Quick Overview:

  • ETL approved
  • Designed using SMART Technology.
  • Up to 2 point of use application
  • Recommended for the Southern and central states of the US


  • 220 volts
  • Requires (1) 70 Amp double pole breaker.
  • Must be installed no more than 50 feet from the intended point of use.
  • Recommended for a point of use where the incoming water temperature is above 70°F.
  • Its LCD panel allows you to program the desired temperature


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.
  • Must be installed by a professional plumber or electrician to ensure safety and quality.
  • Comes with 5 year warranty
Prices and promotions shown on this website are for sales and orders shipped only to the US Mainland. Puerto Rico customers please visit