Marey ECO150 Electric Tankless Water Heater, 14.5kW 240V, Smart Technology, Unlimited On-Demand Hot Water Heater



  • Electric tankless water heater 14.5kW / 240V
  • ETL Certified
  • Compact in size: 14.7”x 8.7” x 3.5” (HxWxD)
  • Save Energy and Water: Marey tankless water heater heats water on demand, eliminating the standby energy consumption of tank-type units..
  • Unlimited Hot Water on Demand: This Marey tankless water heater is ideal for up to 2 points of use in the Southern and Central states of the US.
  • Save Space: The ECO150 tankless water heater is compact enough to be installed in limited spaces.
  • Installation Requirements: The ECO150 tankless hot water heater needs a dedicated installation with 220V~240V power supply, a 70 Amp double pole breaker, 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.
  • 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.


Marey ECO150 provides 14.5kW of power, being the perfect solution for up to 2 points of use. This unit provides 29° F increase at 3.5 GPM, allowing you to have two showers 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.

  • Minimum Activation Rate 0.50 GPM
  • Minimum Temperature 40 °F – 125 °F MAX.
  • Water Connection Location – BOTTOM
  • Water Connection Size 1/2”

Flow Rate:

  • Flow Rate @ 35°F Rise 3.0 GPM
  • Flow Rate @ 45°F Rise 2.5 GPM
  • Flow Rate @ 55°F Rise 1.7 GPM
  • Flow Rate @ 65°F Rise 1.5 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.
  • Flow switch activation mechanism allows the unit to produce constant temperatures with as little as 0.5GPM / 5PSI.
  • No need for pre-heating: instant tankless water heater on demand heating.
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