The core activity of WIMA is the rental and distribution of heating equipment and systems for various applications, particularly: construction heating (heating of construction sites, tents, halls, etc.), construction drying (dehumidification of air and removal of water damage), festival hall heating (heating of festival tents and halls), and festival kitchen equipment (rental of dishwashers, hot water dispensers, and gas stoves for use in festival kitchens). The company also provides consulting and service for these products and is mainly active in Eastern Switzerland.