Tankless Water Heaters

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Noritz DT5

Noritz DT5

Noritz Stainless Steel 5" Diameter Venting Horizontal Drain Tee, For NC380 Series Water Heaters

Regular Price: $25.99
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Noritz ARF5

Noritz ARF5

Noritz Stainless Steel 5" Diameter Venting Angled Roof Flashing, For NC380 Series Water Heaters

Regular Price: $50.99
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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

Regular Price: $75.99
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Noritz VP4-12STRAIGHT

Noritz VP4-12STRAIGHT

Noritz Stainless Steel 4" Diameter Venting Rigid Straight Vent Pipe, 12" Length - For NR71, NR98, NR111, NR199, NC250 & NH Series

Regular Price: $21.99
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Noritz SCR4

Noritz SCR4

Noritz Stainless Steel 4" Diameter Venting Storm Collar, For NR71, NR98, NR111, NR199, NC250 & NH Series

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Noritz SC4

Noritz SC4

Noritz Stainless Steel 4" Diameter Venting Support Clamp, 5 Pack - For NR71, NR98, NR111, NR199, NC250 & NH Series

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Noritz RJ4

Noritz RJ4

Noritz Stainless Steel 4" Diameter Venting Roof Jack, For NR71, NR98, NR111, NR199, NC250 & NH Series

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Noritz QC-1

Noritz QC-1

Noritz Tankless Water Heater Quick Connect Cord, Compatible With All Models Except NRC98-DV and NR83-DVC

Our Price: $18.99
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Eemax EX380T4

Eemax EX380T4

Eemax Tankless Water Heater, 240V 160A Electric Series 4 Commercial - Indoor, 6 GPM

Our Price: $940.89
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Eemax EX280T3

Eemax EX280T3

Eemax Tankless Water Heater, 240V 120A Electric Series 3 Commercial - Indoor, 4 GPM

Our Price: $744.40
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Eemax PA019240TC

Eemax PA019240TC

Eemax Tankless Water Heater, 240V 80A Electric Whole House ProAdvantage Series - Indoor, 3 GPM

Our Price: $722.76
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Rheem RTG20145

Rheem RTG20145

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

Regular Price: $85.99
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Rheem RTG2006EL

Rheem RTG2006EL

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

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Rheem RTG2006EJ

Rheem RTG2006EJ

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

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Rheem MIC-K-65

Rheem MIC-K-65

Rheem Tankless Water Heater 65 Ft. Communication Cable

Regular Price: $45.99
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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 calling 1-877-998-9378.