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Simple, straightforward and low shipping rates for these tankless water heaters


Tankless Water Heaters Index Listing


You won't find a better selection of tankless water heaters anywhere on the Internet. Let PlumbingSupply.com® be your source for tankless water heaters and thousands of other plumbing-related products!

GAS MODELS:

Takagi Gas Tankless Water Heaters
Compare ALL Takagi tankless waters

Takagi is an industry leader with a name and product you can rely on for years to come. From their smallest
T-Kjr (TK Junior) single unit to their large TM-32 Mobius unit that can be Multi-Linked, you are sure to
find a tankless water heater to meet your needs. Try one and you'll see why Takagi offers
the most durable and best quality tankless water heaters on the market today!



Takagi T-K4 indoor tankless water heater image
Takagi T-K4
Indoor
Takagi T-K4 outdoor tankless water heater image
Takagi T-K4
Outdoor


Takagi Flash TK Jr2 inside tankless water heater image
Takagi T-KJr2-IN
Indoor
Takagi Flash TK Jr2 outside tankless water heater
Takagi T-KJr2-OS
Outdoor
Takagi TD2 indoor tankless water heater image
Takagi TD2
Indoor
Takagi TD2 outdoor tankless water heater image
Takagi TD2
Outdoor


Takagi "Mobius" Series Tankless Water Heaters
For large residential / light commercial applications
Takagi Mobius TM32 tankless water heater image
Takagi Mobius TM32


Takagi T-Vent stainless steel venting can be found here




Noritz Gas Tankless Water Heaters
Compare Noritz tankless water heaters

Noritz does not compromise on comfort or safety! Noritz tankless hot water heaters heat water efficiently and flow rate performance is maximized by their dual flame burner technology. A second row of burners burns the escaped gas from the first row of burners causing an increased level of efficiency helping to stabilize temperature fluctuations. Noritz designs and manufacturers their heat exchangers from raw copper using 25% thicker commercial grade copper piping resulting in a dependable and superior quality product.
 
Noritz tankless water heater
Noritz NRC1111 Series
Noritz tankless water heater
Noritz NR111 Series
Noritz tankless water heater
Noritz NR981 Series
 
Noritz tankless water heater
Noritz NR83 Series
Noritz tankless water heater
Noritz NR71 Series
Noritz tankless water heater
Noritz NC380 Series
 


    Noritz tankless water heater
Noritz NC250 Series
    Noritz tankless water heater
Noritz NCC199 Series
    Noritz tankless water heater
Noritz NC1991 Series




Aquastar Gas Tankless Water Heaters

Aquastar by Bosch offers peace-of-mind by using smart, energy saving on-demand tankless water heating technology. When homeowners want an endless supply of hot water, but don't wish to constantly heat water they aren't ready to use, then a gas tankless water heater may just be the answer. Aquastar tankless water heater
Aquastar / Bosch



parts for Myson - Thermar - Homemaster gas on-demand water heaters

Scale removal system for Gas tankless water heaters




ELECTRIC MODELS:

Chronomite Electric Tankless Water Heaters
Chronomite uses ingeniously designed stainless steel coils to instantly heat water as it flows through strategically placed Celcon® plastic waterways inside the vessel. The use of Celcon® waterways prevents the build-up of calcium and alkali residue since these substances will not adhere to the Celcon®. Their unique patented microprocessor can be preset at the factory to assure the temperature output will remain constant, even when water flow rates may vary through the unit.
Instant-Flow® electric water heater
Chronomite Instant-Flow® electric
tankless water heaters
Instant-Temp® electric water heater
Chronomite Instant-Temp® electric
tankless water heaters
 
Instant-Temp® Eyewash electric tankless water heater
Chronomite Instant-Temp® EYEWASH electric tankless water heaters





