Currently most of the South African wine cellars have Weideman systems fitted.

Made from pressed and seam-welded stainless steel sheets, the Weideman Heat Exchanger is used for heating or cooling using steam, water, glycol or refrigerant. Easy to clean, with no crevices to trap particles of food or dirt Weideman offers a wide variety of uses in the food, fish and wine industries. The direct cooling in tanks makes Weideman 30% more efficient than dimple jackets, or running water over the outside of the tanks. It also ensures a dry cellar, or in the case of other industries, a dry factory.

Besides the seam-welded stainless steel heat exchange systems, Weideman Engineering also manufactures industrial stainless steel equipment. Only 316 grade stainless steel (surgical quality), which is corrosion resistant and hygienic, is used.