Customer Feedback
Video Testimonials
We went to Ontario, Canada to visit some of our customers and this is what they had to say about our Koenders Free Air Windmill Aeration Systems.
Click the image beside each testimonial
to see the video clips.
"The Koenders system is something I would recommend to friends and neighbours. The main benefit I see from the Koenders windmill system is much better water, clear. It will help suppress weed growth in the pond, its basically maintenance free, you're utilizing the wind to pump the air down your line and its not costing you anything once you made the initial cost of your windmill. I think the Koenders system, for what you're getting, you're getting good value for the money."
"We put the windmill in one year ago to help with an algae problem we had and it pumps the oxygen in there and it really helped clear the water up. Within one month we could notice a noticeable difference in the clarity of the water. The number one benefit would be keeping the algae down and a second benefit would be oxygen for fish. The Koenders aeration system works very well for us. We're quite happy with it."
"The reason why I went to the Koenders aeration system is because we don't need hydro to operate it and very little maintenance. I like the way it looks. It looks traditional. Structurally it's simple and it operates fine. It can not over-spin. I would recommend the Koenders aeration system to anybody that is looking for something that is maintenance-free and does a good job. Absolutely."
"We have an air pump which is manufactured by Koenders and I have it rigged up so that it will pump water into a barrel and then it recycles back into the pond so in the summer time my cattle have instant water and clean fresh water 100% of the time. That was another reason that we put the windmill in because we had to figure out a system to keep the cattle away from the main source of water to keep a fresh supply of water. We do let the windmill run and the air goes into the water 365 days of the year and as of yet I've never had a problem. In the winter time the pond will ice over and even if it's really cold you'll still see that hole where the air is coming up and keeps it free."
"We're very pleased with Koenders windmill. It was well built and we're very happy with it and we enjoy it so very much. When we're sitting out here in the summer, people drive by and slow down and the odd one has dropped in and wondered where we got it and we told them it was Koenders. It adds beauty to our place. Many people have commented on how nice it looks. They said our place looks like a park now."
"We've had that windmill behind us for about 10 years now. It does a tremendous job of keeping the ice off in the winter and therefore assures that our fish will survive. One of the nice things about it is once you've paid for the windmill there are no operating costs - virtually it works for free. It does a great job of keeping the pond healthy and the fish happy, adding oxygen and degassing the pond."
"The Koenders windmill aeration system is a fairly simple and beneficial way to achieve aeration for your pond and it gives you a good amount of oxygen into the water which helps prevent algae growth. It's beneficial if you have any fish in the pond plus it does prevent winterkill for the fish."
"It's a fantastic idea to be able to aerate by the wind as opposed to using power. It looks nice to have a windmill on your property. We're thinking about having our other pond done, dredged and drained out, put a windmill on the other side and use the Koenders system to be able to aerate the pond. Would I recommend it? Definitely!"
"I've had these windmills now for 6 or 7 years. I have put no maintenance into them at all. They keep the water open in the winter time and so far I've had good luck with the fish that I have in there so it must be putting pretty good oxygen in there. Today is very still. Even though there's not much breeze now, the windmills are still slowly turning and pumping air into it so I do believe they're a good thing."
"I would recommend it to anybody that has a pond. It doesn't take hydro and it takes very little wind and maintenance-wise I probably spent $25 in 22 years that I've had this system so to me it's the most economical way to go if you're going to aerate your pond and in the winter time keep it open. The number one benefit is the amount of air that its moving and it keeps the pond open. I need at least ten feet square to keep the predators away from my birds. I've had my first one for over twenty years and the following year I bought the second one because I was so happy with it so anybody that wants some information, give me a call."
Here's what some of our customers have to say:
Koender Windmills,
Thanks to your detailed instruction manual and assembly guide for our Koenders Windmill Aeration System the installation went smooth and easy. I found that by following it step-by-step was the best way to go and it all started making sense and coming together early in the assembly phase. Our windmill is now up and running and works great. Not bad for a 60 year old women. By the way the pivot pairs made it really easy to assemble as well.
Many Thanks.
"Here are two pictures of the windmills. The aeration really works - energy for free. We love it!"