Eemax Electric Tankless Water Heaters
Eemax offers a terrific selection of Electric tankless water heaters, one for almost every residential or commercial situation you will encounter. When you want a durable water heater you know you can depend on, you will want to own one of these units. Eemax has been making tankless water heaters since 1988. Their willingness to provide increased product configurations to serve the different temperate zones found all around this country has established them as a leader in the tankless water heater manufacturing industry.
Image of Eemax marine & RV electric water heater
Eemax electric
tankless water heaters
Eemax series 2 water heater
Eemax Series Two
electric tankless water heaters
Eemax commercial tankless water heater
Eemax electric (commercial)
tankless water heaters


Image of Eemax de-ionized electric tankless water heater
Eemax de-ionized
electric tankless water heaters
  Eemax whole house electric water heater
Eemax whole house
electric tankless water heaters
  Eemax digital readout electric water heater
Eemax digital readout
electric tankless water heaters





Bosch Electric Tankless Water Heaters
Bosch electric tankless water heaters deliver endless hot water and outstanding energy savings. Bosch is known for their quality products and their tankless water heaters are no exception. Bosch point of use heaters have a solid copper heat exchanger, copper-sheathed elements and a tough plastic exterior housing. The whole house model RP27PT has a solid copper heat exchanger, a metal exterior housing, weighs less than 25 pounds and fits virtually anywhere.
Powerstream Pro electric water heater
Powerstream Pro electric
tankless water heaters





Stiebel Eltron Electric Tankless Water Heaters
Stiebel Eltron electric tankless water heaters are an excellent choice for point of use hot water solutions. With the use of a scald guard thermostat and a safety high limit you can rest assured your water temperature will be within safe limits at all times. A rugged all copper sheathed heating element housed in an all copper cylinder is just another reason you can expect years of reliable operation. Stiebel Eltron's Tempra® Plus model heaters are engineered with an Advanced Flow Control, exclusive to the Tempra® Plus, to ensure a constant temperature output no matter how great your hot water demand may be.
Stiebel Eltron electric water heater
Stiebel Eltron electric
tankless water heaters
Stiebel Eltron electric water heater
Stiebel Eltron large
electric tankless water heaters





Seisco Electric Tankless Water Heaters
Seisco electric water heater
Seisco electric
tankless water heaters

Point-of-use Water Heaters

Ariston electric water heater
Ariston undercounter
point of use electric water heaters
Eemax mini-tank electric water heaters

Instant Hot Water Dispensers

Instant 190 degree hot water dispensers
Insinkerator hot water dispensers
"Little Gourmet" hot water dispensers
 

Water Heater Related Parts and Accessories

tankless isolation valves
drain pan for tankless water heaters
Takagi T-Vent gas vents and related products
Hard water / scale removal system for tankless water heaters
thermostats - control valves for gas water heaters
Z-Vent gas vents and related products
earthquake straps for water heaters
thermal expansion tanks
flexible gas connectors

to troubleshooting water heaters

to why buy a on-demand, instant "flash" water heater?

Click here to view items already in your shopping cart

Please note: For potential safety reasons, we do not recommend using PVC to vent gas tankless water heaters.
For the best results, we recommend using Category 3 stainless steel gas vent pipe for all gas tankless water heaters.

Frequently Asked Questions

Q. "Will an instantaneous water heater save me money on my utility bills?"
A.In many applications you can see a savings. There are some variables that could reduce the amount you save. One example is you will not run out of hot water, so longer showers could cut into your savings. Also, the cost of electricity, propane and natural gas in your area will affect the amount of money saved. The higher the cost for the energy type used to heat your water, the quicker you can recover the higher initial cost of installing a tankless versus tank style water heater.

Positives:

  • You will never run out of hot water. "You want an hour long shower? No problem!"
  • Electric units can be installed at the point of use.
  • You're not paying energy costs to heat water 24 hours a day.
  • They're easy to install.
  • Our electric units don't require a T&P valve (no tank!) - if code allows
  • Installing a tankless water heater can indeed be a bonus to the environment (why should we choose wastefulness when we're talking about finite natural resources?)

