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. The company was founded in Stuttgart, Germany, in 1886 and today has more than 300 subsidiaries in over 150 countries.
Environmental stewardship inspires and drives Bosch product development. Today, Bosch is a leader in the development of next-generation technologies that deliver improved performance and efficiency while conserving our natural resources. In the area of sustainable mobility, we’re helping reduce the fuel consumption and CO2 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, heat pump electric water heaters, photovoltaics, wind power, and geothermal systems are perhaps the best examples of smart technologies growing in demand and shaping the future of Bosch.Â
The Bosch green star boiler represents today’s best efficiency technologies brought together in a single package. Astounding efficiency ratings can be achieved with the use of Bosch’s condensing technology, squeezing every last BTU out of your home’s gas supply. An included 3-speed Grundfos pump and a wide variety of pipe venting options allow the boiler to be installed in nearly any home imaginable. This boiler includes a domestic hot water coil, allowing the boiler to act as a tankless hot water heater as well as a hydronic boiler.
Condensing Technology Improves Efficiency
- The ZWB28-3 is a condensing boiler, using the leftover energy in the boiler’s flue exhaust to further heat your home. Keep your home warmer for less energy cost!
Included DHW Coil
- This Bosch greenstar boiler contains an internal domestic hot water coil. This allows the boiler to function as a tankless hot water heater as well as a hydronic water boiler.
Fully Modulating Fan
- The boiler includes a fully modulating fan to control the boiler’s burning rate, allowing optimum efficiency to be achieved during a wide variety of outdoor conditions.
Small Size and Low Installation Clearances
- Low installation clearances on all sides, wall mounting configuration, and small footprint translate into a boiler that can be installed almost anywhere.
SPECIFICATION
- ModelZWB28
- Fuel TypeNatural Gas
- Combustion TypeCondensing
- Vent TypeDirect Vent
- Modulating/StagingModulating
- Mount TypeWall
- Minimum Altitude0 Feet
- Maximum Altitude4500 Feet
- Includes PumpYes
- AFUE95%
- Maximum Input Capacity100800 BTU
- Minimum Input Capacity34600 BTU
- DOE Heating Capacity89400 BTU
- Net I=B=R Capacity79000 BTU
- Ultra Low NOx EmissionsYes
- Turndown Ratio5:1
- Phase1
- Frequency60 Hz
- Flue Connection Size3 Inches
- Gas Connection Size3/4 Inch
- Cold Water Inlet3/4 Inch
- Hot Water Outlet3/4 Inch
- Supply Connection1 Inch
- Return Connection1 Inch
- Product Height33 1/2 Inches
- Product Width17 19/48 Inches
- Product Depth13 43/48 Inches
- Product Weight110.2 Pounds
- Shipping Weight118 Pounds
- CSA ListedYes
- ASME CertifiedYes
- AHRI CertifiedYes
- AHRI Reference Number4444522
The Bosch greenstar boiler represents today’s best efficiency technologies brought together in a single package. Astounding efficiency ratings can be achieved with the use of Bosch’s condensing technology, squeezing every last BTU out of your home’s gas supply. An included 3-speed Grundfos pump and a wide variety of pipe venting options allow the boiler to be installed in nearly any home imaginable. This boiler includes a domestic hot water coil, allowing the boiler to act as a tankless hot water heater as well as a hydronic boiler.
Condensing Technology Improves Efficiency
- The ZWB42-3 is a condensing boiler, using the leftover energy in the boiler’s flue exhaust to further heat your home. Keep your home warmer for less energy cost!
Included DHW Coil
- This Bosch greenstar boiler contains an internal domestic hot water coil. This allows the boiler to function as a tankless hot water heater as well as a hydronic water boiler.
Fully Modulating Fan
- The boiler includes a fully modulating fan to control the boiler’s burning rate, allowing optimum efficiency to be achieved during a wide variety of outdoor conditions.
Small Size and Low Installation Clearances
- Low installation clearances on all sides, wall mounting configuration, and small footprint translate into a boiler that can be installed almost anywhere.
SPECIFICATION
- ModelZWB42
- Fuel TypeNatural Gas
- Combustion TypeCondensing
- Vent TypeDirect Vent
- Modulating/StagingModulating
- Mount TypeWall
- Minimum Altitude0 Feet
- Maximum Altitude4500 Feet
- Includes PumpYes
- AFUE95%
- Maximum Input Capacity151600 BTU
- Minimum Input Capacity36000 BTU
- DOE Heating Capacity134400 BTU
- Net I=B=R Capacity117000 BTU
- Ultra Low NOx EmissionsYes
- Turndown Ratio5:1
- Phase1
- Frequency60 Hz
- Flue Connection Size3 Inches
- Gas Connection Size3/4 Inch
- Cold Water Inlet3/4 Inch
- Hot Water Outlet3/4 Inch
- Supply Connection1 Inch
- Return Connection1 Inch
- Product Height33 1/2 Inches
- Product Width17 19/48 Inches
- Product Depth13 43/48 Inches
- Product Weight110.2 Pounds
- Shipping Weight118 Pounds
- CSA ListedYes
- ASME CertifiedYes
- AHRI CertifiedYes
$99
