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Bosch is a leader in the development of next-generation green technologies delivering reliable performance and efficiency. From on-demand tankless water heaters to high-performance boilers, Bosch provides comfort you can count on.
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Model Number US12 is the Number 1 Seller
Learn More About US12
Bosch US12 - 1.4 GPM at 60° F Rise - 0.99 UEF - 208-240V / 1 Ph Tankless Point of Use Water Heater
Model: US12
Under-sink design. Ratings: 2.1 GPM at 40
22% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(8)
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$135.00
Was 
$179.00
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Model Number T9800 SE 199 is the Number 2 Seller
Learn More About T9800 SE 199
Bosch Greentherm - 6.7 GPM at 60° F Rise - 0.96 UEF - Gas Tankless Water Heater - Direct Vent
Model: T9800 SE 199
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 10.0 GPM at 40
16% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$1,219.00
Only 4 In-Stock
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Model Number ES8 is the Number 3 Seller
Learn More About ES8
Bosch ES8 - 7.0 Gal. - 120V / 1 Ph Mini Tank Water Heater
Model: ES8
9% Buy This
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5(2)
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Model ES8 is a Closeout
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$199.00
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$225.00
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Model Number T9900 SE 199 is the Number 4 Seller
Learn More About T9900 SE 199
Bosch T9900 SE 199 - 6.8 GPM at 60° F Rise - 0.96 UEF - Gas Tankless Water Heater - Direct Vent
Model: T9900 SE 199
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. (SCAQMD Rule 1146.2 Compliant). (< 40 ng/J or 55 PPM). Ratings: 11.2 GPM at 35° F Rise, 8.7 GPM at 45° F Rise, 7.2 GPM at 55° F Rise, 5.2 GPM at 75° F Rise. 199k Effective BTU/h.
6% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$1,489.00
Only 3 In-Stock
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Model Number ZWB42-3 is the Number 5 Seller
Learn More About ZWB42-3
Model ZWB42-3 is a Recommended Product
Bosch Greenstar Combi 151 - ZWB42 - 134K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Model: ZWB42-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 152K BTU Gross Input, 134K BTU DOE Capacity, 117K BTU Net IBR Capacity. Includes Circulator.
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(5)
Q&A (2)
$3,349.00
Only 4 In-Stock
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Learn More About T9800 SEO 199
Bosch Greentherm - 6.7 GPM at 60° F Rise - 0.96 UEF - Gas Tankless Water Heater - Outdoor
Model: T9800 SEO 199
EnergyStar Condensing Water Heater. Low NOx Emissions. Ratings: 10.0 GPM at 40
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$1,129.00
Only 2 In-Stock
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Learn More About 7736504944
Bosch Water Wi-Fi Module
Model: 7736504944
5% Buy This
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5(1)
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$99.00
Factory-Direct
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Learn More About US9
Bosch US9 - 1.1 GPM at 60° F Rise - 0.97 UEF - 208-240V / 1 Ph Tankless Point of Use Water Heater
Model: US9
Under-sink design. Ratings: 1.7 GPM at 40° F Rise, 1.3 GPM at 50° F Rise, 1.1 GPM at 60° F Rise, 1 GPM at 70° F Rise.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
Q&A (1)
Model US9 is a Closeout
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$135.00
Was 
$159.00
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Learn More About ZBR28-3
Bosch Greenstar 100 - ZBR28 - 89K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR28-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 101K BTU Gross Input, 89K BTU DOE Capacity, 79K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (3)
$2,459.00
Only 1 In-Stock
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Learn More About ZBR42-3
Bosch Greenstar 151 - ZBR42 - 134K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR42-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 152K BTU Gross Input, 134K BTU DOE Capacity, 117K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$3,449.00
Only 2 In-Stock
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Learn More About T9800 SE 160
Bosch Greentherm - 5.4 GPM at 60° F Rise - 0.97 UEF - Gas Tankless Water Heater - Direct Vent
Model: T9800 SE 160
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions (SCAQMD Rule 1146.2 Compliant). Ratings: 8.0 GPM at 40
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$1,089.00
Factory-Direct
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Learn More About T9900 SE 160
Bosch T9900 SE 160 - 5.5 GPM at 60° F Rise - 0.97 UEF - Gas Tankless Water Heater - Direct Vent
Model: T9900 SE 160
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$1,279.00
Only 2 In-Stock
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Learn More About US3
Bosch US3 - 0.6 GPM at 40° F Rise - 0.95 UEF - 110-120V / 1 Ph Tankless Point of Use Water Heater
Model: US3
Under-sink design. Ratings: 0.6 GPM at 40
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(7)
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Model US3 is a Closeout
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$135.00
Was 
$155.00
SAVE $20.00
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Learn More About ZWB35-3
Model ZWB35-3 is a Recommended Product
Bosch Greenstar Combi 131 - ZWB35 - 117K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Model: ZWB35-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 132K BTU Gross Input, 117K BTU DOE Capacity, 103K BTU Net IBR Capacity. Includes Circulator.
