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 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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Eemax PA014240TC

Eemax PA014240TC

Eemax Tankless Water Heater, 240V 64A Electric Whole House ProAdvantage Series - Indoor, 3 GPM

Our Price: $690.80
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Stiebel Eltron 540444

Stiebel Eltron 540444

Stiebel Eltron Tankless Water Heater Isolation Valve Kit w/3 Valves - Lead-Free Brass

Our Price: $121.99
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Stiebel Eltron TEMPRA 15 B

Stiebel Eltron TEMPRA 15 B

Stiebel Eltron Tankless Water Heater, 208/240V 52/60A Electric Tempra Whole House - Indoor, 3 GPM

Our Price: $549.00
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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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Eemax PA008277T

Eemax PA008277T

Eemax Tankless Water Heater, 277V 40A 2.5 GPM Electric Whole House ProAdvantage Series - Indoor

Our Price: $462.84
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Eemax PA012240T

Eemax PA012240T

Eemax Tankless Water Heater, 240V 48A Electric Whole House ProAdvantage Series - Indoor, 2.5 GPM

Our Price: $446.36
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Stiebel Eltron 581332

Stiebel Eltron 581332

Stiebel Eltron Tankless Water Heater House Pure Scale & Sediment Replacement Filter

Our Price: $62.99
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Rheem RTG-20149C

Rheem RTG-20149C

Rheem Tankless Water Heater 3" Single 90 Degree Elbow for Wall Venting

Our Price: $36.50
as low as: $33.95

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Rheem RTG20236A

Rheem RTG20236A

Rheem Tankless Water Heater Natural Gas Commercial Conversion Program Chip for RTG-95DVN

Our Price: $25.99
as low as: $24.17

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Bosch 196016

Bosch 196016

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

Our Price: $117.99
as low as: $109.73

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Stiebel Eltron Mini 2

Stiebel Eltron Mini 2

Stiebel Eltron Tankless Water Heater, 120V 20A Single Point - Indoor

Our Price: $159.00
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Wiseman EFSM1LT

Wiseman EFSM1LT

Wiseman Everfree Drain Opener and Descaler, Small 1 Liter

Our Price: $11.34
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Rheem RTG20006DN-1

Rheem RTG20006DN-1

Rheem Tankless Water Heater High Altitude Chip for RTG-74PVN - Natural Gas (6561-9840 Ft.)

Our Price: $27.99
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Rheem RTG20006DL-1

Rheem RTG20006DL-1

Rheem Tankless Water Heater High Altitude Chip for RTG-74PVP - Liquid Propane (6561-9840 Ft.)

Our Price: $27.99
as low as: $26.03

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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.