Weider is the only company in Vorarlberg, which develops and produces heat pumps for the use of groundwater as well as for geothermal probs and horizontal heat exchanger. The company has developed the most efficiant heat pump in Europe, that can heat a family house for only 190 € a year. And in 1977 Weider Wärmepumpen was one of the first companies in Europe, who manufactured heat pumps at all. Today the company is one of the leading producer of heat pumps.

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