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10 Best Tankless Water Heater Filters And Their Reviews For 2022

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Tim Rhodes

The following list discusses the best options if you are looking for the right tankless water heater filter system for your personal use.

The increasingly industrializing world that surrounds us is continuously interfering with our daily lives and is posing a greater threat to our health with each passing day.

The industries operating around us with little to no concern about the health of the planet and its inhabitants are dumping tons and tons of toxins into the air, land, and water which are a crucial element for life to exist.

In these hostile conditions the air that we breathe, the food that we consume, and the water that we drink are all contaminated.

As a result, the technology and equipment used for the purification of the things that we consume have improved immensely, especially the water purification equipment.

The latest innovation in water filtration systems is tankless water heaters.

These tankless water heaters are extremely energy efficient and can provide a continuous supply of hot water and they also take up far less space than other water filtration systems.

Most of the water heating systems have inbuilt filtration to remove many of the harmful impurities like lead, iron, nitrates, and cadmium that contaminate our water.

Furthermore, the tankless heater filter also removes all the bacteria and other organisms that contaminate the water by heating it and making it even safer.



Last update on 2023-12-16 / Affiliate links / Images from Amazon Product Advertising API

10 Best Tankless Water Heater Filters Reviewed

The tankless water heater filters also are an amazing choice as they are sure to provide an uninterrupted and constant hot water supply, some of the best available options are listed below.

1. Takagi Natural Gas Indoor Tankless Water Heater

Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per...

Takagi T-H3-DV-N tankless water heater is best suited for larger households as it has a very effective and fast heating system while also being very energy efficient.

The highlighting feature of Takagi T-H3-DV-N tankless water heater filter system is that it operates on natural gas and is extremely energy efficient and provides an on-demand hot water supply without ever running out.

The water heater filter can continuously heat more water due to its sophisticated heating system and tankless design.

This tankless water heater filter can produce up to 10 gallons of hot water per minute.

It’s perfect for multiple use points and the users never have to worry about running out of warm water as it ensures instant and on-demand cold water heating.

This water heater filter also has a longer life when compared to other tankless water heater filters as it operates on Natural gas rather than electricity which leaves behind little to no point of failure for the device.

It also has integrated computerized safety features that make sure that it never overheats or runs dry and damages itself.

It comes in a compact package and is very good for space-saving and can easily be set up indoors.

Pros & Benefits:

  • Extremely energy efficient
  • Works on natural gas
  • Endless and uninterrupted hot water supply
  • Computerized safety features
  • Very good for multiple use points

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2. Rheem RTEX-18 Residential Tankless Water Heater

Rheem 18kW 240V Tankless Electric Water Heater

Rheem RTEX-18 is the best fit for small and medium households with two to three water usage points.

It’s an electric residential water heater filter system that provides a water supply of 4.4 gallons per minute which makes it a very good option for people who want around the clock hot water supply.

This water heater filter’s tankless design ensures continuous water supply and on-demand and instant heating.

This tankless water heater filter features a digital adjustable thermal controller and an on face digital temperature reader for the convenience of users.

It makes it super easy to set the temperature according to the user’s requirement.

It incorporates highly durable copper heating elements which allow for a long-lasting and dependable lifespan and also makes it highly energy efficient.

Its functional and space-effective design makes its installation extremely simple and easy.

Pros & Benefits:

  • Adjustable thermal controls and energy usage
  • Copper heating elements for efficient energy consumption
  • Very simple installation
  • Good for multiple use points
  • Functional and space-saving design

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3. Rinnai V65IN Tankless Water Heater

Rinnai V65iN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation

Rinnai has a hundred years’ long history of providing its customers with the best quality products and is a highly trusted brand among the masses.

Rinnai V65IN is an indoor water heater system that operates on natural gas and is very efficient and sustainable when compared to older tank heating systems.

The water heater filter provides an on-demand and continuous hot water supply for a small to medium household as it can supply up to 6.5 gallons of hot water per minute, so you never have to worry about running out of hot water.

The advanced technology and smart heating system of these tankless water heaters make sure that you never have to wait or wastewater to get the luxury of hot water.

The water heater circulates water through all your water pipes to supply instant water whenever needed.

It comes in a small package that is extremely space-effective and water heater can easily be installed in any place, even in a closet, which would be a shame as it has a very sleek design.

The high-quality heating elements of this water heater filter makes it extremely energy-efficient and minimize CO2 emissions.

These tankless water heaters can also be controlled via mobile app Control-R 2.0, as it’s WiFi ready which enables the users to remotely set timers, create schedules, and put the heater into vacation mode whenever needed from a far off location.

Rinnai also provides a very extensive and well-rounded warranty plan for its customers which includes a 10-year heat exchanger warranty and a 5-year parts warranty which makes it one of the most unique options available.

