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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Eemax SP4277

Eemax SP4277

Eemax Tankless Water Heater, 277V 14.8A Electric Single-Point w/ Top Feed - Indoor

Our Price: $219.41
as low as: $204.05

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Noritz H2F-C

Noritz H2F-C

Noritz H2FLOW Anti-Scale Replacement Filter

Our Price: $315.24
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Eemax EX48

Eemax EX48

Eemax Tankless Water Heater, 240V 20A Electric Closed Outlet Flow Single-Point w/ Bottom Feed - Indoor

Our Price: $215.45
as low as: $200.37

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Eemax SP35

Eemax SP35

Eemax Tankless Water Heater, 240V 14.6A Electric Single-Point w/ Top Feed - Indoor

Our Price: $215.45
as low as: $200.37

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Eemax SP3512

Eemax SP3512

Eemax Electric Tankless Water Heater, 120V 30A Single-Point Hand Washing

Our Price: $215.45
as low as: $200.37

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Noritz VP4-48STRAIGHT

Noritz VP4-48STRAIGHT

Noritz Stainless Steel 4" Diameter Venting Rigid Straight Vent Pipe, 48" Length - For NR71, NR98, NR111, NR199, NC250 & NH Series

Our Price: $46.25
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Noritz VP5-45ELBOW

Noritz VP5-45ELBOW

Noritz Stainless Steel 5" Diameter Venting 45 Degree Elbow, For NC380 Series

Our Price: $35.23
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Eemax SP55

Eemax SP55

Eemax Tankless Water Heater, 240V 23A Electric Single-Point w/ Top Feed - Indoor

Our Price: $215.45
as low as: $200.37

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Stiebel Eltron DHC 4-2

Stiebel Eltron DHC 4-2

Stiebel Eltron Tankless Water Heater, 208/240V 14/16A Electric Single-Point - Indoor

Our Price: $179.00
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Stiebel Eltron DHC 4-3

Stiebel Eltron DHC 4-3

Stiebel Eltron Tankless Water Heater, 277V 17A Electric Single-Point - Indoor

Our Price: $179.00
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Stiebel Eltron DHC 5-2

Stiebel Eltron DHC 5-2

Stiebel Eltron Tankless Water Heater, 208/240V 18/20A Electric Single-Point - Indoor

Our Price: $179.00
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Rheem RTG20040

Rheem RTG20040

Rheem Tankless Water Heater EZ Link Cable

Our Price: $26.99
as low as: $25.10

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Rheem RTG20006DU

Rheem RTG20006DU

Rheem Tankless Water Heater Digital Remote Control Thermostat

Our Price: $75.99
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Rheem RTG20145

Rheem RTG20145

Rheem Tankless Water Heater 3" Metal Fab Appliance Adapter for RTG-53PV & RTG2-42PV

Our Price: $59.07
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Rheem RTG20185

Rheem RTG20185

Rheem Tankless Water Heater 4" Vertical Termination Vent Kit for RTG-74PV & GT-199PV

Our Price: $173.99
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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.