Tankless Water Heaters

Tankless water heaters provide continuous and uninterrupted hot water for multiple household demands at the same time. A tankless water heater comes available in electric or gas configurations suited to your exact needs and specifications.

According to the EPA, water heating ranks as the 3rd largest household energy expense and may reach as much as 25% of the energy consumed in your household. Depending on usage, a household could save up to $384 yearly by using a tankless water heater,

Tankless Water Heater Benefits:

  • Energy savings
  • Convenience
  • Increased Space
  • Reliability

Westside Wholesale caries the finest names in residential tankless water heaters from Rheem Tankless, Bosch, Eemaz, Norritz, Stiebel Eltron, and Wiseman. Browse ankless water heater prices, read reviews, and order online securely. Maxmize savings with our buyer rewards program. The Rheem Tankless Water Heater and Bosch Tankless Water Heater lines are some of the most popular.

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Stiebel Eltron TEMPRA 36 PLUS

Stiebel Eltron TEMPRA 36 PLUS

Stiebel Eltron Tankless Water Heater, 208/240V 132/150A Electric Tempra Plus Whole House - Indoor, 4.5 GPM

Our Price: $849.00
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Eemax EX95

Eemax EX95

Eemax Tankless Water Heater, 240V 40A Electric Closed Outlet Flow Single-Point w/ Bottom Feed - Indoor

Our Price: $215.45
as low as: $200.37

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Bosch Therm 940 ES LP

Bosch Therm 940 ES LP

Bosch Tankless Water Heater, Liquid Propane 199,000 BTU Max Non-Condensing Whole House - Indoor, 9.4 GPM

Our Price: $1,099.99
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Eemax EX65T

Eemax EX65T

Eemax Tankless Water Heater, 240V 27A Electric Thermostatic Single-Point w/ Bottom Feed - Indoor

Our Price: $278.66
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Stiebel Eltron TEMPRA 24 PLUS

Stiebel Eltron TEMPRA 24 PLUS

Stiebel Eltron Tankless Water Heater, 208/240V 88/100A Electric Tempra Plus Whole House - Indoor, 4.5 GPM

Our Price: $749.00
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Eemax SS029240T2T

Eemax SS029240T2T

Eemax Tankless Water Heater, 240V 120A Electric Whole House HomeAdvantage in Stainless Steel - Indoor, 4 GPM

Our Price: $838.01
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Eemax SS023240TC

Eemax SS023240TC

Eemax Tankless Water Heater, 240V 93A Electric Whole House HomeAdvantage in Stainless Steel - Indoor, 4 GPM

Our Price: $671.74
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Stiebel Eltron TEMPRA 29 PLUS

Stiebel Eltron TEMPRA 29 PLUS

Stiebel Eltron Tankless Water Heater, 120A Electric Whole House - 4.5 GPM

Our Price: $799.00
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Bosch GWHC800ESLP

Bosch GWHC800ESLP

Bosch ProTankless Propane Tankless Water Heater, Indoor/Outdoor

List Price: $1,850.00
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Eemax SP4208

Eemax SP4208

Eemax Tankless Water Heater, 208V 19.7A Electric Single-Point w/ Top Feed - Indoor

Our Price: $219.41
as low as: $204.05

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Wiseman EC05

Wiseman EC05

Wiseman Everclens Tankless Water Heater Descaling Solution

Regular Price: $22.99
On Sale: $16.30
as low as: $15.16

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Bosch AQ3ES

Bosch AQ3ES

Bosch Tankless Water Heater 3" Horizontal Vent Kit w/ Air Intake

Our Price: $229.99
as low as: $213.89

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Rheem RTG20211

Rheem RTG20211

Rheem Tankless Water Heater 3" x 5" Direct Vent Vertical Termination Kit for RTG-64DV, RTG-84DV, & RTG-95DV

Our Price: $145.99
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Rheem RTG20006DW

Rheem RTG20006DW

Rheem Digital Remote Control Thermostat, UMC-117

Our Price: $81.60
as low as: $75.89

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Rheem RTG20151D-1

Rheem RTG20151D-1

Rheem Tankless Water Heater 36" Straight Pipe (Vent Length)

Regular Price: $73.99
On Sale: $52.20
as low as: $48.55

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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.