Wayne 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch-CDU790 at The Home Depot


Model # CDU790

Internet # 100026900

1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch

Wayne 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch

This item has been discontinued.
The Home Depot no longer carries this specific product.

$129.45 / each
  • Solid, well constructed and very quiet
  • Consumers find it quick and easy installation


In Stock



Model # CDU790

Internet # 100026900

The WAYNE 1/3 HP Submersible Sump Pump features a vertical float switch for automatic operation in sump basins of 11 in. diameter or larger, and an oil-filled, thermally protected motor helps prevent overheating. Its maximum discharge flow at 10 ft. of lift is 2700 GPH.

  • Pumps up to 2700 gph 10 ft.
  • Vertical float switch for automatic operation
  • Top suction design filters debris and minimizes clogging
  • Designed for easy installation without any plumbing changes
  • Float guard protects switch from hang-ups
  • Epoxy-coated steel, high performance 1/3 hp motor
  • 1-1/2 in. NPT discharge and durable cast iron base
  • Ul listed, CSA listed
  • On 9 in. - off 4 in.

Info & Guides

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Amperage (amps)  9.5  Assembled Depth (in.)  10 in 
Assembled Height (in.)  14 in  Assembled Width (in.)  10 in 
Battery Back-Up  No  Cord Length (ft.) 
Discharge Flow @ 0 ft. (gallons/hour)  3800  Discharge Flow @ 10 ft. (gallons/hour)  2700 
Discharge Flow @ 15 ft. (gallons/hour)  1700  Horsepower (hp)  1/3 hp 
Housing Material  Cast-Iron  Manufacturer Warranty  3 Year Limited Warranty 
Maximum Pumping Height (ft.)  21  Maximum Working Temperature (F)  120 
Minimum working temperature (F)  40  Power Type Required  AC 
Product Depth (in.)  10  Product Weight (lb.)  16.95 lb 
Pump Switch Type  Vertical  Returnable  90-Day 
Self-Priming  Yes  Submersible  Yes 
Sump Pump Outlet Diameter Type  1-1/2 FPT  Switch-Off Height (in.)  4" 
Switch-On Height (in.)  9"  Voltage (volts)  115 


Rated 4.7 out of 5 by 104 reviewers.
Rated 5 out of 5 by Looks to be well built and is American made. Less than one month after receiving and installing this pump is too early to rate this but HD insists. It arrived on time, looks well built and was easy to install. Whether it will last and perform well only time will tell. It is American made. February 18, 2014
Rated 5 out of 5 by Quality Product, Easy Installation I ordered this sump pump online from Home Depot, as it was not available in stores. The reviews were very positive for this unit, and the price was about what I wanted to spend. The unit arrived in three days after ordering, which was great considering the shipping was free. This sump pump replaced a sump pump whose switch had failed. Including cutting new PVC pipe and cleaning out the sump pail, the installation took less than one hour. The units looks very solidly built, and I like that the suction is from the sides rather than from the very bottom--makes it much less likely to clog up. The unit runs quietly, and the cord length is more than ample. Overall, very happy with the purchase. October 16, 2013
Rated 5 out of 5 by Wayne 1/3 hp Sump Pump Great pump which was ready to go out of the box. Took me approx. 20 min to cut the PVC pipes to size and hook the whole thing up. Has excellent pumping pressure which runs 7 ft vertical and then 30 ft horizontal out of the house. The discharge pressure was so high the water was trenching a huge hole in the yard so I had to fit another 20 ft of fire hose on the end of the PVC pipe. All in all I would definitely recommend this pump to anyone. February 25, 2014
Rated 5 out of 5 by High Quality Pump at a Great Price I've had three other sump pumps prior to this one. One of them was guaranteed for life, but various parts failed on it such that I replaced it three times in three years prior to its latest failure. I selected this pump based on the reviews and had it shipped overnight because my basement was getting very wet with a failed sump pump. It was tempting to go with something in stock that I could just go pick up, but the reviews on those available were mixed. The quality appears to be very good and installation was easy. The float switch works very well and has a perfect length of travel even in my fairly shallow sump pit. The issues I read about do not seem to be major compared to the other types of failures that I've had. For example, if the float rod rusts out it will be easily replaceable with a rod made of better material. I had been worried about noise based on one of the reviews, but this pump is not very loud. I have it in an unfinished basement with no insulation between the first floor joists and do not really hear it on the first floor. It is almost as quiet as my 12V backup sump pump and no where near as loud as a previous pedestal pump I had that made all sorts of noise. It is much much quieter than my oil furnace that is nearby that runs more often. I will provide an update in the future if I have some sort of failure or in a few years if it is still working well. March 18, 2013
Rated 5 out of 5 by Seems great so far! Reviewing a sump pump is somewhat difficult in my opinion. Obviously the trust test of its value and quality is if it doesn't fail before I need/want to replace it (maybe 7-10 years from now). Would it not live up to that expectation, my rating could change significantly (the degree to which would depend on the amount of water damage and frustration it caused me). : ) That said, the construction of this product looks awesome. Additionally, the plumber who installed this pump for me said it looked like a good one, and it was so easy for him to install (he said one of the 2 or 3 easiest he's ever done), that he gave me a discount off of his normal flat installation fee. June 24, 2013
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