Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. TT-DW/NE – Product Engineering Department 1 Inventing for life years 20

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Domestic Hot Water 2 Heating water for individual comfort, cleaning, cooking and personal use

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 33 TT-DW/NE - Vision & Strategy 3 Strategy Increase differentiation against main competitors with innovative solutions targeting user satisfaction and customer benefit Assure profitability with alternative technologies and cost driven innovations to achieve significant cost reductions and product competitiveness

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. ENG1 HC GAS ENGINEERING 17 ENG2 HC R&D SERVICES 29 ENG3 HC ELECTRIC ENGINEERING 13 ProductsServicesProducts Management and secretary4 Total ENG R&D Organization 4 Fan driven Gas water heaters Open Flue Gas water heaters Electronic Controllers Certification Project Management Development Labs Heat Pump Water HeaterElectric Storage Water Heater CAD and mechanical design

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. 55 R&D Associates overview Technical Competences and Skills Team statistics 84.4% 15.6%  Age  36 years 5 63 TT-DW/NE Product Engineering Sérgio Salústio TT-DW/NE Product Engineering Sérgio Salústio ENG 1 Gas Appliances Sérgio Salústio Gas Appliances FP Marco Marques Gas Appliances OF Victor Santos ENG 1 Gas Appliances Sérgio Salústio Gas Appliances FP Marco Marques Gas Appliances OF Victor Santos ENG2 R&D Services Paulo Couto Mechanical Eng. Carlos Abreu Testing / Prototypes João Capela ENG2 R&D Services Paulo Couto Mechanical Eng. Carlos Abreu Testing / Prototypes João Capela ENG 3 Electric Appliances Sérgio Salústio Electric Water Heaters Celina Gameiro Electronics Eng. Nuno Silva ENG 3 Electric Appliances Sérgio Salústio Electric Water Heaters Celina Gameiro Electronics Eng. Nuno Silva

Confidential | TT-DW/NE | 20/02/2013 | © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Thermotechnology Heat Transfer Fluid mechanics Combustion Hydraulics Electronic Controllers Refrigeration Development fields and technologies Flue gas Heat Exchanger Heat Pump Evaporator Gas burners High efficiency - Condensing Low Nox - Premix Gas water heater controller Heat Pump controller Comfort and Energy management Temperature and emissions controlTemperature and water flow stability High Efficiency - COP Mechanical gas valves Electronic modulation gas valves Water valves Hidrogenerator Heat pump modules 6

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Dimensioning / Calculation Specification Testing Design Review and release Optimization Remove material in the pipe wake (very low speed / heat transfer) Target: Improve quality and reduce costs on the copper heat exchanger Main Requirements: Keep heat transfer (Efficiency > 87%) Reduce material quantity (- 5%) Extended lifetime (+20%) Problem: High thermal stress in the HE and combustion chamber connection Solution: Reduce fin temperature in the corners (remove material) Modeling and Simulation How do we work within product engineering 1 h gas wake << h gas average Round corner: reduce fin length / temperature / thermal stress on HE body 2 Very low heat transfer in the pipe wake FEA to simulate stresses in process manufacturing (DFMA) Prevent fin break in manufacturation Functional Tests – Efficiency / Fin Tº - Ok Reliability Tests Stress limits are quantified – Thermal stress with fatigue damage are simulated with accelerated lifetime cycles (crack test) Design limits: Fin temp. < 220 ºC Improve hotspots: Strength > Limits 2

Confidential | TT-DW/NE | 20/02/2013 | © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Thermotechnology Psychometric Chamber Enthalpy tunnel Shower Room Water Hammer test Certification Tests Room Thermal analysis Infrared Camera Wind Tunnel 6 X Functional test benches Main R&D infrastructures and test facilities 8

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.  Energy efficiency (Gas, electric and refrigeration)  Heating performance Modulation range and power density (Gas, electric and refrigeration)  Increase domestic hot water comfort (reaction time, temperature feeling and stability)  Reduction of Environmental impact (Gas emissions, water consumption, recycling)  Integration of renewable energy sources  Improve user experience and joy of use  Improve appliance aesthetics and easy of use  Reduce product cost (Dimensions, materials, integration, concepts) 9 Energy efficiency Gas, electric and refrigeration Heating performance modulation range and power density Gas, electric and refrigeration Increase domestic hot water comfort Reaction time, temperature feeling and stability Reduction of Environmental impact Gas emissions, water consumption and recycling Improve appliances aesthetics and joy of use Reduce product cost Dimensions, materials, integration and concept Product Engineering - R&D Goals

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Inventing for Life – Main product innovations 1/2 Energy Efficiency Eco- friendly Comfort -27% Inteligent Battery ignition Hydropower Hidrogenerator ignition Compact Compact Size (-27%) 25% savings due to standing pilot elimination Automatic ignition with water flow 25% savings due to standing pilot elimination Battery elimination: 2 Mio Bat. / 10Years Allways ready (no need to replace batteries) Reduction of raw material Temperature adjustment through radio circuit control Innovation Easier to install Celsius Temp. adjustment Remote Control

Thermotechnology Confidential | TT-DW/NE | 20/02/2013| © Robert Bosch GmbH All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. Inventing for Life – Main product innovations 2/2 Energy Efficiency Eco- friendly Comfort World 2 Premix Condensing GWI CAE Low power thermostatic electronic valve (0,1W) HPWH 270 Dynamic stratification control FP Europe Fan sensing combustion management system 350% Renewable energy source (air) Solar system compatible 350l usable hot water with stratification control Low Noise - best in class 106% Low NOx emissions Temperature stability 92% 1 L/min more hot water Highest flue length:10m Smallest dimension nnovation Thermostatic control without mains connection Solar system compatible