Home / Tankless Water Heaters / Electric Tankless Water Heaters / Gas Tankless Water Heaters
  Gas Tankless Water Heaters, Oil Tankless Water Heaters, Propane Tankless Water Heaters, Electric Tankless Water Heaters
  Home
Contact Us
Search - About Us
Shopping Cart
 
HACKER SAFE certified sites prevent over 99.9% of hacker crime.

Gas Tankless Water Heaters

Takagi T-KJr2-IN
Takagi T-KJr2-OS
Takagi T-K4-IN
Takagi T-K4-OS
Takagi T-M32

Rinnai V53i
Rinnai RL75i
Rinnai RL94i


Bosch 330 PN
Bosch 520 PN
Bosch 520 HN


Electric Tankless Water Heaters
PowerStar
PowerStar (POU)
Stiebel Eltron


Electric Mini-Tank Water Heater
Ariston GL2.5
Ariston GL4
Ariston GL6+


Oil Tankless Water Heaters
Toyotomi OM-148
Toyotomi OM-180


Water Heater Venting

4" Z Flex Venting
3" Z Flex Vent
5" Simpson B Vent
6" Simpson B Vent


Water Heater Accessories

Bosch AQ4 Power Vent
Webstones Valves
Water Connections



What Size?
Site Map
Customer Info






Gas Tankless Water Heaters - Save Energy!  Saving money! Save Space! - click here!

Tankless Water Heaters
On Demand - Oil, Electric, Propane or Natural Gas Hot Water Heaters

Review all Tankless Water Heaters:

Review all of our Gas Tankless Water Heaters

Review all of our Electric Tankless Water Heaters

Free Shipping on most Gas Tankless Water Heaters!

Featured On Demand Water Heaters:

Takagi TKJr2 and Takagi TK4-IN Gas and Propane Tankless Water Heaters

Takagi T-K4-IN Tankless Water Heater

Power Vented with Direct Vent option. Also, use the T-K4-OS for outside installation for warmer areas. High Efficiency up to 5.7 gallons of hot water with a 55-degree rise.


Rinnai Gas and Propane Tankless Water Heaters

Rinnai Tankless Water Heaters

Rinnai Direct Vented Light Propane (LP) or Natural Gas Tankless Water Heaters will deliver up to 7.5 gallons of hot water per minute.



Electric Tankless Water Heaters by Stiebel Eltron

Stiebel Eltron Eletric Tankless Water Heaters

Save Energy & Reduce Your Electric Bill with Sleek Design Saves Space and Control Temperature Simply by Setting a Dial. Whole House Electric Tankless Water Heater



Electric Whole House Tankless Water Heater

PowerStar Electric Tankless Water Heater

PowerStar Whole House Electric Tankless Hot Water Heater 2 Sizes - AE 115 with up to 2.6 gpm and AE 125 with up to 3.8 gpm in a box a little more than 1 foot square.


Z Flex NovaVent 3-inch Stainless Steel Venting
ZFlex NovaVent 3-inch Stainless Steel Venting CAT III

NovaVent ZFlex 4-inch Stainless Steel Venting
ZFlex NovaVent 4-inch Stainless Steel Venting for Takagi Hot Water Heater
Tankless Water Heater Information:

What are the advantages of a tankless water heater?
A tankless water heater also known as a point of use water heater or on demand water heater, turns on when you open a hot water faucet and turns off when you close the faucet, so the energy that is consumed is only for the hot water that is being used. Since there is no storage of hot water and thus no constant heating and re-heating of stored hot water, you’re not wasting energy heating water when you do not need it, such as when you’re sleeping or not at home. This energy savings translates to dollar savings for you and reduced impact on our environment. Furthermore, since a tankless water heater heats the water as you use it, you can have an endless supply of hot water, provided you size the unit appropriately. Tankless water heaters are also designed to last for 20 years. Also, Tankless Water Heater are smaller than hot water tanks.

How do tankless water heaters work?

When a hot water tap is opened, the cold water enters the heater and triggers the heating elements or burners to turn on. Your hot water tap acts as an ignition key for the energy used to heat the hot water you need. The water is then heated as it flows through the heating elements or heat exchanger. As you change the water flow, a water valve or thermostat controls the heating elements or burner flame to maintain a constant temperature. The amount of energy used is always proportional to the volume of hot water being used. When the hot water tap is turned off, the tankless water heater shuts down.

What factors do I need to consider before making a purchase?

  1. Choose Gas or Electric – gas water heaters are typically more powerful than electric hot water heaters, however the gas models have specific venting, combustion air, and gas line requirements. Each requirement is summarized in the product comparisons and detailed in the installation manual on each product Tech and Specs pages - please review for the best on demand water for you!

  2. Flow rate – how much hot water flow is needed simultaneously? Click here to see information on sizing tankless water heaters.

  3. How do I find the right tankless water heater? The best way is to take a look at the sizing information we have. Click here to see information on sizing tankless water heaters.

  4. How do I find online manuals for the tankless water heater that we want to install? Click here to see all of our hot water heaters manuals online.

  5. If I want to install a gas tankless water heater - what information do I need for venting and make up air? Well - each gas tankless water heater has special needs - so the best idea it to check out the tech and specs of the water heater you are interested in or download a install manual above for all the information you can get.
  6. If I want to install an electric tankless water heater - what information do I need? Well - you should check out what amount of amps and volts that the electric tankless water heater uses - and again - the best idea it to check out the tech and specs of the water heater you are interested in or download a install manual above for all the information you can get.

  7. Still need more information? Give us a call or click here to leave us a message online and we will contact you back.



Review all our Tankless Water Heaters:

Review all of our Gas Tankless Water Heaters

Review all of our Electric Tankless Water Heaters




Thanks for visiting TanklessWaterHeatersDirect.Com