Negatives:

  • They all need a minimum flow rate & pressure to turn on.
  • The faster water flows through them, the lower the temperature rise. So, if you expect to take a shower while the clothes washer is running, you will need to select a unit sized to your maximum hot water flow requirements. (Gas units generally handle this a little better than electric models)
  • Electric units need heavy gauge wire. Example: the 9.5kw must have 8ga wire and a 50amp breaker.
  • Gas units need a much larger, special flue pipe and larger gas supply than a conventional water heater.
  • At times they can produce very hot water. It's easier to get scalded.
  • Gas units are more complicated than a conventional water heater.
  • With some brands, parts are hard to find (not a negative if you originally purchase from us, as we like to carry parts for the units that we sell).

Summary:
Tankless water heaters have their place. They're not "the answer" to every hot water need, but if they're used correctly they can be the solution to many of them.

Q. "If these units don't have a tank, how do they know when to turn on?"
A.The tankless water heaters have a flow switch built into them. When you turn on (open) the hot side of a faucet the water then moves (travels). Once the water is traveling at 3/4 of a gallon per minute or faster most tankless water heater switches will then turn on the gas or electricity.

Q. "What's the difference between a conventional flue and a direct vent?"
A.A conventional flue is what most people are familiar with. It typically consists of a double-wall flue pipe going from the top of the heater through the roof, venting outside. The fixture draws its combustion air from the space around it (utility room, garage, hallway, etc.). A direct-vent unit on the other hand, both vents and draws its combustion air through a specially designed pipe from the outside via an adjacent wall.

Q. "On the electric tankless models; why should I buy the thermostatic model instead of the lower priced flow model?"
A.The thermostatic model has a number of advantages. A non-thermostatically controlled model's outlet temperature is dependent on the flow rate, and it can create a potential problem with anti-scalding valves and the like. When in doubt, please order the thermostatically controlled models. Also, the thermostatic models can have a warm or hot water source, but the non thermostatically controlled models are only designed for a cold-water source/input.

Q. "I would like to convert my natural gas tankless heater to be able to use LPG (propane) gas instead. Do you offer a conversion kit?"
A.Sorry, but we don't. Even if we could, we probably wouldn't, as in most cases it is not a good idea to convert one type of gas for another. Burners can be different, orifices, etc. Not only is the BTU rating different for these two gases, but also the heat of the flames and a number of other factors. We simply do not wish to sell ("profit from") something that might create a non-safe environment.

Q. "Can I install tankless water heaters in my attic?"
A.Without seeing all of your plumbing piping, etc. it is difficult for us to answer with a straight "yes" or "no." One must be sure that a possible water siphoning condition can not be created as tankless water heaters should not have air in the lines. Water siphoning out of any brand of tankless water heater might damage the heater when there is no water (or not enough water) in the lines.

Q. "Is it possible to drain a tankless water heater to prevent freeze damage when not in use?"
A.Yes on most brands (best to check first though with the supplier). Simply drain both lines 'to' and 'from' the unit. As long as there are no check valves in the way, that should drain the water from the unit. To guarantee that there is no water in the unit, we recommend two drain valves - one before and one after the unit - as well as blowing air through the water line.

Q. "Your products specify the 'temp. rise' based on the GPM flow; what do you mean by this?"
A.Temperature rise is the amount the heater raises the temperature of the incoming water, based on the flow rate shown of that water.

Q. "Can I replace my existing tank type water heater with a tankless water heater?"
A.Yes, but there are specific requirements that will need to be addressed. Gas units will require a larger, special vent pipe and a larger gas supply line that not only will supply the water heater, but all other appliances on that gas pipe run. Electric units will require larger gauge wire and breakers than most tank type water heaters.



Help save our environment by saving energy.
Stand-by heat loss wastes a LOT of energy.
Installing tankless water heaters saves
energy, as well as your pocket book in the
long run. Think future! Think green.
Think Tankless!

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