Residential Geothermal Technology How Geothermal Works

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1 boschheatingandcooling.com 1 Residential Geothermal Technology How Geothermal Works Geothermal Heating and Cooling boschheatingandcooling.com

2 1 Residential Geothermal Heat Pumps About the Bosch Group The Bosch Group has been a leading global supplier of technology and services in the areas of Automotive, Industrial Technology, Consumer Goods and Building Technology for over 100 years. Every Bosch product is built with one goal in mind; to enhance the quality of life by providing innovative technological solutions. Bosch is a leader in the development of next generation technologies that deliver improved performance and peace of mind while conserving and sustaining natural resources. Bosch is highly regarded for its development of automotive braking and steering safety systems (ABS) which have been improving automotive performance for over 30 years, helping reduce the number of accidents on North America s roads and highways. Environmental stewardship inspires and drives Bosch product development. Bosch is a leader in the development of next generation technologies that deliver improved performance and efficiency while conserving natural resources. In the area of sustainable mobility, we re helping reduce the fuel consumption and CO 2 emissions of new vehicles. Energy efficiency and environmental protection are also shaping our Industrial Technology, Consumer Goods and Building Technology products. Green technologies, such as gas tankless water heaters, wind power and geothermal heat pumps are perhaps the best examples of smart technologies growing in demand and shaping the future of Bosch. Bosch Thermotechnology in North America Bosch Thermotechnology is a leading source of high quality water heating and comfort heating and cooling systems in North America. The company offers Bosch tankless water heaters, electric point-ofuse water heaters, water heater storage tanks, radiant heat products, Buderus and Bosch wall-hung boilers, Buderus floorstanding boilers, Bosch water source heat pumps, Bosch geothermal heat pumps as well as controls and accessories for every product line. Bosch Thermotechnology is committed to reinventing energy efficiency by offering smart products that work together as integrated systems, which enhance quality of life in an ultra efficient and environmentally friendly manner. Proven and tested technologies Bosch heat pumps are made by highly trained and skilled workers in our factory based in Fort Lauderdale, Florida. They are manufactured with rigorous standards and factory testing ensuring high efficiency operation over the life of the unit. Bosch s ISO 9001 and ISO certified facilities provide consistent quality in every unit built.

3 boschheatingandcooling.com 2 Bosch Geothermal Heat Pumps Sharing Energy with the Earth Bosch Geothermal Systems bring your home in harmony with nature, while providing unmatched energy efficiency at a price that can t be beat. Our geothermal systems work in concert with the stable earth temperatures to provide heating in the winter, and cooling in the summer. Much like the way the roots of a tree exchange the essentials of life with their leaves and branches, a Bosch geothermal heat pump provides superior comfort and a more tranquil environment to your home and family via our system s smooth operation and consistent temperatures. You will experience amazing peace and tranquility, and efficiency while your Bosch geothermal system saves energy for generations to come. That s because Bosch is Invented for Life. Cooling Mode Heating Mode

4 3 Residential Geothermal Heat Pumps Operation Modes of a Heat Pump Outside, temperatures fluctuate with the changing seasons, but underground temperatures don t change nearly as dramatically, thanks to the mass of the earth. Four to eight feet below the ground, the temperature remains relatively constant year round. A Bosch geothermal system, which typically consists of an indoor heat pump and a buried system of pipes called a ground loop, and/or a well system, capitalizes on these constant temperatures to provide free energy.

5 boschheatingandcooling.com 4 Winter: Heating Mode In winter time, fluid circulating through the earth loop (or well) absorbs stored heat from the ground and carries it indoors. The Bosch geothermal heat pump compresses the heat to a higher temperature and distributes it throughout the home. Summer: Cooling Mode In summer time, the process reverses, and the cooler earth absorbs the heat from the home, returning cooler fluid to the Bosch geothermal heat pump. This fluid is typically cooler than the outside temperatures, providing a more efficient operation and energy savings.

6 5 Residential Geothermal Heat Pumps Earth Coupling Options Just like trees and plants have different root systems, there are several coupling options to fit different climates, geologies, and lifestyles. Your Bosch geothermal expert will know which works best for you. Vertical Ground Loop System Horizontal Ground Loop System Pond/Lake Loop System Pond/Lake Loop System Well Water System

7 boschheatingandcooling.com 6 Vertical Ground Loop System Vertical Ground Loops are perhaps the most common earth coupling system, primarily because they make good use of limited space. Holes are drilled into the earth, and then a pair of High Density Polyethylene (HDPE) pipes, connected by a U bend at the bottom are inserted into each hole. The bore holes are sealed with an environmentally safe grout material to enhance the transfer of heat to and from the earth, and to protect the subterranean environment. The underground pipes are connected together and run neatly into the home and are connected to a Bosch geothermal heat pump.

