ENGINEERING OFFICE FOR TECHNICAL EQUIPMENT Innovative engineering services in building technology COMPANIES Owner-managed, flat hierarchies, structured project management Competencies management Quality policy SERVICES Customer-oriented solutions, manufacturer-neutral engineering services planning Property surveillance Engineering services CREDENTIALS Projects of the highest quality thanks to many years of know-how education Health & Care Industry CAREER Qualified and responsible employees, continuous training Perspectives Job offers CERTIFICATION Quality management, structured and goal-oriented way of working DIN EN ISO 9001 PARTNER Engagement in associations, nationwide networking Associations network membership HOME CONTACT DIRECTIONS DATA PROTECTION IMPRINT Kassel location Druseltalstrasse 15 34131 Kassel, Germany Phone: +49 (0) 561 930 84-0 Fax: +49 (0) 561 930 84-50 Email: ib@doering-kassel.de Goettingen location Sieberweg 67 37081 Goettingen Phone: +49 (0) 551 8 20 85 79-0 Fax: +49 (0) 551 8 20 85 79-5 Email: goettingen@doering-tga.de © 2021 Doering - Consulting Engineers GmbH

SUPPLY ENGINEERING Sewage, water and gas systems Water supply Water treatment Sewage systems and treatment technology Medical and technical gas systems Extinguishing systems Special systems for kitchens, laundries, treatment and therapy facilities Calculation of the drinking water network according to DIN 1988 Calculation of the drainage systems according to DIN EN 12056 Heat supply systems - heating systems Heat generation, heat distribution and heat application Combined heat and power Energy (recovery) recovery from the environment and waste heat Measurement, control and regulation technology Heat load calculation according to EN 12831 Radiator design according to VDI 6030 Pipe network calculation according to VDI 3805 Underfloor heating design according to EN 1264 Ventilation systems - ventilation and air conditioning systems Ventilation systems Air conditioners Refrigeration systems Thermal component activation Measurement, control and regulation technology Cooling load calculation according to VDI 2078 Energy requirement calculation according to VDI 2067 T 10 + 11 Profitability calculation according to VDI 2067/6025 Air duct network calculations Building automation Manufacturer-neutral building automation systems tendered cross-system system integration HOME CONTACT DIRECTIONS DATA PROTECTION IMPRINT Kassel location Druseltalstrasse 15 34131 Kassel, Germany Phone: +49 (0) 561 930 84-0 Fax: +49 (0) 561 930 84-50 Email: ib@doering-kassel.de Goettingen location Sieberweg 67 37081 Goettingen Phone: +49 (0) 551 8 20 85 79-0 Fax: +49 (0) 551 8 20 85 79-5 Email: goettingen@doering-tga.de © 2021 Doering - Consulting Engineers GmbH