Model # GA10NGDP

Internet #204357301

MAREY 3.1 GPM Natural Gas Digital Panel Tankless Water Heater
0764177000293

MAREY

3.1 GPM Natural Gas Digital Panel Tankless Water Heater

  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
$232.79 /piece

Frequently Bought Together

Product Overview

The MAREY GA10NGDP Indoor Natural Gas Tankless Water Heater can provide up to 2.7 Gal. per minute for a perfect shower at 115°F output water temperature. You can see your output water temperature trough a digital panel, making easy to adjust the water and gas flow to your desired output temperature It is also called water heater on demand, because it heats water only when needed, saving energy. It is designed to supply endless hot water for up to 2 or 3 points of use simultaneously (for a variety of residential hot-water applications). Its compact design saves space and is easy to install: you will only need 2-D cell battery for the ignition and a venting (not included in the box). MAREY has been on the water heating business since 1955, bringing tradition and innovation together.

  • Compact design saves space and is easy to install almost anywhere
  • Save up to 60% on electricity bills for water heating
  • Provide endless hot water on demand and only as needed
  • No electrical connection is required
  • Unlimited hot water whenever is needed
  • Hot water is available in just a few seconds
  • Perfect alternative for those homes experiencing frequent power outages
  • Works easily with low levels of water pressure
  • Can last a lifetime, keeping 87% efficiency level
  • Cost-effective and eco-friendly
  • Determine the proper Tankless Water Heater for your household by using our buying guide

    Marey Tankless Water Heater

  • Use our temperature map to calculate your Gallons Per Minute

    Marey Tankless Water hEater Temperature Map

Info & Guides

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Price
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Name 3.1 GPM Natural Gas Tankless Water Heater 3.1 GPM Liquid Propane Tankless Gas Water Heater 3.1 GPM Natural Gas Digital Panel Tankless Water Heater 3.1 GPM Liquid Propane Gas Digital Panel Tankless Water Heater
Brand MAREY MAREY MAREY MAREY
Ratings (7) (23) (9) (6)
Flow Rate @ 45 F Rise (gallons/min) 2.25 2.25 2.25 2.25
Gas Type Natural Gas Liquid Propane Natural Gas Liquid Propane
Indoor/Outdoor Indoor Indoor Indoor Indoor
Total BTU 79.228 Btu 79.228 Btu 79.228 Btu 79.228 Btu
ENERGY STAR Certified No No No No
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Customer Questions & Answers

I have 3/4 inch cold and hot water lines, unit says 1/2 inch water line connect, will this work?

I have 3/4 inch cold and hot water lines, unit says 1/2 inch water line connect, will this work?
Asked by: Pete
only with special fittings
Answered by: goofy
Date published: 2017-03-22

Hello, does this need to be installed indoors? Or can it be on an outside wall? Weaver

Hello, does this need to be installed indoors? Or can it be on an outside wall? Weaver
Asked by: weaver
must be installed on the inside of a outside wall with water and gas plumbing.
Answered by: goofy
Date published: 2017-03-22

Is it a power vent ? dose the vent piping come with it

Is it a power vent ? dose the vent piping come with it
Asked by: Jim
no!
Answered by: goofy
Date published: 2017-03-22

it says not energy star / how bad is that for savings

will this size work for 3-4 persons
Asked by: ron
I purchase our because of the amount of water that was getting heated during the night when everyone is sleeping. As of right now I can't tell because of the winter months. Because we have gas heat.
Answered by: Christopher
Date published: 2017-03-14
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Customer Reviews