Pros & Benefits:

  • The mobile application enables remote controls
  • Extreme energy and water efficiency
  • Extremely good warranty plan
  • High-quality components
  • Good for multiple use points

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4. Ecosmart POU 3.5 Electric Tankless Water Heater

Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch

Ecosmart POU 35 is a super-compact tankless water heater system that is perfect for apartments and single sink usage.

The integrated high-quality copper and stainless steel components of these tankless water heaters make it highly durable and energy-efficient and the components and heating elements are also easily replaceable if need be.

As it’s recommended for a single-use point its energy efficiency is unmatched and its ability to supply consistent and instant hot water makes it a great option for apartment-style living spaces.

Ecosmart POU 35 also features face thermal reading for ease of the users.

Ecosmart is also available in larger sizes for multiple use points to best fit the user’s requirements.

Pros & Benefits:

  • Super compact size
  • High-quality components and easy replaceability
  • Digital temperature display
  • Extreme power efficient
  • Best for single or multiple use points depending on the models

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5. Titan N-120 Electric Tankless Water Heater

Titan Electric Tankless Water Heater

Titan N-120 is the best tankless water heater filter for most average size homes due to its systematic ability to heat up and provide an endless supply of hot water.

The capability of the water heater to provide on-demand hot water only when it’s needed makes it very energy efficient.

It can create savings as much as 60 percent due to its smart heating abilities to heat the water only when required by the user and you will notice a decrease in your bills.

With Titan N-120 tankless water heaters you don’t have to worry about ever running out of hot water due to its tankless design and very efficient heating system.

The water heater features thermal control for users to set the temperature of water according to their requirements.

This water heater gives the users the ability to choose from four different levels of temperature control ranging from low, low medium, high medium, and high.

It has a compact and industrial design which makes these tankless water heaters very easy to install.

Pros & Benefits:

  • Very energy efficient
  • Different levels of thermal control
  • Easy installation due to industrial design
  • Endless hot water supply
  • Very good for multiple use points

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6. Marey GA10LP 10L Propane Gas Tankless Water Heater

MAREY GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater, Liquid, White

Marey GA10 tankless water heaters comes in two variants one that operates on liquid Propane and another one that operates on Natural gas.

These tankless water heaters are best suited for a family home due to its tankless heating system that is capable of providing a steady flow of hot water to multiple points of use.

The water heater provides a steady flow of hot water on demand instantly whenever it’s needed and it can heat up and provide up to 3.1 gallons of hot water per minute.

Marey GA10 features best in class temperature controls for convenience of the users and it also gives its user the ability to control the input water flow and gas for optimal temperature controls.

It has a compact design, it’s super easy to install and the water heater can fit almost anywhere.

Marey GA10 is perfect for those who like to install and set up things themselves, it also includes a step by step guide for installation so the users can be rid of any third party installation charges.

Also as the water heater operates on gas, it can save up a lot on your electricity bills and is an amazing choice for areas that experience frequent power outages.

This water heater filter is also very conservant in its gas consumption and gives full control of the input to its users thus making these tankless water heaters very energy efficient.

Its other highlighting features are that the manufacturing of these tankless water heaters ensure a rustproof design and no water is lost due to any leakage.

Pros & Benefits:

  • Rustproof and leak-proof design
  • Long 5-year warranty
  • Great energy savings
  • Water and gas input controls
  • Very good for family homes and multiple-use points

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7. Eemax EEM24013 Electric Tankless Water Heater

Eemax EEM24013 Electric Tankless Water Heater, Blue

Eemax EEM24013 tankless water heater is best suited for small residential or commercial heating needs, it’s good for up to two use points but in an area with colder temperature, it’s recommended for a single-use point.

The highlighting feature of Eemax EEM24013 tankless water heater is that it incorporates the most advanced self-modulating technology.

In layman’s terms, it means that the unit will adjust how much energy it needs to consume based on how much water needs to be heated.

This water heater is extremely power efficient as it only heats the water that you need, when you need it and can provide huge savings for the user.

It also features a dial for tremendously precise temperature adjustment as per the requirements of the users, along with a digital temperature reader on the face as well.

Due to its tankless design, the water heaters ensure an instant, consistent, and endless water supply.

The stainless steel components of these tankless water heaters and highly advanced manufacturing process guarantee rustproof and contamination-free water supply.

Eemax also lays out a 5 year-long leakage warranty and 1 year long parts warranty on its water heaters.

Pros & Benefits:

  • Very good design and construction
  • Most advanced energy-saving system
  • On face thermal controls and temperature reading
  • Good warranty plan
  • High-quality internal components

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8. Camplux TE11 Residential Water Heater

Camplux Electric Tankless Water Heater 11kW, On-Demand Water Heaters 240V, Instant Electric Water...

