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Marey ECO180 Electric Water Heater 240 Volt 5 GPM


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Best Electric Tankless Water Heater Marey ECO180 Instant Whole House 5 GPM 18kW

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Marey ECO 180 Electric Tankless Water Heater provides instant hot water. No water tank required.
Electric 220/240 volt

**Tankless ** Instant ** On-Demand**5 GPM

Why Marey Tankless Water Heaters? Because Marey has designed and manufactured tankless water heater since 1955.

Why Marey? Because this unit has passed the DOE Compliance with an "Energy Factor Rate of 0.97" making it one of the best water heaters on the market.

Why Marey? Because we feel that everyone should have access to hot water and be able to cut their energy consumption at the same time.

SO, If you want a good quality tankless water heater with a 5 year all parts warranty, buy a Marey from us.
Free Return Shipping on Manufacturer defects within 30 days of purchase


This unit is in compliance with DOE regulations, 10 CFR 430 .32 (d), which determines the amended energy conservation standards for residential water heaters.

  • Energy Factor > 0.82 (for gas models) and Energy Factor> 0.93 (for electric models)

This ECO 180 Electric unit has a Energy Factor Rate: 0.97


The perfect hot water solution, fully automated so you just the on the faucet!

Marey ECO180 220/240 volt  electric water heater can provide instant on demand hot water when ever you need it.
Works great for small to mid size homes, apartments, condos, cabins, lodges, businesses, schools, offices,  mobile homes, camp grounds, etc., etc., etc....
Comes with an installation guide, mounting hardware and a five (5) year all parts warranty. 
Oh and the price isn't bad either.

Bringing you the best affordable tankless water heaters on the market.
We take our business very serious and appreciate your business.
  We strive to provide you with excellent customer service and post sales assistance.


If you need help in determining which size unit is right for you.

Contact us and we will more than glad to assist you.


Get Yours NOW!!! 

Please make sure you check out the Temperature Map and the Flow Rate Chart to determine which heater is right for you. Follow the links below to download the PDF files to your computer.




This image is only a representation to illustrate how electric tankless water heaters work

Where does your money go?



The Pre-Sediment Filter and Isolation Valve Kit images below are for visual reference only.
Not included with water heater and must be purchased separately.



It is recommended that an inexpensive pre-sediment filter be install for your Marey tankless water heater.  This will help capture debris or particles that would interfere with the operation and longevity of your unit.  

We suggest that you flush your Marey Tankless water heater at least once a year with white vinegar.  There are numerous Youtube videos that demonstrate the procedure.  By installing an isolation valve kit to your Marey tankless water heater this makes the process much simpler. 



Item Description


The smartest hot water solutions for the whole house.

  • Smart Technology: Self modulated unit, that regulates the amount of energy used by the heater.
  • This tankless water heater is made with stainless steel cover guaranteeing long life to the product.
  • Adjusts to your needs: you can set up your desired output water temperature!
  • Compact and powerful.
  • Saves water and up to 60% less electricity than conventional tank water heater, making it cost-effective and environmentally friendly.
  • 5 years warranty.





Marey since 1955


Marey ECO180 units use SMART heater technology. 
It is a technology that self-modulates the amount of energy used by the heater,
thus providing more efficient heating than the old standard type of heating where the heating element is on or off,
giving you more consistent temperatures, while saving you money.

CE and ETL approved.

The tankless heater that has smart technology that avoids the excess temperature waste to any hot water point of use.

The only one in the market that doesn't get sediments.
German technology.
Patent design heating elements (long life time).
Patent and innovative technology.
TPCS thermodynamic cycle system.
Terminator of the limescale.
Aluminum magnesium alloy casting body.
Stainless steel aqueduct.
Imported stainless steel.
Insulated heat-conducting magnesium powder.
Nickel-chromium heating element.



Technical Specifications



ECO180 Tech Specs




 This video is for the ECO 180, however they are similar. 

Contact a professional for you installation questions.


for the Marey Heater Corp.


You may cancel your order before we place the shipping instructions with the warehouse. Normally we will send you a "Thank You" message informing you that we are placing the order. If you need to cancel you must respond to that message and request the cancellation. Once the order has been placed, paid for and shipping directions given to the warehouse your order can not be cancelled.


  • Model: ECO180
  • Shipping Weight: 20lbs
  • 10 Units in Stock
  • Manufactured by: Marey

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This product was added to our catalog on Friday 20 March, 2015.

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