Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box
Manufacturer: Marey
SKU: ECO180
















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(888) 999-1522
$ 379.00
$ 279.00
$ 279.00
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Product Overview
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.
- Compact design: saves space
- Requires very little water pressure to activate
- Simple to operate and easy to adjust
- ETL approved
- No pre-heating



100% certified by the manufacturer
Guaranteed to work like new
5 year manufacturer warranty
Authorized Marey dealer
Ships from the manufacturer in FL
Features
- ETL approved
- German technology
- 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.
- The only one in the market that doesn’t get sediments.
- Compliant with Department of Energy electric tankless water heater requirements
- Smart technology that avoids excess temperature waste
- Adjusts to your tankless water heating needs
- The only tankless water heater in the market which is not prone to sediment buildup
- Compact design allows for easy installation in any home
- German tankless water heating technology
- Saves water and uses up to 60% less electricity than conventional tank water heaters, making it cost-effective and eco-friendly
- Patented heating elements design ensures long lifetime
- Smart technology that avoids the excess temperature waste to any hot water point of use
- Excellent customer service support and 5 year warranty
- Our electric tankless water heater uses SMART technology by only applying the power needed to heat the water to the desired temperature, maximizing energy savings
Specifications
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 |
Indoor or Outdoor Installation | Indoor |
Voltage | 220V - 240V |
Power | 18KW |
Minimum Required Breaker Size | 2 x 50A |
Maximum Amperage | 75A |
Recommended Wire Size | 2 x 8 AWG Copper |
Minimum Flow to Activate Unit | .85 GPM/ 3.2L per minute |
Safe Operating Pressure | 5 PSI - 85 PSI |
Water Connection | 3/4" NPT |
Installation | Mounted Vertically |
Temperature Setting | Digital Panel |
Dimensions | 11" x 16.1" x 3.5" |
Weight | 17.7 lbs |
Package Contents
Water Heater
Mounting Kit
Owner's manual
Warranty



This product comes with a 5 year factory warranty.
Manuals & Documentation
Customer Reviews (36)
This is the third Marey hot water heater I’ve purchased. I’m very happy with the product and the customer service I’ve received.
Bought for a whole house solution, works fine for kitchen and showers but cannot keep up with the bathtub (The fill rate is too high) for this unit. Next time I would go with the next higher unit.
Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box (Free upgrade to new unit)
So far we’re really happy with our new water heater. Easy to install and so far it’s been working great.
Item is as described, works great so far. We are using it for one week now
The water heater works better than expected. Then, when we had a problem of our causing... They helped us fix it in minutes.