Marey ECO180 Electric Tankless Water Heater, 18kW 240V, Smart Technology, Unlimited On-Demand Hot Water Heater



  • Electric Tankless Water Heater 18kW of power / 240V
  • ETL Certified
  • Compact in size: 16.5”x10.9”x3.5” (HxWxD)
  • Flow Activated
  • Save Energy and Water: Marey tankless water heater heats water on demand, eliminating the standby energy consumption of tank-type units.
  • Whole House Application: Number of points of use may vary depending on region and temperature of water source.
  • Save Space: The Marey ECO180 compact tankless water heater is designed to fit seamlessly into limited spaces, providing efficient hot water solutions.
  • Installation Requirements: The ECO180 tankless hot water heater needs a dedicated installation with 220V~240V power supply, 2 (two) 50 Amp double pole breakers, and 6-gauge wires.
  • Warranty: 5 years limited warranty by manufacturer. 1st year covers parts and labor from Marey Service Center. Additional 4 years coverage for parts only. Shipping remains under customer’s responsibility.


Marey ECO180 provides 18 kW of power, being the perfect solution for a whole house application. This unit provides 36° F increase at 4.0 GPM, allowing you to have up to 3 points of use running simultaneously in hot climates. Check the temperature map for more information. Tankless water heaters provide an efficient hot water solution eliminating the stand-by energy consumption of conventional tank units.

Besides the fact that water heaters are used in our homes, they are also used in hotels and casinos. A casino water heater is a more permanent accessory as it is permanently housed in the casino kitchen. ECO180 provides hot water on demand like other portable heaters, ideal forzodiac casino mobile use when large numbers of people need heated water at the same time. Not all casino heaters have the same performance rating. The most popular types of heaters are Marey ECO180 provides 18 kW of power, extremely energy efficient.
  • Minimum Activation Rate 0.85 GPM
  • Minimum Temperature 80 °F – 140 °F MAX.
  • Water Connection Location – BOTTOM
  • Water Connection Size 3/4”

Flow Rate:

  • Flow Rate @ 35°F Rise 4.0 GPM
  • Flow Rate @ 45°F Rise 3.0 GPM
  • Flow Rate @ 55°F Rise 2.5 GPM
  • Flow Rate @ 65°F Rise 2.0 GPM

Additional Features:

  • German-designed with high quality stainless steel water channel and heating chamber. The ECO line by Marey is the only one in the market with a corrosion resistant patented heating element which reduces hard water build up from chlorine and calcium.
  • Activated by water pressure (5 to 85 PSI) from the moment the faucet is opened.
  • No need for pre-heating: instant tankless water heater on demand heating.
  • We recommend installation be performed by a professional for safety and compliance.
  • Why Choose Marey: Marey offers water heating solutions for every budget and lifestyle. Since 1955, we’ve been providing exceptional and innovative tankless water heaters, meeting your every need.
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