Bosch Tankless Water Heaters

Bosch tankless water heaters provide a near-limitless supply of hot water in compact, easy-to-install models. Available in gas or electric-powered versions, Bosch tankless water heaters can be rigged to work with single fixtures or to heat water for the whole home. They're effective for spaces that can't traditionally host a hot water outlet and many are suitable to replace traditional water heaters.

Westside Wholesale stocks electric, natural gas and propane tankless water heaters from Bosch, as well as additional installation supplies like remote controls and kits to maintain the efficiency of your systems. Every model offers incredible energy efficiency and are able to provide a reduction of up to 50% in monthly utility bills when compared to conventional tanks that waste energy heating water constantly and have uneconomical sediment build up. No matter which Bosch tankless water heater you choose, you'll have decades of use in your home additions, small office, cabins, back houses and any other location they are installed.

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Bosch 7736500074

Bosch 7736500074

Bosch Tankless Water Heater High Temperature Kit for 830 ES to 1050 ES Models

Our Price: $16.99
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Bosch TLINK

Bosch TLINK

Bosch Tankless Water Heater Intelligent Link Cascading Kit (7709003962)

Our Price: $21.99
as low as: $20.45

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Bosch 7736501132

Bosch 7736501132

Bosch Tankless Water Heater 90 Degree Elbow 6" Diameter for Therm/Greentherm PP Common Venting System

Our Price: $27.99
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Bosch 7736501146

Bosch 7736501146

Bosch Tankless Water Heater 45 Degree Elbow 6" Diameter for Therm/Greentherm PP Common Venting System

Our Price: $30.99
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Bosch 7736501137

Bosch 7736501137

Bosch Tankless Water Heater 20" Extension Pipe 6" Diameter for Therm/Greentherm PP Common Venting System

Our Price: $33.99
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Bosch 7709003574

Bosch 7709003574

Bosch Tankless Water Heater Indoor Freeze Protection Kit for 2400 ES

Our Price: $46.99
as low as: $43.70

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Bosch 7736501135

Bosch 7736501135

Bosch Tankless Water Heater 40" Extension Pipe 6" Diameter for Therm/Greentherm PP Common Venting System

Our Price: $51.99
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Bosch 7709003775

Bosch 7709003775

Bosch Tankless Water Heater Indoor Freeze Protection Kit for 330 PN, 520 HM, & 520 PN

Our Price: $53.99
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Bosch 7709003913

Bosch 7709003913

Bosch Tankless Water Heater Outdoor Kit for Therm Models: C 1210 ES, C 1050 ES, C 950 ES, 940 ES, 830 ES

Regular Price: $123.99
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as low as: $82.21

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Bosch 7736501133

Bosch 7736501133

Bosch Tankless Water Heater 80" Extension Pipe 6" Diameter for Therm/Greentherm PP Common Venting System

Our Price: $89.99
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Bosch 196006

Bosch 196006

Bosch Tankless Water Heater Concentric Vent Terminal 3/5" PVC

Our Price: $93.99
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Bosch PTOK

Bosch PTOK

Bosch Tankless Water Heater Outdoor Freeze Protection Kit (7709003913)

Regular Price: $143.99
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as low as: $108.16

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Bosch 196016

Bosch 196016

Bosch Tankless Water Heater Concentric Vent Terminal 3/6" PVC

Our Price: $117.99
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Bosch 7738003210

Bosch 7738003210

Bosch Tankless Water Heater Horizontal Up and Out Vent Kit Concentric 80/125 PP for C 1050 ES & C 950 ES

Our Price: $121.99
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Bosch ESHCK

Bosch ESHCK

Bosch Tankless Water Heater Concentric Vent Kit 3/5" Stainless Steel

Our Price: $124.99
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How to Select

How to Select a Tankless Water Heater

The most important factor when deciding which tankless water heater to purchase is based on the number of fixtures you need to get heated water to and the amount of water to heat. It is not uncommon for a homeowner to purchase the tankless unit that seems correct for their application to find that they miscalculated. We always recommend purchasing a tankless unit with redundancy in output; therefore you will never have an issue with lack of hot water.  Most ratings from the manufacturer do not take into account your unique plumbing situation, so consulting a professional is recommended.

Tankless Water Heater Considerations:

  1. Power Type: Electrical, Natural Gas, Liquid Propane. Depending on your house utility configuration, you can connect a tankless unit to any of the following power sources, however, you must consider that an electrical tankless unit will not work in Natural gas applications or Propane, and vice versa.
  2. For Electric Tankless Heating Units, your amperage and voltage are very important. Your breaker size may be too small, or may need to be upgraded to accommodate the new heater. If this is the case, upgrade to a breaker that will have some redundancy in power rating.
    (For example, if your tankless heating unit requires a 40 Amp breaker, we recommend installing a 50 Amp just in case.)
  3. How far your tankless heating unit will be installed from your fixtures. If your heater is too far from your shower, or faucets, they will either get a reduced flow of water, or a lack of heat. This is caused by the added traveling distance the water must travel through your pipes.  If this is a concern for you, consult our staff for expert advice, or consult the installer for recommendations.
  4. Whole house or Point of Use. Point of use tankless units only operates with a single fixture at the point of use. Some point of use models can work with extension kits to expand usage to multiple fixtures. Whereas whole house tankless units are designed for larger volumes and will provide heated water to all fixtures in your household. Once again, it is important to take redundancy into account with Whole house heaters to make sure each fixture has steady, warm flow.

For additional assistance, or for expert advice, contact our Customer Service Department through Live Chat or by telephoning 1 (877) 998-9378.