8 7 Residential Geothermal Heat Pumps Horizontal Ground Loop System Horizontal ground loops are often less expensive to install, but need more surface area. Rather than drilling, trenchers or excavators are used to dig 4 to 6 feet deep (or more), and loop variations ranging from single pipes to slinky style are laid at the bottom of the excavation. The piping is connected together, and run into the home for connection to a Bosch geothermal heat pump. The excavation is backfilled, and returned to its original condition.

9 boschheatingandcooling.com 8 Pond/Lake Loop System Pond loops are often the least expensive application as a geothermal source. Though bodies of surface water fluctuate with ambient temperatures, these fluctuations are not as marked as actual ambient temperatures. This application is well-suited in situations where the body of water is large enough, and where boating, fishing, or other activities do not pose a risk to the loops. Pond loops can provide advantages to marine life.

10 9 Residential Geothermal Heat Pumps Well Water Loop System Also referred to as Pump to Reinjection or Class V Thermal Exchange Well, these systems are often the best choice for cooling dominant climates (including residential) where the warm climate predominantly requires cooling, and commercial applications. A pair of boreholes is drilled, one as the source well, and one as the injection well, and the water is pumped from the aquifer through the geothermal heat pumps, and injected back into the aquifer with no chemical change. Talk to your Bosch Geothermal representative about your particular application.

11 boschheatingandcooling.com 10 Advantages of Bosch Geothermal Systems Bosch Geothermal Systems provide some of the most efficient heating and cooling available in the world today. Being environmentally friendly has its benefits. Beyond sharing the abundant thermal energy stored within the earth and saving you money, considered these advantages that you get just by going to geothermal: u You can choose to have all of your equipment indoors providing a quieter environment u Storm proofing your home and HVAC system nothing outside to be damaged by inclement weather u Longer-lasting comfort because equipment is safe inside, and your loop or well can last for generations to come u No more burning of fossil fuels for heating geothermal heat pumps can provide all the heat needed for your home u Superior comfort for both heating and cooling modes better humidity removal in the summer for a crisp, cool environment; more even and comfortable heating in the winter, for a cozy feel u Thermal load sharing you can use waste heat for your domestic hot water, pool and spa Environmentally Friendly Bosch s green technology is one of the most environmentally friendly ways to heat and cool your home. The system has no direct carbon dioxide emissions, and with only positive effects on the environment. Bosch s geothermal installations reduce greenhouse gas emissions to improve our world s climate. Reliability and Unmatched Quality The ground loop/well system often lasts for generations, and your Bosch geothermal heat pump is built for the long haul. We are so confident that we back each residential heat pump with a limited warranty on all parts and labor up to 10 years! Visit boschheatingandcooling.com for specific heat pump warranties and details. Being Green Means Saving Green Green is beautiful, and Bosch geothermal s attractive environmental benefits accent our commitment to a reduction of energy consumption and elimination of carbon emissions. Geothermal HVAC systems are recognized by the US Department of Energy as the most efficient heating and cooling available, and with uncapped 30% tax credits through 2016 on the entire installation costs of your Bosch geothermal heat pump system, your savings are compounded. Quiet Operation Synonymous with environmental friendliness, Bosch has a vested commitment to your family s peace and tranquility. Our geothermal heat pumps are engineered to be quiet, which helps to provide a peaceful home environment.

12 11 Residential Geothermal Heat Pumps Why Bosch Geothermal Heat Pumps? Total Operating Costs Example Comparison Based on South Bend Airport Weather Data, South Bend, IN, Electric per kw 0.11, Oil per gallon 3.86, Propane per gallon $4636 $4114 $3600 $2853 Awarded Most Efficient The Bosch Greensource CDi Series SM Model is recognized by ENERGY STAR as the Most Efficient in $1699 Geothermal Heat Pump Heating & Cooling System Electric Resistance Heat w/ 13 SEER AC Oil Heating 95% AFUE w/ 13 SEER AC Propane Heating 90% AFUE w/ 13 SEER AC Air to Air Heat Pump 15 SEER w/ Electric Heat Comparison Sound Ratings (Decibels) The lowest average sound rating is 52dB for the Greensource CDi Series SM 3 Ton unit. Based on a weighted overall (db), according to ARI-260:2001(100hz-10kHz). Blender Alarm Clock Average Radio Bosch Heat Pump Conversation Quieter Louder

