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Tankless Water Heaters

About Tankless Heating Units and Accessories

Westside Wholesale offers a wide array of tankless heating products that would suit your home’s or business’ needs. With such a vast selection, you have the ability to keep the hot water running without burning a hole into your pocket. Westside Wholesale offers you the great prices and high quality products that you and your home deserve. With new technology that makes it possible to save space, power, and money, there are many configurations that can be fitted to your needs.

Tankless heating units for sale include the Bosch 240V, 40A Powerstream Pro Electric Point-of-use Tankless Water Heater, Eemax 120V 29A Single Point Electric Tankless Water Heater, Rheem Indoor Tankless Water Heater for 2-3 Bathroom Homes, and Bosch Indoor Tankless Water Heater with Hydro-Generated Ignition.

The tankless water heaters offered by Westside Wholesale operate at high levels of BTUs and some are suitable for usage in high elevations without the addition of a modification chip. Our water heaters allow you to heat your water supply in either 1=room or multi-room applications. For ease of installation and a vast array of resources, Westside Wholesale offers a range of tankless installation supplies including the Rheem Pressure Valve, Bosch 3” Horizontal Vent Kit w/ Air Intake, Rheem Horizontal Vent Kit for RTG-53DV series and etc.

The brands we offer at Westside Wholesale are: Eemax, Stiebel Eltron, Bosch, and Rheem. We have worked hard to bring you the best prices and highest quality of products, with always the thought of the consumer in mind. The configurations offered by these companies are voltages of 120V, 240V, 208V, and 277V. These tankless water heaters can be installed in configurations of indoor, outdoor and both indoor/outdoor. Some of our products also have the ability to convert via a conversion chip to commercial grade usage, without costly repercussions. There are three energy sources that can power your water heaters based on your preference: electric, propane gas, and natural gas. Whether the water heaters are used for a single point, or the whole house, Westside Wholesale is sure to offer the best brands at the best prices.

106-120 of 182 products Sort by 

Eemax PA010240T

Eemax PA010240T

Eemax Tankless Water Heater, 240V 40A Electric Whole House ProAdvantage Series - Indoor, 2.5 GPM

Our Price: $457.54
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Stiebel Eltron DHC 3-2

Stiebel Eltron DHC 3-2

Stiebel Eltron Tankless Water Heater, 208/240V 12/14A Electric Single-Point - Indoor

Our Price: $179.00
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Bosch Greentherm C 950 ES LP

Bosch Greentherm C 950 ES LP

Bosch Tankless Water Heater, Liquid Propane 175,000 BTU Max Condensing Whole House - Indoor or Outdoor, 9.2 GPM

Our Price: $1,294.95
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Bosch Greentherm C 950 ES NG

Bosch Greentherm C 950 ES NG

Bosch Tankless Water Heater, Natural Gas 175,000 BTU Max Condensing Whole House - Indoor or Outdoor, 9.2 GPM

Our Price: $1,294.95
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Eemax EX2412

Eemax EX2412

Eemax Tankless Water Heater, 120V 20A Electric - Indoor

Our Price: $215.45
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Rheem RTG20214D

Rheem RTG20214D

Rheem Tankless Water Heater Liquid Propane Commercial Conversion Program Chip for RTG-84XP

Our Price: $25.99
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Rheem RTG20040

Rheem RTG20040

Rheem Tankless Water Heater EZ Link Cable

Our Price: $19.99
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Rheem RTG-95DVLN

Rheem RTG-95DVLN

Rheem Tankless Water Heater, Natural Gas 199,000 BTU Max Direct Vent Whole House Residential/Commercial - Indoor, 9.5 GPM

Our Price: $1,099.95
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Rheem RTG20185

Rheem RTG20185

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

Our Price: $174.99
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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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Bosch Tronic 3000 US3

Bosch Tronic 3000 US3

Bosch Tankless Water Heater, 120V 29A Electric Point-of-Use (Powerstream Pro RP3P) - Indoor

Our Price: $199.99
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Bosch 7709003574

Bosch 7709003574

Bosch Tankless Water Heater Indoor Freeze Protection Kit for 2400 ES

Our Price: $44.99
as low as: $40.49

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Bosch PTOK

Bosch PTOK

Bosch Tankless Water Heater Outdoor Freeze Protection Kit

Our Price: $143.99
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Eemax EX48T-ML

Eemax EX48T-ML

Eemax Tankless Water Heater, 240V 20A Electric Thermostatic Single-Point Multiple Lavatory w/ Bottom Feed - Indoor

Our Price: $292.63
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Rheem RTG-84XLP

Rheem RTG-84XLP

Rheem Tankless Water Heater, Liquid Propane 199,000 BTU Max Direct Vent Whole House Residential/Commercial - Outdoor, 8.4 GPM

Our Price: $849.99
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106-120 of 182 products Sort by 

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.

Before you pick out your tankless heating unit, you will want to check the following:

  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 calling 1-877-998-9378.