3.1 GPM Natural Gas Digital Panel Tankless Water Heater is rated 4.0 out of 5 by 9.
Rated 5 out of 5 by from First, let's answer a few questions: 1. Made in China 2. Not Energy Star Compliant 3. No AC neede... First, let's answer a few questions: 1. Made in China 2. Not Energy Star Compliant 3. No AC needed 4. Indoor use only 5. No automated controls 6. Not power vented With the above said, my licensed plumber friend installed the unit for me, buying all of the needed hoses, adapters, and other necessary hardware, and testing all connections. Expect it to cost more than the install cost of another tank-type water heater, as the plumber will have to make changes to your present piping. If you are replacing a tank-type water heater, the space previously occupied by your old water heater should be enough, with proper venting, to mount the tankless unit and have enough combustion air to operate it. As the unit is not power vented, and has no automated controls, 2 "D" batteries are enough to enable the gas solenoid and fire the piezoelectric igniter. The front panel of the unit has 3 controls; a winter/summer switch (winter water is usually colder than summer water, and needs a "boost"), a water flow control, and a flame intensity control. This unit also features a backlit LCD output temperature display, on the front of the unit The manual is long on installation instructions, but short on explanation of how to adjust the "beast". Tank-type water heaters have a simple "set-and-forget" thermostat, which simply keeps a big tank of water at a preset temperature. On-demand water heaters must deal with changing input water temperatures and water flow rates, since it is heating water "on-the-fly".. You can think of the tank on a tank-type water as a "buffer" which modulates changes in temperature. With an on-demand unit, you modulate temperature by varying water flow after your initial setup. The lower the flow (after the activation threshold has been exceeded and the unit turns on), the HOTTER the water will get. This means that turning on your shower, which usually features a low-flow shower head, will actually make the temperature RISE while you are showering. Adding cold water to cool things off can ALSO make the temperature of your shower RISE, as it further constricts the hot water flow. These heaters all have an "efficiency factor".. the number for this heater is .82, not enough to qualify for Energy Star status - NO tax credit if you buy this unit. However, I think that the low purchase price more than makes up for the lack of Energy Star rating. The answer here is to choose the right unit for your home, start with relatively low settings, and get a feel for the correct settings of your spigots. Of all of the various sinks, washing machine, dishwasher, etc., I think the shower is most crucial, as it is the one that can turn you into a Lobster if you let it get too hot. I was going to buy a 16-liter/minute heater. They were sold out everywhere - now I'm glad I didn't. My wife and are the only occupants of a 1-bathroom home. We don't usually use more than one sink, shower, or washer at a time. I chose the 10L Marey tankless unit for the combination of low price versus a replacement 30-gallon tank-type heater (which would have cost twice as much to purchase), and savings in fuel consumed over time It didn't hurt that most of the tankless competition cost 3 to 4 times as much. Why so cheap? See # 1. above. (I didn't know this at the time, and only found out after the unit was installed, as NONE of the included literature alluded to the country of origin.) I found the best initial setup to be with the summer/winter switch to winter (It's January), the water flow control to MINIMUM, and the gas flame intensity control to about 25%. I get water at about 125 degrees with the minimum flow necessary to activate the heating flame while showering with a bit of cold water. The water at the sinks can get a bit hotter. You will have to experiment a bit, especially in the shower. Conclusions? 1. It works 2. This 10 Liter/minute unit is more than enough for a 1-bathroom home 3. It will get HOT if you set it that way - can produce up to 160-degree water I have only had the unit for about a week. I will update this review if possible as time goes by
Date published: 2017-01-27
Rated 4 out of 5 by from Works okay but read This water heater is what you'd expect for the price. Don't get me wrong, it works well! The thing is that it has to have a certain amount of flow to come on and stay on. Your average shower head is 2-2-2.5 GPM, when you mix the hot and cold on your shower for optimum temp, this heater will most likely shut off. It must have to have 1.5 GPM to come on. We just took the restrictor out of our shower head and it does fine on the lowest flow setting
Date published: 2016-12-13
Rated 5 out of 5 by from Great tankless Went in like dream. Had to argue with plumber to install per Marey online videos. He finally did what I wanted. Works great. Easy future access for service or replacement. Only negative is that the manual does not explain controls adequately.
Date published: 2017-01-03
Rated 4 out of 5 by from Easy to install, no problems, works great Easy to install, no problems, works great
Date published: 2016-12-06
Rated 2 out of 5 by from The heater requires to be mounted on the outside wall for venting exhaust. water and gas lines m... The heater requires to be mounted on the outside wall for venting exhaust. water and gas lines must be plumbed to the out side wall for operation. Instruction manual does not explain this procedure very well. The gas and igniter didn't operate correctly and I had to return the product, the gas valve turned on to soon and when the igniter clicked, it caused the gas to explode. Because I don't live in a metropolitan area I couldn't find a technician to install.
Date published: 2017-03-21
Rated 5 out of 5 by from This is a good product but you will need to be computer savey in order to operate it. After it w... This is a good product but you will need to be computer savey in order to operate it. After it was installed I needed to get a computer techie to get it functional. But i suppose that is to be expected since everything is going that direction. Otherwise it works great.
Date published: 2017-02-08
Rated 2 out of 5 by from This was only for a small office, but am disappointed... This was only for a small office, but am disappointed by the length of time to get the unit to kick on, averaging about 25/30 seconds, and the need to have the faucet on full volume to get the burner to light.
Date published: 2017-03-07
Rated 5 out of 5 by from Very easy to install, as long as you have the basic knowledge of plumbing. Very easy to install, as long as you have the basic knowledge of plumbing.
Date published: 2017-03-14
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