Walter Lüchinger AG
Widnau
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Walter Lüchinger AG installs heat pumps for new builds and renovations in homes, businesses, and administrative buildings, and also fits heat pump water heaters. The company works across heating, ventilation, air conditioning, and plumbing.
The company was founded in 1991 by Walter Lüchinger, initially in plumbing; the heating business followed around 2001, and ventilation came later. It works in the St. Gallen Rhine Valley and the rest of eastern Switzerland.