Marey Power Gas Tankless Water Heater

Editor rating

4.1/5 on November 1, 2016

User's rating

69 reviews


  • Tankless water heater
  • Gas-powered
  • Battery powered (D-Cell Batteries)
  • Ideal for indoor and outdoor use
  • Save up to 60% on your monthly electric bill
  • Built-in safety features


  • Will not appeal to everyone
  • Quality issues


Marey's 3.1 GMP tankless water heater is a versatile hot water generator packed with great features at an affordable price point.

Marey’s 3.1 GMP tankless water heater is a gas-powered heater that promises to generate hot water in just a few seconds. This water heater comes in two models, one that’s powered by liquid propane and another that utilizes natural gas. Whichever models you get, Marey’s 3.1 GMP tankless water heater does not require electricity, allowing you to get access to hot water wherever and whenever. The 3.1 GMP tankless water heater can be used in the home or outdoors.

It can operate using 2 D cell batteries for incredible savings. The Macey brand promises that its gas-powered water heater can save you up to 60% less energy consumption compared to conventional water heaters and we agree. Apart from being cost-effective, this is an eco-friendly water heater.

Other extras we love include the adjustable gas and water controls, the electric pulse ignition (which can be used when switching to D-battery cells) and an anti-combustion and gas pressure safety protection. The only downside on this water heater is it won’t appeal to everyone, particularly those who prefer electric-powered water heaters. Also, some users are complaining about receiving a broken unit. We did not have the same issue but this is something worth noting when purchasing this water heater.

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