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(5)
Q&A (1)
$3,299.00
Only 2 In-Stock
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Learn More About T9900I SE 199
Bosch T9900i SE 199 - 6.8 GPM at 60° F Rise - 0.96 UEF - Gas Tankless Water Heater - Direct Vent
Model: T9900I SE 199
EnergyStar Condensing Water Heater. Ultra Low NOx Emissions. (SCAQMD Rule 1146.2 Compliant). (< 40 ng/J or 55 PPM). Ratings: 11.2 GPM at 35° F Rise, 8.7 GPM at 45° F Rise, 7.2 GPM at 55° F Rise, 5.2 GPM at 75° F Rise. 199k Effective BTU/h.
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$1,649.00
Only 4 In-Stock
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Learn More About US7
Bosch US7 - 0.8 GPM at 60° F Rise - 0.98 UEF - 208-240V / 1 Ph Tankless Point of Use Water Heater
Model: US7
Under-sink design. Ratings: 1.3 GPM at 40° F Rise, 1 GPM at 50° F Rise, 0.8 GPM at 60° F Rise, 0.8 GPM at 70° F Rise.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
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Model US7 is a Closeout
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$135.00
Was 
$159.00
SAVE $24.00
Only 1 In-Stock
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Learn More About ZWB28-3
Model ZWB28-3 is a Recommended Product
Bosch Greenstar Combi 100 - ZWB28 - 89K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Model: ZWB28-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 101K BTU Gross Input, 89K BTU DOE Capacity, 79K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(5)
Q&A (3)
$3,049.00
Only 1 In-Stock
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Learn More About ZBR16-3
Bosch Greenstar 57 - ZBR16 - 51K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR16-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 57K BTU Gross Input, 51K BTU DOE Capacity, 45K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
Q&A (3)
$2,349.00
Only 2 In-Stock
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Learn More About ZBR21-3
Bosch Greenstar 79 - ZBR21 - 71K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR21-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 79K BTU Gross Input, 71K BTU DOE Capacity, 62K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$2,399.00
Only 1 In-Stock
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Learn More About ZBR35-3
Bosch Greenstar 131 - ZBR35 - 117K BTU - 95.0% AFUE - Hot Water Gas Boiler - Direct Vent
Model: ZBR35-3
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 132K BTU Gross Input, 117K BTU DOE Capacity, 103K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (3)
$3,319.00
Factory-Direct
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Learn More About US6
Bosch US6 - 0.7 GPM at 60° F Rise - 0.97 UEF - 277V / 1 Ph Tankless Point of Use Water Heater
Model: US6
Under-sink design. Ratings: 1.1 GPM at 40° F Rise, 0.8 GPM at 50° F Rise, 0.7 GPM at 60° F Rise, 0.6 GPM at 70° F Rise.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(6)
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Model US6 is a Closeout
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$135.00
Was 
$159.00
SAVE $24.00
Only 4 In-Stock
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Learn More About T9800 SEO 160
Bosch Greentherm - 5.4 GPM at 60° F Rise - 0.97 UEF - Gas Tankless Water Heater - Outdoor
Model: T9800 SEO 160
EnergyStar Condensing Water Heater. Low NOx Emissions. Ratings: 8.0 GPM at 40
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Ask a Question
$999.00
Was 
$1,074.00
SAVE $75.00
In-Stock
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Learn More About 7738003210
Bosch Up and Out Concentric Vent Kit for Greentherm Water Heaters
Model: 7738003210
FOR BOSCH GREENTHERM C950ES, C1050ES TANKLESS WATER HEATERS
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$119.00
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$149.00
SAVE $30.00
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