Complex TE11 water heater filter is a very sleek and modern tankless water heater system that has been developed by years of experience to fit in your modern-day houses with style.

Its state of the art manufacturing process and high-quality stainless steel components guarantee long-lasting durability and power efficiency.

The tankless design and high-quality heating pipes of the water heaters ensure a continuous and on-demand heated water supply while making huge savings due to its smart power consumption.

Along with Camplux TE11 also comes to a remote controller which is very handy to set temperatures according to the user’s need.

It also makes the water heater very useful as it saves your favorite temperatures and can easily apply them by a single press of a button.

While being sleek and modern the water heater is also very compact and doesn’t take up a lot of your valuable space, along with that it has multiple mounting angles to facilitate the users to mount it wherever and however suits them.

It also comes packed with tons of safety features and an on face touch controls for temperature adjustments and a digital display for temperature information.

Pros & Benefits:

  • Very modern and sleek design
  • Multi mounting angles
  • Smart remote controller
  • On face touch controls
  • Jam-packed with safety features

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Have you ever been camping or staying at a cabin with no hot water?

If yes, Eccotemp L10 water heater filter is for you, it’s designed for outdoor use and its heating system uses liquid Propane which can easily be carried to a camping site or a cabin on the hills in a gas cylinder.

With Eccotemp’s weatherproof rain cap design, it’s perfect for outdoors and is super easy to use and set up.

This water heater filter comes with all the necessary parts needed for a seamless outdoor usage like a chrome showerhead and a stainless steel hose.

All you need a gas cylinder and a garden hose to connect a water input and you’ll be sure to have instant heated water wherever and whenever you need it.

While it has pressure activation, the water fitler also has great safety features like an automatic safety shutoff timer.

Whether you like to camp in the mountains, stay by the lake, or like to be in solitude in a cabin in the woods Eccotemp what you need for a constant and on-demand luxury of warm water.

Pros & Benefits:

  • Amazing for outdoor use
  • Compact, solid and waterproof design makes it easy to carry
  • Super easy to set up
  • No power connection needed
  • Good safety features

10. Stiebel Eltron DHC-E12 Tankless Electric Water Heater

Stiebel Eltron 230628 DHC-E12, White

Stiebel Eltron makes many models of different sizes for different use cases but the Stiebel Eltron DHC-E12 is the best tankless water heater that they manufacture.

It’s a perfect tankless water heater for multi-point usage and it’s feature-packed with the latest and greatest technology and has the highest quality components to make sure of long and reliable experience for the users.

Stiebel Eltron DHC-E12 sleek and compact design tankless heaters makes it easy to place anywhere the user would like without the worry of concealing it.

It features highly advanced self-modulating technology which makes it extremely energy efficient.

It also has a temperature adjustment dial on the front cover that is capable of making micro-adjustment to the heating according to the user’s needs.

Along with its copper components that ensure a long and reliable lifespan its advanced microprocessor technology ensures a constant temperature even if the water flow rate varies.

Stiebels 3-year parts warranty gives the users peace of mind and makes it a unique choice in the tankless water heating market.

Pros & Benefits:

  • 3 year long parts warranty
  • Latest technology for consistent and reliable water
  • Temperature adjustment dial for micro-adjustments
  • Sleek and compact design
  • Very good for multiple use points

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Do Hot Water Heaters Have Filters?

Filters are necessary for tankless heaters.

When the hard water is heated, many heavy minerals and other contaminants lead to scale buildup in the pipes of the the tankless heaters.

Also, dust and other grime may enter the exhaust system of the water heater, leading to lesser airflow within the heater; which in turn, may reduce the capacity of the heater.

To prevent scale build up, it is advisable to have a whole house water filter installed, which will help remove the contaminants from the water entering your tankless heater.

Final Thoughts

Municipal water that we use in our day to day life has many impurities in it due to the consistently growing pollution around us.

These impurities have a huge impact on our health and when paired with any existing health conditions the results can be disastrous.

This is where water filtration systems come into play and the tankless water heater filters are one of the best choices available on the market.

Most of them have integrated impurity filters to filter out harmful materials and over that, they also heat the water to kill the remaining germ, bacteria, and other organic contaminants.

There are tons of varieties available in the market for different people with different use cases and needs.

While all having the same purpose of providing clean, safe, and hot water, all the available options are unique in their rights from being best for a single point of use to ones that a good for an entire family home.

From having very sleek and eye-catching designs to very industrial and practical looking ones, from electric to gas-operated systems, there exists a choice for everyone.

Whether you’re in the market for a small tankless water heating system for a single sink or looking for one that can provide safe.

Hot water for an whole house, these are the 10 best options available out there.

Do you know of one that we may have missed?

Let us know down in the comments.

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