WAYNE CDU790 - 1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black

I recently installed the WAYNE CDU790 1/3 HP Submersible Sump Pump in my basement, and I couldn't be more impressed! This pump is incredibly reliable and does an amazing job keeping my basement dry. The heavy-duty construction with cast iron and stainless steel feels solid and durable, which gives me peace of mind knowing it's built to last.One of the standout features for me is how quiet it operates—no loud buzzing or noise that you often get with sump pumps. It’s perfect for keeping things peaceful in the basement, even when it’s running.Installation was a breeze! The pump comes with an integrated vertical float switch, which made the setup straightforward, even for a DIYer like me. I had it up and running in no time.

Great pump. Bought multiple these over the years. Reliable and quiet.

Years ago, I installed a Wayne CDU 790 model to replace two older side-by-side pumps left behind by the previous owners of my house. (The previous owners relied on two pumps in the crawlspace because they had a serious water intrusion problem due to an improperly retired septic system. As the new owner, I mostly resolved that problem by having the old field lines dug up and smashed.)The Wayne pump lasted 13+ years (Feb 2012 - Aug 2025). Its main task was to pump out air conditioner condensate that accumulates during the summer season, as well as to pump out seepage following prolonged periods of rain.It lasted way, way beyond its warranty period. Eventually the float disconnected from the pump activation arm, and the bottom perimeter of the float had somehow badly deteriorated as well, permeated by holes all around. I only (and luckily) learned of these problems due to a recent "pre-vacation" check. The pump motor was still operational, but given the general level of deterioration overall, it seemed like it was time to retire the pump. Since this first unit lasted so long, I just installed another of the same model.I suppose that I should have proactively changed out the pump after about 10 years. Machines ultimately fail, and require periodic monitoring.

We have two sump pumps in our basement to keep it nice and dry. Every 4 years or so, even less, we have to replace one. I have been buying the same brand every time and thought there has to be something better.I have read how good the Wayne sump pumps are and decided to try one out. I got the model WAYNE CDU790 and it is absolutely great. Right away out of the box you can feel is it quality. The old ones I bought were thermoplastic and only one lasted the expected 5 years. Some lasted a little over 4 years, most did not. The cast iron is heavy duty with stainless steel hardware holding it all together. The impeller is also stainless steel protected by a cast iron shroud. It has a long cable for reaching the outlet.The installation was very easy, and the operation is so quiet that I was worried that it wasn't working. I had to remove the cover to see if it was working and it is. My old pumps were so loud you could hear them upstairs every time they ran. The Wayne pumps water MUCH faster than the old pumps I bought. The sump empties in a matter of only a few seconds.This is a solid sump pump with a 3 year warranty. I registered it online immediately and am confident it will outlast my old pumps by far. The expected life if 6 years. For all of that, I give it 5 stars. Also for a super value and price as well as terrific quality.

Works great,very quiet,plenty of cord,easy install. See how it holds up

Pump seems well built. Cycles smoothly and drains the sump pit quickly. Is pretty quiet when operating. Being cast iron it should last many years I'm hoping.

This pump saved the day!! Bought this as a replacement to a burnt out pump. Plumbed this one in, turned it on and the water pumped out in less than three seconds. This pump was literally hundreds cheaper than the big box stores.

Easy to install/replace