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MAREY Gas 10L Digital Panel Tankless Water Heater review

MAREY Gas 10L Digital Panel Tankless Water Heater

If you are looking for the best tankless water heater for your home, you should consider the MAREY Gas 10L Digital Panel Tankless Water Heater. It does not operate by electricity but comes with an auto-ignition system that can be installed with ease. The MAREY Gas Tankless water heateris designed to work solely on gas as water passes through the unit.

It is designed to heat up within a very short time and can work even at a low-level pressure of water. It can supply up to 3.1 gallons of water in a minute once the faucet is turned on. In consideration of its weight, it is about 21 lbs with a size of 24” 14 “7.

Key features

2D cell battery and electric pulse ignition

This model is designed to use a 2D cell battery for its ignition and thus does not require electricity. The battery supplies the system with constant heat, which circulates in the unit. The ions in the system sense the flame and supply heat through a double ignition mechanism. The system is highly sensitive and convenient for operation.

Anti-freezing protection

The anti-freezing protection feature removes the water discharge valve to make way for the water in the pipes once the temperature is lower than the freezing point. This measure prevents the water in the internal pipes from freezing.

Auto cut-off protection

The automatic cut-off protection keeps the system on the alert to shut the gas supply if the flame becomes unbearable. This allows the system to run smoothly and saves energy.

Low-pressure startup

This system requires only 8PSI to fire up which is relatively low and is ideal if your water supply system has a low pressure, especially if you may desire to supply hot water to the upper floors. You should ensure that the system has enough water flow to prevent it from overheating and consequently shutting down.

Safe and clean

Rust does not easily build up in the system, this allows you to use the water for any purpose. This system guarantees you of a fresh and safe water for bathing and cooking especially in places where there is no access to clean and potable water.


  • A fast flow rate of 3.1 GPM
  • Works with either propane or liquid gas but you’ll use a conversion kit
  • Digital display of temperature
  • Easy to install courtesy of a compact design
  • Operates without electricity
  • Gas is used only when the water flows
  • It is eco-friendly since it uses a natural source of energy in heating water


  • Requires much air clearance during installation and is not ideal for small sized apartments.
  • The system could be damaged by improper venting.

Frequently Asked Questions

Can this unit be converted to use propane with an additional purchase of an orifice?

Yes, it can be done.

How long of double wall z vent do you need for an installation?

Where the 10L is mounted on an exterior wall and you are venting horizontally by the wall it will require a pipe of length from the angle to the side of the wall. In a case that your vent is to the roof, then your pipe will be from the 10L to the roof.

If I replace a 40-gallon tank Natural gas water heater with this, will the gas connection be sufficient?

It depends on the number of bathrooms in your apartment. In a family of 4 with a single bathroom, the system runs very efficiently.

What is the size of the flue?

ndard size of 4”.

How many bathrooms can this unit serve at a time?

This unit is designed to handle only a single bathroom at a time.

What is the BTU?

The capacity of the BTU is rated based on the tankless water heaters. As the name implies, tankless water heaters do not hold water as compared to conventional water heaters with storage tanks. Residential home models of tankless water heaters have a BTU capacity of 150,000 BTU and above.


If you require an energy saving tankless water heater for your home, then the MAREY Gas 10L Digital Panel Tankless Water Heateris for you. The unit operates without electricity and can be installed anywhere in the apartment. It is designed to work efficiently with one bathroom in a sizable household. The digital display panel allows you to know the output temperature of the water.

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