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Marey Refurbished REFGA16LPETL 5.4 GPM Propane Water Heater


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Marey Tankless GA16LP ETL Propane 5.4 GPM Refurbished Water Heater


These units are customer returns.  
They have been inspected and tested by the Technical Support at Marey and deemed to be refurbished.

What does this actually mean? 

The customer set-up did not work with this unit and they returned it.  Nothing wrong with the unit.  Sometimes things just don't work out. 

What else does this mean?

You can pick up the "like new " unit for a nice discount on the price.
The only thing you lose is some of the out of pocket expense.



These Refurbished units carry the same Marey 5 year warranty. 

The convenience of hot water with just the turn of a faucet!


Marey GA16LPETL with digital panel, liquid propane gas (LPG) water heater can provide instant on demand hot water when ever you need it. Compact and durable, built to give you years of service. 

Works great for your home, office, trailer, RV, camper or 5th wheel

The Marey gas tankless water heaters have been approved for installation across all housing types. If the unit is to be installed in a mobile home, check with your local building code to see if there are any specific requirements for installation in your region. You may also check with your local fire department. If you need additional information on your mobile home's compatibility with a tankless hot water heater, please contact the U.S. Department of Housing and Urban Development .  http://portal.hud.gov/hudportal/HUD).

If the unit is going to be installed in an RV, camper, or 5th wheel the customer should check with their local department of motor vehicle office to determine what the laws and regulations are for installing a tankless hot water heater.

The Marey gas tankless water heaters can be converted to support either fuel type (liquid propane or natural gas). To convert the unit, the customer must contact Marey customer service and purchase a conversion kit.

CE and ETL Approved:  The ETL Listed Mark is proof of product compliance (electrical, gas and other safety standards) to North American safety standards.

The tankless heater that has smart technology that avoids the excess temperature waste to any hot water point of use.
This unit was designed with German technology and the patent design heating elements offer a long life time. 

The unit also has the TPCS thermodynamic cycle system.  Designed to terminate lime scale  with the Aluminum magnesium alloy casting body,  stainless steel aqueduct, insulated heat-conducting magnesium powder, and the Nickel-chromium heating element.

Gas and Water Connection Sizes are 1/2" NPT


Adverse Weather Conditions and Tankless Water Heaters 



Marey International, LLC.

For the best service, buy from a Marey Dealer!




Bringing you the best affordable tankless water heaters on eBay.
We take our business very serious and appreciate your business.
  We strive to provide you with excellent customer service and post sales assistance.


If you need help in determining which size unit is right for you.
Contact us and we will more than glad to assist you.

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Technical Specifications

Here are the Specification concerning the MareyGA16LPETL Tankless Water Heater.

  Marey GA16LPETL



The 16L Liquid Propane Tankless Water Heater is the perfect energy efficient solution for your entire home and is sure to bring you and your family warmth with its endless flow of hot water available at whatever time your heart desires. An all copper heat exchanger maximizes the heat transfer which ensures your unit is operating at maximum efficiency, saving you energy and money. In addition, the flow sensor ensures proper activation with low pressure installs. Intelligent self-regulation compensates for any changes in volume of incoming water temperature. At a standard faucet flow of 1.5 GPM, the temperature increase is 95 degrees Fahrenheit. The LCD display gives an accurate outlet water temperature which ensures your hot water is always at the exact comfort level which you desire.




Quick Overview:

ETL approved.

  • Compact design saves: space and allows for easy installation just about anywhere.
  • Heats unlimited volume of water as needed.
  • Hot water is available in just a few seconds.
  • Activates by water flow from the moment the faucet is opened.
  • 5-year warranty.


- Saves water and up to 60% less electricity than conventional tank water heater, making it cost-effective and environmentally friendly.
- Can last a lifetime, keeping up to 87% efficiency level.
- Rustproof, no water loss due to leaks.

Bringing you the best affordable tankless water heaters on eBay. We take our business very serious and appreciate your business.
We strive to provide you with excellent customer service and post sales assistance. 

If you need help in determining which size unit is right for you. Contact us and we will more than glad to assist you.

Get Yours NOW!!!


  • Tankless Liquid Propane Gas Water Heater
  • ETL approved
  • Compliant with Department of Energy gas tankless water heater requirements
  • Digital Panel displays outgoing water temperature
  • Very DIY friendly and easy to install
  • Heats unlimited volume of water on-demand as needed
  • Minimum electricity needed for LCD display and ignition
  • Perfect alternative for homes with frequent power outages or off-grid applications
  • Only uses gas while water is flowing
  • Works easily with low levels of water pressure
  • Anti-combustion and gas pressure safety protection
  • Can maintain 87% efficiency level throughout a lifetime
  • Rustproof design, no water loss due to leaks
  • Saves water and uses up to 60% less electricity than conventional tank water heaters, making it cost-effective and eco-friendly
  • Excellent customer service support and 5 year warranty


This unit is in compliance with DOE regulations, 10 CFR 430 .32 (d), which determines the amended energy conservation standards for residential water heaters.

