Koenders Free Air Windmills
Field tested and proven successful for over 25 years.
A proven low-maintenance, low cost, highly effective method of maintaining water quality!
Buy with confidence, knowing that Koenders Windmills time-tested design features increase reliability, performance and safety.
Windmill Design Features:
- Crankshaft & Bearings
1″ Turned, ground and polished steel crankshaft. Long lasting, heavy duty, durable sealed bearings. - Steamlined, Large-Surface Blades
Engineered for most efficient operation in low and high wind speeds. - Durable and Efficient Diaphragm
Allows windmill to save energy but still produce maximum air volume and maximum longevity. - 1/2″ Piston Stroke
Engineered for most efficient air production and maximum diaphragm life. - Large Tail
The large surfaced tail area provides maximum control in all wind speeds and ensures efficient overall operation. - Strong Tail Arms
Tail arm rigidity further ensures windmill control. - Top Mounted Compressor
Top mounting and connected through a rigid pivot tube, provides smooth operation and mechanical longevity. Compressor top air valve assembly makes for very easy maintenance. - Pivot Tube
Re-engineered to eliminate ice build up. - Tower Design (12′ – 16′ – 20′ – 24′ Heights)
The strong, cross brace reinforcement design gives added strenght to any tower height. This design also discourages climbing of the tower.
The Koenders Windmill can be located up to approximately 1000′ from the water source.
| Windmill Specifications | |
| Capacity | Up to 1.5 CFM (cubic feet of air per min.) |
| Turbine Type | Upwind |
| Rotor Diameter | 65" |
| Swept Area | 23.05 sq. ft. |
| Blade Design | Proprietary |
| Transmission | Direct drive |
| Stroke | 0.5" |
| Overspeed Protection | Automatic |
| Foundation | 3 ground rods; 1" diameter pipe, 4′ long |
| Shipping Information | ||||||
| Product | # of pcs | Description | Weight (lbs.) | Dimension | ||
| H | W | D | ||||
| 12′ KFA | 4 | 1 Head | 39 | 25" | 10-5/8" | 15.25" |
| 61" stance | . | 1 Blade & Tail | 59 | 17.5" | 6.5" | 36" |
| . | . | 1 8′ Tower section | 52. | 48" | 3.75" | 3-9/16" |
| . | . | 1 8′-12′ Tower section | 27.5 | 48" | 2-3/8" | 3-9/16" |
| 16′ KFA | 5 | 12′ KFA plus | . | . | . | . |
| 79" stance | . | 1 12′-16′ Tower extension | 31.5 | 48" | 2-3/8" | 3-9/16" |
| 20′ KFA | 6 | 16′ KFA plus | . | . | . | . |
| 97" stance | . | 1 16′-20′ Tower extension | 39 | 48" | 3.5" | 3" |
| 24′ KFA | 1 | 1 20′-24′ Tower section | 48″ | 3.75″ | 4″ | |
| 118" stance | ||||||
Windmills comparison of Koenders vs other brands:
| Koenders Windmills Inc. | Other Brands | ||||||
| Low | Med | High | Very High | Low | Med | High | |
| Proven Maintenance |
• | . | . | . | . | . | • |
| Proven Longevity |
. | . | . | • | • | . | . |
| Proven Product | . | . | . | • | • | . | . |
| Proven Quality | . | . | . | • | • | . | . |
| Price per CFM | • | . | . | . | . | • | • |
| Warranty | 3 years | 18 months or less | |||||
| Manufactured in | North America | Offshore | |||||
100% of our time is devoted to the design, testing and perfecting of our products.
To Purchase a Koenders Windmill
To purchase a Koenders windmill or accessories, you can Order Direct Online or use our Locate a Dealer form to find the dealer closest to you.
Customize Your Pond Windmill
Create your own custom painted windmill with our wide selection of weather-resistant powder coated finishes. See our Powder Coated Windmills page or call our toll free number 1-888-777-4933 to pick your color selection.
