Best Marey Tankless Water Heater Reviews

"Marey...has been delivering innovative hot water solutions over the past 60 years." 

Puerto Rican entrepreneur, Mariano Reyes, founded Marey in 1955 (the company name derived from the joining of his first and last name), who devoted his entire life to the production of innovative tankless water heaters. Chasing his dream of sustainable, endless hot water, he developed the point-of-use shower water heater. With his leadership, he contributed many new innovations to continue to solidify the Marey as a market leader in Puerto Rico. From the first shower heater product Marey created, they have expanded their product lines to many different options to best suit customer’s hot water solution needs. To this day the Marey brand continues the same passion which Mariano founded the business upon to provide the most reliable and efficient products at an affordable price for their customers.

After years of a becoming established in Puerto Rico, they expanded as the market leader in the industry by selling units all across North America, as well as Central America, South America and the Caribbean Islands. Today, Marey tankless water heaters are being sold and installed worldwide. They have Texas and Puerto Rico Service Centers consisting of complete in-house customer and technical services departments.  

Marey continues to innovate and are constantly introducing new products to best utilize the most current technology available to enhance their hot water solutions. As a result, our products are always operating at the most efficient level compared to the industry standard.

If you are in the market for point-of-use systems, Marey’s products are some of the most affordable in the market. Marey’s selection of tankless water heaters are well known for their versatility, efficiency, and diversity. Anywhere hot water is needed, Marey provides an energy-efficient solution. Marey has a track record of standing behind its products and customers with customer service and cutting-edge technology.

Safety, quality, innovation, and service are the cornerstones of Marey’s success. They claim a commitment to innovation and customer satisfaction is evidenced by their highly efficient water heaters that include an industry-leading 5-year warranty.

Marey is dedicated to being environmentally-friendly and making the world a cleaner and healthier place to live. They have made it a priority to produce the highest quality, most eco-friendly, affordable, and innovative tankless water heating products on the planet.

Marey maintains regional offices/warehouses in California, Texas, Pennsylvania, Spain, Brazil, Canada, and Puerto Rico. Their products are being installed worldwide.

The bottom-line is that Marey’s expertise is in the low-cost, point-of-use tankless water heater space. Customer reviews of their products are mixed. The majority rave about the ease of installation. On the other hand, there are rather mixed reviews as to the overall quality and durability of their units. Some absolutely love them, while others seem disappointed by their quality, but this may be the result of products being created to be as affordable as possible. At the very least, their customers can be confident they are buying a product from a company that has been in business for over 60 years. They must be doing something right!


1. Marey Gas 10L - Propane (LP) - Best Model

If you're on a budget and need a water heater to heat water for only a shower and sink faucet simultaneously, then I recommend choosing Marey Gas 10L.

Marey Power Gas 10L Tankless Water Heater requires NO electricity! It's simple to install and requires no electricity to operate. With its energy-saving design, it heats up in seconds using gas. 

It is available in propane (model GA10LP) and natural gas (GA10NG) but the NG unit is no longer available on Amazon. Has adjustable gas and water controls and an electric pulse ignition powered by 2 D-cell batteries (not included). It's parts are rust-proof, doesn't leak, and has anti-combustion and gas pressure safety protection. 

It works easily with low levels of water pressure. In warmer climates the propane unit's GPM is 3.1 gallons (less in colder climates where the temperature rise is more significant). 

It is very energy efficiency: 54% - 87%; Exhaust uses a flue duct system.

Dimensions: Approx. 24" x 14" x 7"; Weight: Approx. 21 lbs.; Model Numbers: GA10LP (Liquid Propane Gas).

If you're looking for a non-fussy, inexpensive water heater that'll still meets your point-of-use needs, the Marey Gas 10L might be the perfect solution. 


  1. I have had 5 Marey propane water heaters in 2 locations over the last 4 years. They are garbage. They have issues heating the water, and have blown out causing huge water damage. I will never have one again at any cost. Just replaced one with a Rennai. They look the same, but there is no comparison from what I see so far.

  2. I purchased my marey heater two years ago….and it has yet to RUN, I do not mean “correctly ” I mean fire up and run !!!! there is absolutely no customer support and you will wish you had never heard of this company !!! today is 3/21/19 and this weekend I will tear out this unit….and replace with something that has support and good reviews !! shame to waste my money and my effort but I has worked at this on and off for TWO years and had help from an installer friend/plumber …he just looks at me and shakes his head !!! complete Chinese garbage.. MARK MY WORDS !!!

    • Hello Jeff,

      Sounds like you have had a very poor experience with Marey. You mention that you had no customer support. I’m guessing you were in contact with them, but they never offered to a) send you a new unit or b) troubleshoot your issue or c) offer to give you your money back? In other words did you have any interactions with Marey about your unit for the past 2 years? Marey doesn’t get top ratings, but they should still work. Still your input is very helpful and a cautionary tale to would-be buyers. I would suggest you put your comments on Amazon if the model you purchased is still being sold there. I’m curious as to what model you purchased.

      We wish you the best going forward.

      TanklessHub.com

  3. I bought a Marey ECO270 11/2019. After 1st year outlet temp sensor had to be replaced. Less than 6mos after that(12/2020) wire insulation melted in unit. Was promised new parts by tech over phone. Now (1/2021) no reply from repeated cust serv calls and emails. Still no hot water. *VERY CRAPPY* cust support! Dont buy this brand!

  4. I just purchased a Marey Eco 150 and all the water lines are hooked up but no hot water is coming out of the faucet. The shower was on for over 20 minutes and it’s still freezing cold I need a tech to call me immediately. If you can’t troubleshoot over the phone I’m going to return it and get my money back.

    • Hello Phil, I am very sorry that you are having trouble with you Marey unit. We are a review site and have no affiliation with any of the Brands listed on our site and do not have technicians. I would suggest that you contact Marey directly or a plumber in your area to troubleshoot. So sorry you aren’t getting the hot water from your new unit. Please let us know if and how you were able to resolve your issue.

      TanklessHub

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