  • Energy Factor > 0.82 (for gas models) and Energy Factor> 0.93 (for electric models)


This GA16LPETL unit has a Energy Factor Rate: 0.88



The proper Venting Materials for the venting of the Direct Vent ETL Gas Series are as followed.

In the manual for these GA16 ETL units it is suggested that the venting pipe be AL29 4C Stainless Steel, due to the condensation being more acidic.

After testing on the other Marey gas fired units it was concluded that the preferred material for these heaters can be B-Vent (doubled walled, galvanized metal outside, polished aluminum inside).

Another option is Polypropylene venting material which is listed to ULC S636.

Intake air vent can be single wall galvanized, PVC, ABS, etc....

This unit requires 3" for both the exhaust vent and the supply air intake vent

We do not carry the venting for these units, but most of your local hardware stores should carry the B-vent & here is a URL for a companies that carries the AL29 4C stainless vent pipe and the Polypropylene venting materials.

(AL29 4C Stainless Steel)  Z-Vent Materials

(Polypropylene venting materials)  Polypropylene Materials ULC S636


For more information check here.

Marey FAQ

Venting Procedures

- For best results always minimize the length of the vent system. Keep the vent pipe routing as short and straight as possible.

- The water heater vent must not be combined with the vent from any other gas appliance or vent stack.

- The water heater vent must not be connected to a chimney.

- You must use vent components that are certified for use with this water heater as indicated within this manual. Do not combine components from multiple manufacturers.

- Air intake pipe may be ABS, PVC, galvanized steel, corrugated aluminum or other materials acceptable to local codes.

- The heater requires a direct vent terminating directly to the outside of the building.

- The exhaust vent will have been tested to meet Underwriters Laboratories, Inc. to UL1738 and ULC-S636.

- The system must use outside air for combustion. Ensure the incoming air is not contaminated by any potential source of fumes or chemicals.

- Avoid any dips or sags in horizontal pipe runs.

- Ensure vent piping is supported every four (4) feet (horizontal runs) or six (6) feet (vertical runs) or in accordance with local code requirements.

- Do not reduce the diameter of the vent piping.

- Ensure all vent connections are installed, properly connected, and sealed air tight per manufacturer's instructions.

- Any vent pipe seams should be installed so they are oriented on the top of Horizontal Pipe Runs.

- Slope exhaust piping towards the exhaust terminal with a 2% slope (1/4 inch per foot; 19 mm/ m) to ensure rain or any accumulating condensate near termination are drained.

- A condensate collector is required for this system when there is a vertical vent configuration. A condensate collection point should be installed on the vertical run

of piping just prior to the heater to ensure proper condensate drainage. Check with local codes for proper disposition and handling of condensate water, an air gaped

drain is usually required and in some cases a condensate neutralization system is also required.

- Do not store hazardous or combustible materials near the vent piping

- Ensure the air intake and vent termination points are at least 12” (300 mm) above any possible snow accumulation level. The flows must not be impeded by snow or debris.

- Ensure the air intake and vent termination points are at least 24” (600 mm) from any obstruction or other objects.

The exhaust pipe must maintain adequate clearances and be insulated with a fireproof material if it passes through walls made of flammable materials. Consult local codes and vent pipe manufacture documentation for proper material selection and installation requirements.

If the heater will be installed in a building that has a system that maintains a negative pressure, it is possible for a back-draft to allow outside air to be pulled into the heater while not in operation. This can create a situation where freezing might occur within the heater.

Please consult a professional for a properly designed venting solution or contact qualified technician for guidance.




1. Drill 2 small holes at the end of the air intake pipe.

2. Slide the pipe over the air intake terminal.

3. Using a level, ensure the pipe is straight up and down.

4. With self tapping screws, attach the pipe to the air intake terminal.

5. Apply a bead of silicone around the pipe and air intake terminal, ensuring an air tight connection.




1. Use manufactures universal Adapter to connect the vent pipe to the unit.

2. Then follow the Manufactures vent pipe assembly guidelines and standard vent

pipe location selection diagram below.

Please consult latest version of these standards to ensure installation is in compliance with current guidelines.

* For clearances not specified in ANS Z223.1/NFPA54 or CSAB149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.

** A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

*** Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.


Maximum Vent length

1. Determine the number of 90 degree elbows in the vent system (Two 45 degree elbows count as one 90 degree elbow).

2. Refer to below table to find the maximum vent length based on the number of elbows

Example: If you have one elbow, then your maximum vent length is 35ft (10.7m)


Vertical Terminations

The air intake requires a return bend or tow 90º elbows to prevent entry of rain.

The vent termination and air intake must be in the same pressure zone.

The Sediment Pre-Filter and Isolation Valve Kit images below are for visual reference only.
Not included with water heater and must be purchased separately.