"After assembling the windmill in our shop (1 guy about 8 hours), we took it to the site and anchored the pivot points in high-strength concrete footings. After setting overnight, we tipped it upright and anchored the third stake. Hooking up the airlines was a snap, and we now (as soon as we receive more air line) have 3 diffusers in 3 different locations throughout the pond. The building behind the windmill is our pump house which feeds the irrigations system. Clean, algae-free water for irrigating our golf course is crucial, and the main reason we chose to purchase a Koenders windmill aerator. I will send you a few photos later today. Thanks for all your help!"
"As an aquaculture consultant, I try to minimize fish diseases and parasites and maximize fish production. Three installed Koenders aeration windmills help. In North Florida your windmills economically improve water quality by aeration, reducing sedimentation, algae control, combating stratification and improving water temperature control. This resulting improved water quality lets North Florida fish farmers maximize stocking capacity and disease and parasite control".
"Attached is a photo of my new Koenders pond aeration windmill. I should add that I had great fun assembling it in my garage over the (cold) winter; the instructions that arrived with the parts were very useful and your service in response to telephone questions very friendly, prompt and professional."
"We purchased one of your windmills to aerate our pond in South Florida last year and are amazed at how clean the water is. But more importantly, it survived Hurricanes Frances and Jeanne. We lost around 7 pine trees, but your windmill is still standing and working just fine. Thank you for the great product."
"I could not be happier with the results, in 2 months you can see a marked improvement in the water quality. We have already had 2 ducks & a family of water fowl take up residence ... The mill was easy to assemble & erect & has performed perfectly ... A happy customer "
"I have owned a Koenders Windmill for nine years. I have had to replace the front bearing once. I contacted Koenders to see if there was anything else I should do; they told me that a heavier crankshaft and bearing update was available. I was very pleased that I could improve my windmill without having to replace the whole machine. I also replaced the original diaphragm, even though it showed little wear. My windmill runs like a new machine. Thank you for a machine well built."
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"Just thought I'd send you a picture of how the Koenders Windmill Aeration System has kept out pond open this winter."
"I purchased two Koenders wind aerators in the summer of 2002, for my 4 acre lake. I could not be more pleased. The units are completely maintenance-free and extremely reliable."
"On July 18, 2000 we installed our first Koenders Free Air Windmill on the shoreline of our 20 acre lake at 8850' altitude. This windmill worked with such efficiency that we installed another windmill the next year. The Windmills work year round and operate efficiently at low wind speed. They have exceeded our expectations; they are efficient and require very little maintenance."
"United Farmers of Alberta Cooperative has been dealing with Koenders Windmills for many years and have sold their Windmills throughout the entire province of Alberta. We have had great success with their product and have been very pleased with both the High Quality and Support provided by Koenders."
"I am so pleased with my last purchase of one of your windmills. It has performed beyond all my expectations. I like it so much that I ordered another one."
"2 years and really like it. I want to let you know how pleased I am that, for the last 2 years I've had one of your windmills aerating my 1 1/2 acre lake. Ours is one of the clearest and most weed-free lakes in our area. The Dealer I purchased it from has been great to work with."
"The water quality improved quickly...within 2 weeks of the installation"
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"I am sure my fish could not have survived this winter had it not been for my Koender's windmill. The first picture was taken the week before Christmas. That was the last time I saw it completely free of ice. Since then I have had one partial melt around the edges which lasted for a couple of days but it has also been cold enough to freeze it over completely.
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Even then, you could still see where the windmill was working, aerating the water under the ice.
Today, after two days of unseasonably warm weather, we are back in the deep freeze... but my Koender's windmill just keeps working (notice the open water near the center of the pond!) ... churning in fresh air deep under water.
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As I was riding my Harley around Valley City last summer, I could not help but notice the number of windmills appearing recently by ponds large and small. I cannot imagine anyone in Ohio who has a stocked pond ever being without such a device again. I know I will never be. It pays for itself with every restocking it saves! Thanks again for helping me acquire such an essential and functional product. It gave me a great sense of satisfaction and accomplishment to assemble and set it up myself. What a great environmental statement!"
"Hi Koenders. Here is a formula for success.
Koenders Windmill + Wind = Clear Water
We installed a windmill on our pond bank to aerate the water for better fish and livestock usage. We have a frost proof tank, which is gravity fed with a float valve below the pond. We noticed that several months after we installed the windmill the water was so clear that we could see the bottom of the tank. The whole pond is much clearer but I don't understand fish talk to hear their comments."
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