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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 ES4 is the Number 1 Seller
Learn More About ES4
Bosch ES4 - 4.0 Gal. - 120V / 1 Ph Mini Tank Water Heater
Model: ES4
40% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Q&A (1)
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$155.00
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$175.00
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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
13% 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 5 In-Stock
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Model Number T9900 SE 199 is the Number 3 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.
8% 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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$1,499.00
Only 5 In-Stock
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Model Number T9900I SE 199 is the Number 4 Seller
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.
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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$1,675.00
Only 4 In-Stock
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Model Number ZBR28-3 is the Number 5 Seller
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.
3% 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
Factory-Direct
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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
3% 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
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
3% 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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$1,065.00
In-Stock
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Learn More About 7736504944
Bosch Water Wi-Fi Module
Model: 7736504944
3% 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
Only 2 In-Stock
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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
2% 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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Model US12 is a Closeout
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$135.00
Was 
$179.00
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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 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.
2% 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
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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.
2% 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
Closeout
$135.00
Was 
$159.00
SAVE $24.00
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Learn More About ZWB35-3
Model ZWB35-3 is a Recommended Product
Bosch Greenstar Combi 131 - ZBW35 - 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 ZWB42-3
Model ZWB42-3 is a Recommended Product
Bosch Greenstar Combi 151 - ZBW42 - 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.
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 (2)
$3,349.00
Only 2 In-Stock
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Learn More About ES8
Bosch ES8 - 7.0 Gal. - 120V / 1 Ph Mini Tank Water Heater
Model: ES8
2% 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
Closeout
$199.00
Was 
$225.00
SAVE $26.00
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Learn More About ZWB28-3
Model ZWB28-3 is a Recommended Product
Bosch Greenstar Combi 100 - ZBW28 - 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
Factory-Direct
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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)
$2,149.00
Was 
$2,299.00
SAVE $150.00
Only 2 In-Stock
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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
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)
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$1,289.00
Only 2 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
1% Buy This
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$119.00
Was 
$149.00
SAVE $30.00
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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
Closeout
$135.00
Was 
$159.00
SAVE $24.00
Only 4 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.
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 2 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.
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 1 In-Stock
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2% Check Discount
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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
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Ask a Question
$1,209.00
Only 5 In-Stock
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2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
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.
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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