These items are suggested only and not necessary for this unit to work properly.  

It is recommended that an inexpensive pre-sediment filter be install for your Marey tankless water heater. This will help capture debris or particles that would interfere with the operation and longevity of your unit.             We suggest that you flush your Marey Tankless water heater at least once a year with white vinegar. There are numerous Youtube videos that demonstrate the procedure. By installing an isolation valve kit to your Marey tankless water heater this makes the process much simpler.

For Marey YouTube Videos on Marey Tankless Water Heaters and for Installation and Trouble Shooting follow the links below.

How Tankless Water Heaters Work
Installation and Start Up


Please make sure you check out the Temperature Map and the Flow Rate Chart to determine which heater is right for you.
Follow the links below to download the PDF files to your computer.

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5 Year Limited Factory Warranty!


You have 30 days from your purchase date for any warranty returns for refund.

Marey Heater Warranty Program
Please note regardless when you register the unit your warranty will start from the purchase date.

Marey Heater Corp offer an industry leading 5 year all-parts warranty on all their tankless water heaters. Marey's heater warranty is comprehensive and covers all manufacturer's defects.
Marey warranty is only valid for units sold in the USA and Canada.

For warranty details visit Marey at: Marey Warranty



  • FREE Shipping to U.S. Mainland addresses only.
  • We do not offer free shipping to Alaska or Hawaii, however we do ship to those locations. Enter your zip code under the Shipping and Payments tab to get your rate.
  • We do offer International Shipping on this Item through the Global Shipping Program.
  • When product has been paid for, we will submit the order to be processed and shipped within 24 hours. Weekends and holidays are excluded. Shipping time may vary due to your requested delivery location.
  • Your shipment will originate from a warehouse nearest to your location if possible. Most items are shipped FedEx, USPS and UPS.
  • You will receive a shipping update email containing a tracking number. You may also find the tracking number of your order in the "My eBay" tab.
  • If your package arrives damaged, refuse the shipment and contact us. If the shipping company has left before you realize the package is damaged, contact us immediately. Concealed damages must be reported to the carrier within 24 hours of receipt.
  • All shipping and handling cost are non-refundable. If buyer provides incorrect address or refuses delivery, the original actual shipping cost will be deducted from any monies refunded.

Free Return Shipping only on MANUFACTURER DEFECTS within 30 days of purchase


30 Day Return Policy



Returns Happen, We accept returns on units that are in their original unused and uninstalled condition


To help us expedite your return please follow these instructions:


Contact us in advance for a RMA number (Return Merchandise Authorization)
Follow the detailed return instructions that we provide to you, which include the RMA# and shipping address to the Marey Customer Service Center in Miami, Florida.


You will then receive your refund after a Marey service technician inspects the returned product and has issued a credit memo.


Buyer is responsible for all shipping costs associated with the 30 day return, plus all returns are subject to a restocking fee. Refunds will not be issued on products that have been broken or damaged by customer!


Product defects are covered by Marey's 5 year Limited Warranty as verified by the manufacturer.


*Free Return Shipping only available on units with actually Manufacturer Defects.*


Buyers must consult with a Marey Service Technician first prior to any return request and the unit deemed to have documented factory defect.


Units not functioning properly due to "customer set up" DO NOT qualify as a manufacturer's defect. Other non qualifying reasons Including but not limited to the following:


1. Unit not properly sized for desired application.
2. Unit not recommend for geographic location.
3. Customer power supply not suitable for installation of electric units.
4. Customer ordering wrong fuel type.
5. Customer water pressure or flow rate not consistent with minimum requirements for unit to function properly.


Buyer agrees that by entering into a transaction for this item to be bound by the terms of the above return policy and acknowledges that this is a legal and binding contract.


Buyers attempting to get around the return shipping by claiming "Item Not as Described or Defective" will be reported.


Returned units that have been damaged by buyer will be subject to restock fee or possible rejection of return claim.

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We encourage our customers can leave their Feedback for us. It provides a confidence rating for future customers to see and know how they will be treated when they enter a transaction with us.

We also encourage those with questions to ask away.

It is a fact that anyone who is provided with enough information is capable of making an intelligent informed decision.

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Why Choose Marey

Why Marey Water Heaters? Because Marey has designed and manufactured water heater since 1955.
Why Marey? Because this unit is one of the newest point of use water heaters available from Marey.
Why Marey? Because we feel that everyone should have access to hot water and be able to cut their energy consumption at the same time.
SO, If you want a good quality point of use water heater with a 5 year all parts warranty, buy a Marey from us.


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This image is only a representation to illustrate how
gas tankless water heater work


Where does your money go?




All sales are final 30 days from purchase date.

  • Model: REFGA16LPETL
  • Shipping Weight: 40lbs
  • 1 Units in Stock
  • Manufactured by: Marey

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This product was added to our catalog on Thursday 15 December, 2016.