13 boschheatingandcooling.com 12 Comparison of Energy Sources Heating Operating Relative Cost Estimate Electric Resistant Heating Propane Heating Dry Wood Heating 81% 75% 100% Oil Heating 59% Natural Gas Heating Ground Source Heat Pump 38% 31% Lowest Operating Cost Estimated heating costs of operation for a building with 39,000 Btu/hr Design Heat Loss at -3 F. Estimates based on the following energy costs: Electricity - 15 cents per kilowatt hour; Natural Gas - $1.36 per therm; Propane - $2.73 per gallon; Oil - $2.95 per gallon; Dry Wood - $450 per full cord. Source: 2013 Phoenix Energy Supply; Bosch CO 2 Relative Estimate Dry Wood Heating 100% Oil Heating Electric Resistant Heating Propane Heating Natural Gas Heating 58% 55% 39% 34% Ground Source Heat Pump 15% Lowest CO 2 Emissions Estimated CO 2 emissions for a building with 39,000 Btu/hr Design Heat Loss at -3 F. Estimates based on the following CO 2 emission rates: Electricity lb CO 2 /KWH; Natural Gas lb CO 2 /MBTU; Propane lb CO 2 /MBTU; Oil lb CO 2 /MBTU; Dry Wood lb CO 2 /MBTU. Source: 2013 Phoenix Energy Supply; Bosch

14 13 Residential Geothermal Heat Pumps Cost and Payback Geothermal HVAC systems are recognized by the US Department of Energy as the most efficient heating and cooling available, and with an uncapped 30% U.S. Federal tax credit available through 2016 for the entire installation costs of your Bosch geothermal heat pump system, your savings are compounded. Bosch geothermal systems are among the longest lasting, most efficient technologies available for heating and cooling. So while they cost a little more to install the first time (because of the geothermal loop/well), the payback period and return on investment can be rapid. With an energy consumption reduction of 25% to 70% depending on the differing climatic regions and installation comparisons, you will likely find no better return on your investment. Limited Residential Warranty Coverage for your Geothermal Heat Pump With the limited residential warranty, you receive peace-of-mind knowing you will receive replacement parts protection for up to 10 years. This standard offering covers all components incorporated into the unit cabinet at the time of manufacture. Other components or parts that are purchased from Bosch and installed in the field have a 1 year replacement parts warranty from proof of certificate of occupancy date or proof of certified start up date, unless otherwise noted. Many units also come with a standard 10 year labor-allowance included for the replacement of any defective component to help offset labor expenses if a component should fail. Visit boschheatingandcooling.com for specific heat pump warranties and details. 30% Tax Credit for Geothermal Heat Pumps Home owners who install ENERGY STAR qualified geothermal heat pumps are eligible for a 30% tax credit on the cost of the geothermal system including all installation costs. There is no cap on the federal tax credit. Presently, these tax credits are only available through the end of Additionally, many areas have local incentives for utilities, counties or states. Visit the DOE s Database of State Incentives for Renewable Energy (DSIRE) at dsireusa.org to find out just what is in store for you!

15 boschheatingandcooling.com 14 Bosch Complete System Solutions Bosch Greentherm Tankless Water Heaters Whether you are building your dream home or simply remodeling your current home, there s a Bosch tankless water heater designed to provide you with a virtually endless supply of hot water while reducing your current water heating bill. Bosch Greenstar Boilers Engineered to offer the ideal solution for those who want to meet their heating and hot water needs in one compact unit to save space and money on monthly utility bills. Floor-standing or wall-mounted units are available in heat-only or combi-models. Bosch Control The Bosch Control is an internet-connected programmable controller for space heating and hot water production which can be operated using a compatible smart device. The control s innovative programming enables it to have an intelligent conversation with the boiler and take advantage of advanced features such as zoning control, home entrance detection or self learning plus the choice of load or weather compensation to optimize efficiency and comfort. Bosch Greensource Heat Pumps Bosch Geothermal Systems bring your home in harmony with nature, while providing the unmatched energy efficiency at a price that can t be beat. Our geothermal systems work in concert with the stable earth temperatures to provide heating in the winter, and cooling in the summer. Zero Energy Capable Home: A Peace-of-Mind Solution The Bosch zero energy capable home is a systems approach to creating a house that is not an energy drain on the planet s finite resources. Its technology helps homeowners to reduce their monthly utility bills and protect the environment. Bosch Thermotechnology has assembled a comprehensive suite of heating, cooling, and water heating technologies which can combine with Bosch energy-efficient appliances and third-party energy generating solar technology for your benefit. When installed in a home, these products reduce the homes energy usage due to intelligent product designs and higher efficiencies. In addition, this approach enables the home owner to generate enough power to offset the already reduced energy demand, meaning little to no energy bill!

16 15 Residential Geothermal Heat Pumps Bosch Thermotechnology Corp. 555 NW 65th Court Fort Lauderdale, FL General Inquiries: Contractor Technical Support: boschheatingandcooling.com Scan the QR code to the right to access product information. Copyright 2016 Bosch Thermotechnology Corp. All rights reserved. Subject to change without notice. 76H993181A 3-16 ENERGY STAR PARTNER