Quick Overview:

  • ETL approved
  • Designed using SMART Technology.
  • Up to 3 point of use application
  • Recommended for the whole US region


  • 220 volts
  • Requires (2) 50 Amp double pole breaker.
  • Must be installed no more than 40 feet from the intended point of use.
  • Whole house application
  • Its LCD panel allows you to program the desired temperature


Marey ECO180 Refurbished unit 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.

  • 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.
  • 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