What is the difference between a windmill and a windpump?

A windmill is a general term for a machine powered by wind, traditionally used for grinding grain, pumping water, or generating power. A windpump is a specific type of windmill—built purely for pumping water using mechanical energy. In Australia, when people say "windmill," they’re usually referring to a windpump.

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What is the difference between a windmill and a wind turbine?

A windmill uses mechanical motion to do physical work—like lifting water with a pump rod. A wind turbine, on the other hand, converts wind energy into electricity. Both are wind-powered, but they serve very different purposes.

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How does a windpump work?

A windpump uses a set of blades (called a fan) to catch the wind and turn a gearbox at the top of the tower. This drives a vertical rod up and down, which connects to a pump cylinder below ground. With each stroke, water is lifted up through the pipe and out to where it’s needed—whether that’s a trough, tank, or dam.

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How deep can a windmill pump water?

Most windmills can pump water from depths of up to 100 metres, depending on the size of the windmill and the condition of the equipment. Shallower bores are more efficient, but with the right setup, deeper water is no problem.

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Can a windmill pump water up a hill?

Yes, it can—with enough wind and the right-sized windmill. Windmills generate mechanical pressure, so they can lift water vertically and even push it over a rise, into a storage tank or trough on higher ground. The key is matching the setup to the landscape.

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How often is the oil changed in a windmill?

It’s recommended to change the oil in a windmill every 12 months or sooner if it’s been running hard or working in dusty or coastal conditions. Regular oil changes help keep the gearbox in top shape and extend the life of your mill.

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How often are the pump buckets replaced in a windmill?

Pump buckets usually need to be replaced every 2 to 5 years, depending on usage and water conditions. If your windmill is losing prime or flow has dropped off, worn pump buckets could be the culprit—and it might be time for a service.

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Do you install secondhand windmills bought from other places?

Yes—we install and service all kinds of windmills, even if you bought it off Marketplace or picked it up from the old bloke down the road. We can check it over, refurbish what’s needed, and make sure it’s working safely and efficiently.

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Do you buy old or broken windmills?

We sure do. If you've got a windmill sitting idle, rusting in the paddock or shed, we’ll come have a look. We’re always on the lookout for windmills to recondition, salvage, or recycle for parts. Let us know what you’ve got.

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Are spare parts still available for older windmills?

Yes. Fetlock manufactures and sources a wide range of aftermarket and reproduction parts, including for old Southern Cross “Z” pattern mills. All made from high-quality Australian steel and hot dip galvanized for maximum durability.

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Can you convert an ornamental windmill into a working one?

Yes—with our feature pump kit, we can turn most ornamental windmills into functional water-pumping features. Great for garden ponds, stock troughs, or just adding a bit of movement to your property.

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Do windmills work during storms or high winds?

Windmills are built tough—but like any mechanical equipment, they have their limits. In high winds, the fan tail will usually turn the mill out of the wind to protect it. We recommend checking and servicing after storm seasons to prevent long-term wear or damage.

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Is there a good time of year to buy or install a windmill?

Absolutely. Now is always a good time—but particularly in the lead-up to the end of financial year if you're looking to claim it as a tax-deductible asset for your business or farm. We also offer seasonal promotions, so keep an eye on our social media.