheaper 1/3 HP pumps in the past

For homes with moderate water intrusion, a 1/3 HP pump like the Zoeller M53 will likely suffice. The CDU980E is overkill for a dry basement that only needs protection as an insurance policy.

What we like

Top-suction design eliminates airlocks. This is one of the CDU980E’s standout features. Water enters from the top of the pump rather than the bottom, which prevents debris buildup and means you don’t need to drill a weep hole in the discharge pipe. Fewer maintenance headaches, fewer failure points. 5-year warranty is industry-leading. Most residential sump pumps come with a 1–3 year warranty. Wayne’s 5-year warranty on the CDU980E signals real confidence in its durability — and gives you meaningful protection if something goes wrong. Stainless steel and cast iron construction. The motor housing is stainless steel for corrosion resistance, while the base is cast iron for stability and heat dissipation. This combination is notably more durable than the all-plastic or all-thermoplastic pumps at lower price points. Assembed in the USA. Wayne manufactures this pump domestically, which generally translates to better quality control and easier parts availability. What to be aware of Requires an 11-inch minimum basin diameter. The CDU980E is a large pump. If your sump pit is smaller than 11 inches across, this pump won’t fit. Measure your pit before ordering. Overkill for light-duty applications. Running a 3/4 HP pump in a basement that only needs 1/3 HP is like using a truck to commute to work. It works fine, but you’re paying for more than you need. Check your water table and typical pump cycling frequency before upgrading. Battery not included (of course). Like all primary sump pumps, the CDU980E has no battery backup. We strongly recommend pairing it with a backup system — the Wayne WSS30VN is designed to work with this pump specifically.

What Owner Feedback Says About the CDU980E

Recurring themes in verified owner feedback:

What owners praise

• Sheer pumping power. Owners with chronic flooding report the CDU980E keeping up with situations where their previous 1/3 HP pumps could not. 4,743 GPH at 10 feet is serious capacity.
• Quiet operation. The oil-filled motor runs notably quiet — a real advantage for pumps near living spaces.
• 5-year warranty. The longer warranty gives confidence compared to 1-3 year competitors.
• Vertical switch reliability. No tether to tangle, works in narrow pits.

Common complaints

• Overkill for average homes. Some owners note the pump cycles only briefly because it empties the pit so fast — not harmful, but means they paid for capacity they rarely use.
• Higher power draw. More current than the 9.7 A drawn by the Zoeller M53 — factor this into your electrical planning.
• Price. Usually priced above comparable 1/2 HP cast iron pumps such as the Wayne CDU800 (prices vary; check Amazon for the current price). You are paying for the extra horsepower.

Wayne CDU980E vs Zoeller M53: The Key Difference

These two are the most frequently compared sump pumps in the category, and they solve different problems:

• The Zoeller M53 is a 1/3 HP pump optimized for long lifespan and proven reliability in typical residential conditions.
• The Wayne CDU980E is a 3/4 HP pump optimized for moving large volumes of water when conditions are severe.

For a detailed head-to-head, see our Zoeller M53 vs Wayne CDU980E comparison.

How it compares

Pump	HP	GPH	Warranty	Best for
Wayne CDU980E	3/4 HP	5,245	5 years	Heavy-duty use
Zoeller M53	1/3 HP	2,580	3 years	Most homes
Little Giant BSP33V	1/3 HP	2,880 (5 ft)	See listing	Budget buyers

Installing the Wayne CDU980E

Installation is similar to any cast iron submersible, with a few CDU980E-specific notes:

Pit requirements

Minimum pit diameter is 11 inches — the vertical float works in tighter spaces than tethered competitors. 15+ inches is ideal for easy service access. Pit depth should be at least 24 inches.

Discharge line

1-1/2″ NPT outlet. Because the CDU980E moves significantly more water than a 1/3 HP pump, do NOT downsize to 1-1/4″ PVC — you will bottleneck the flow. Use 1-1/2″ Schedule 40 PVC throughout. For runs over 25 feet horizontal, consider stepping up to 2″ pipe.

Electrical requirements

The CDU980E draws 12 amps at full load. A dedicated 15-amp GFCI circuit is required by code in most jurisdictions. If the circuit also supports other devices, you will trip breakers during pump operation. Never use an extension cord.

Check valve considerations

At 4,743 GPH, a cheap flapper check valve will slam hard enough to cause visible water hammer. Install a spring-loaded silent check valve (Zoeller 30-0181 or PumpSpy Silent). The extra $15 is worth it.

Frequently asked questions

How long will the Wayne CDU980E last?

In typical residential service, 10-15 years. The oil-filled motor, cast iron housing, and vertical switch design are all long-lifespan features. Wayne’s 5-year warranty underscores their confidence in longevity.

Is 3/4 HP overkill for a normal basement?

For most homes with standard water tables, yes — a 1/3 HP pump handles the job. The CDU980E shines when conditions are severe: high water tables, deep basements, chronic flooding, or rapid water intrusion during storms.

Can I install the CDU980E myself?

Yes, for pump replacement in an existing pit. Budget 90 minutes for a first-time DIY install. The pump is heavier than typical 1/3 HP pumps (27 lbs) — use caution lifting it out of the pit.

How loud is the Wayne CDU980E?

Quieter than most 3/4 HP pumps due to the oil-filled motor, but louder than a 1/3 HP pump simply because it is moving more water. Expect a low-level hum during operation and water-flow noise through the discharge line. Near living spaces, a spring-loaded silent check valve is recommended.

Does the Wayne CDU980E come with a check valve?

No. Check valves are always sold separately across all major pump brands. Budget $15-$40 for a quality spring-loaded check valve rated for the CDU980E’s flow.

What is the warranty on the CDU980E?

5 years limited warranty. Keep your proof of purchase. Warranty claims go through Wayne directly. Common covered issues: motor failure, housing defects, switch failure.

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