Wayne CDU1000 Review (2026): 1 HP, 6,100 GPH, 5-Year Warranty

Last updated: September 30, 2026  ·  Reviewed by the Sump Pump Central editorial team.

Affiliate disclosure: Sump Pump Central is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases. Full disclosure →

Prices mentioned on this page are approximate and subject to change. Check Amazon for the current price.

Bottom line: The Wayne CDU1000 is the 1 HP flagship of Wayne’s submersible lineup — 6,100 GPH, a 5-year warranty (longer than the CDU800’s 3 years), and the same weep-hole-free top-suction design that makes Wayne’s pumps easy to install. It’s the pump to reach for when your basement genuinely needs maximum flow: large footprints, high water tables, or finished basements where you want the biggest safety margin available in a residential submersible.

The CDU1000 sits at the top of Wayne’s residential submersible lineup: a full 1 HP motor, a stainless-steel motor housing paired with a cast-iron volute, and a 5-year warranty, the same term as the 3/4 HP CDU980E. It’s assembled in the USA and, like the CDU800 below it, uses a top-suction anti-airlock design that skips the weep hole entirely.

Why step up to the CDU1000

The honest answer is flow rate and peace of mind. At 6,100 GPH, the CDU1000 out-pumps the CDU800 by exactly 1,000 GPH and comfortably exceeds what almost any residential basement will ever demand — which is the point. If you’ve had a flooding basement before, have a high water table that keeps the pit cycling frequently, or you’re protecting a finished basement where even a short pump failure means real damage, the extra headroom this pump provides is cheap insurance relative to the cost of a flood.

Wayne backs the CDU1000 with a 5-year warranty, two years longer than the CDU800’s 3-year term — a sign of the confidence Wayne has in the 1 HP unit’s motor and components for sustained, heavier-duty use.

Wayne CDU1000: Full Specs

What we like

Best-in-lineup flow rate. 6,100 GPH gives you the largest safety margin of any Wayne submersible, useful for large basements, high water tables, or finished spaces.

5-year warranty. Matched among Wayne’s submersibles by the CDU980E, and longer than the CDU800’s 3 years.

Same no-weep-hole design as the CDU800 and CDU980E. Faster, simpler installation with one less maintenance point.

Quiet for its output class. Wayne specifically engineered this model for “ultra-quiet” operation relative to its output, useful if the sump pit is near living space.

What to be aware of

It’s overkill for a small, dry basement. If you’ve never had a flooding issue and your pit rarely cycles, the CDU800 or even the Zoeller M53 will handle the job for less money — you’re paying for headroom you may not need.

Higher amperage draw. A 1 HP motor pulls more current than a 1/2 or 1/3 HP unit; confirm your circuit is rated appropriately, especially if the sump pump shares a circuit with other equipment.

Price premium over the CDU800. You’re paying more than the CDU800 for the extra 1,000 GPH and 2 additional years of warranty — worth it if you need the capacity, unnecessary if you don’t.

Who should buy the Wayne CDU1000

Choose the CDU1000 if you have a large basement footprint, a history of flooding, a high water table, or a finished basement where the cost of pump failure is high. For most standard, dry basements, see our Best Submersible Sump Pumps guide for a better-value pick sized to typical needs.

What pairs well with the Wayne CDU1000

Even a heavy-duty primary like the CDU1000 can’t run without power. The Basement Watchdog BWSP is a natural backup pairing — it sits alongside the CDU1000 in the pit and takes over automatically during an outage or a primary failure.

Frequently asked questions

Is 1 HP overkill for a residential basement?
For most homes, yes — a 1/3 to 1/2 HP pump is sufficient. The CDU1000 is worth the upgrade specifically if you have a large basement, high water table, or a history of flooding.

How is the CDU1000 different from the CDU980E?
The CDU1000 is the 1 HP model at 6,100 GPH; the CDU980E is 3/4 HP at 5,245 GPH. The CDU1000 has the longer 5-year warranty and higher flow ceiling.

Does it need a dedicated circuit?
Wayne recommends confirming your circuit can handle the motor’s amperage draw — check your local code and existing circuit load before installing a 1 HP pump.

Our verdict

The Wayne CDU1000 is the pump to buy when you need maximum flow and a 5-year warranty. It’s not the right choice for every basement, but for the basements that need it, nothing else in this review lineup matches its capacity.