Voted Best Windmill Aeration System for 2012 by Pond Owners

Pond Owner magazine is devoted to educating owners of fish ponds, farm ponds, municipal ponds, golf ponds and all other fresh bodies of water on how to best keep their pond water healthy and clean. With this in mind over the last 7 years Pond Owner Magazine has been publishing articles so that readers can learn and get ideas on how they can keep their water healthy and clean.

Pond Owner Magazine is continually looking for stories and studies that can inform its readers on environmentally friendly ways to maintain a clean pond and a healthy eco system for its water and all its inhabitants.

Years of studies and scientific research has proven that the most effective and environmentally friendly way to keep water clean is to aerate it. Aeration is the process of dissolving oxygen into water. Having sufficient oxygen in a pond makes it stronger, more able to fight off unwanted bacteria and stagnation.
There are different ways to aerate ponds – electric aeration, solar aeration, windmill aeration and some would even say fountains are aeration systems too.

100% for Certain – Windmill Aeration is the most cost effective, reliable, long lasting and efficient way to aerate a pond. As a result, because aeration is so important and Windmill aeration is the best way to accomplish this goal – Pond Owner Magazine conducts an Annual Survey of pond owners, dealers and readers to determine which windmill aeration system is the best.

Montana State Government - Fish and Wildlife Dep
photo courtesy of Montana State Government – Fish and Wildlife Dept

This year Pond Owner Magazine asked Pond Owners to evaluate windmill aeration systems based on the following criteria:

  • Windmill Aeration Performance in both Low winds and High winds
  • Reliability and Years of Proven Quality
  • Stability of Structure and Engineering Depth of Company
  • Compressor Technology and Efficiency

The Winner for 2012 and for the 5th Year running Pond Owners have voted Koenders Windmill as the best windmill aeration system based on the criteria listed above.
Windmill Aeration Performance in both Low and High Winds

After a detailed design analysis of the various Windmill aeration systems one can see how Koenders Windmills have been designed by engineers to solve a problem rather than by salesmen trying to fit a marketing campaign. Koenders Windmills invented windmill aeration systems over 24 years ago. Now, in their 5th generation release of a truly unique patented design made of light weight galvanized steel the company has clearly separated themselves from all other imitated products that are found on the market today.

Koenders Windmills light weight structure has been designed to work in winds as low as 3-5 mph winds and up to 30 Mph or more before self regulating itself. We liken the engineering of Koenders Windmills to the technology being used in the aerospace industry. For example, the more advanced the design in airplanes the more aerodynamic the design is – and the lighter the weight. Koenders uses structural engineers in their design – the sum of its parts makes for an extremely strong, reliable and efficient windmill aeration system. Be careful of the companies that promote a heavy windmill structure. That should tell you that very little engineering went into the design but a lot of marketing might have. The Koenders Windmill system design has some key features that point out their engineering focus –

  • Ability to compress air in low wind speeds – via their diaphragm based compressor that has been proven over 24 years – not much has changed with the size of the diaphragms being used on the Koenders Windmills. They use a standard 7.5 inch diaphragm – some companies who use diaphragms in their compressors use larger diameter diaphragms. This is extremely important to note. The larger the diaphragm – the more wind you will need to compress the air. It’s like the wheels on a car or truck – the larger the wheels the more gas or energy is required to turn the wheels. This is precisely why Koenders has always stayed with its proven 7.5 inch diaphragm and why when it innovated the dual diaphragm it kept two diaphragms the same size instead of increasing the diameter of one Diaphragm.
  • The publishing and advertising of CFM cubic feet per minute of air. Koenders is the only company that shows how they calculate their CFM at the various pond levels. Koenders does not try to mislead customers into publishing unrealistic CFM numbers that can’t possibly be reached at certain pond depths. Koenders Windmills make every attempt to set proper expectations in the market for their product’s performance. Example, for every 2.3 Ft of water an air diffuser is placed into the pond there is 1 PSI of back pressure that the compressor needs to overcome, to push the air down into the water. With more back pressure, you require more wind to increase PSI, as a result you lose CFM depending on the depth of the air diffuser in the water. Many compressors are not tested to the PSI levels that are advertised and use over inflated CFM numbers to mislead customers. Koenders Windmills engineering show real proven numbers when publishing CFM at various pond depths.

Without a doubt Koenders has the most CFM being produced in the lowest wind regimes. CFM volumes that are measured at the compressor head rather than in the water are misleading customer’s expectations. The aeration systems need to install diffusers at depths as low as possible in shallow ponds and between 12-20 Ft in the deeper ponds.

Many windmill aeration systems will publish high CFM output but when the air diffusers are placed in the water the CFM dramatically drops. Example – a windmill aeration system that promotes 3 CFM or more needs to indicated a what pond depth. If it is 3 CFM out of the water and 0 CFM at 12 FT then the windmill aeration system is of little value unless you have a very shallow pond. This is why PSI is so important – at what PSI does the CFM compress? Again Koenders Windmills pump air at proven PSI levels of upto 30 PSI.

Reliability and Proven Quality

  • Koenders Windmills were first invented in 1988 and for the last 24 years they have consistently worked at perfecting their models of windmill aeration systems. Now into their 5th generation model shows to consumers their commitment to quality and reliability.
  • Koenders Windmills has more than 60,000 windmill aeration systems sold and installed throughout the world. The next nearest competitor has less than 10,000 Windmill aeration systems installed – that competitor is Superior Windmill. A company that has been in business for 10 years and is the next closest competitor to Koenders Windmill.
  • Koenders has a warranty rate of less than ½ % which when you are producing and selling thousands of windmills per/yr is quite impressive. We hear from numerous Koenders customers who have owned and operated their Koenders Windmills for over 15 and 20 years. There was one customer that we heard from this year who had their windmill aerating for over 23 years and just recently explained that they ordered another Koenders Windmill for their neighbour. They had no need for a new one for their own use because it was still operating in fine condition. Just think of the amount of energy costs they would have incurred over all those years if they had installed an electric aerator.

24 years in business and over 60,000 windmill aeration systems installed all over the world counts for a whole lot when we look at the Best Windmill Aeration Systems. The fact that most of these units from 24 years ago are still working and pumping air into water tells us a lot about a company and its products. There are companies in the market that are offering warranties that exceed the number of years they have been making windmill aeration systems. How can that be – they have not even proven that the product can last that long. At least with Koenders Windmills the pond owner knows that the windmill is designed to last decades because it already has.

Stability of Structure and Engineering Depth of Company

Ability to swivel 360 degrees to catch the wind in all directions – they use a standard 3 legged lattice tower to ensure no matter what direction the wind is coming the structure is strong and secure. The 3 legged tower is a key indicator that Koenders Windmills understands engineering. Look at the wind power or the telecommunication industries, you will see that the lattice towers are 3 legged for they have proven to be more stable and reliable than any 4 legged tower. That alone is a good indicator to the consumer that engineering is involved in the design of Koenders Windmill Aeration Systems and its structures. A clear difference that Koenders Windmills seem to have in the market place and is noticed by Pond Owners.

Compressor Technology and Efficiency

Koenders Windmills has only 3 moving parts in its compressor technology – resulting in an extremely reliable and efficient model. It’s designed for the simple function of pumping air into aerate water and lasting through millions of compression. All Koenders parts have been designed for the sole purpose of windmill aeration, unlike other windmills which use vehicle suspension parts. Koenders Engineers designed and tested a solution over 24 years ago and continually improve upon the same inherent design for one function only – to pump air into water. Pond Owners seem to appreciate the focus of Koenders’ design and the proven parts they have continued to use in order to accomplish this important function for pond maintenance.