Best 16 Tankless Water Heaters 2023 Reviewed - Buying Guides & Reviews by Consumer Reviews Report

Top Picks

Best Overall: Rinnai RU199iN Condensing Tankless Hot Water Heater

Rinnai’s RU199iN Condensing Tankless Hot Water Heater provides a sleek, modern look for any space. This 11 GPM water heater is energy-efficient and easy to operate thanks to its built-in gas generator. Plus, its natural gas source means you can save money on yourenergy bills.

Best Budget: EcoSmart ECO 11 Electric Tankless Water Heater

The EcoSmart ECO 11 Electric Tankless Water Heater is simple, easy to use and efficient. It uses patented self-modulating technology to keep your water heated even when there's no electricity available. Plus, it comes in two sizes for largest spaces or the smallest apartments.

Best Value: Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater

The Rinnai RL94iN is a 9.4 Gallon tankless water heater that has been designed for use in indoor installations up to 9.8 GPM. This unit features a gas-powered turbine that will provide très chaud (very warm) water temperature when needed, without the need for any supplemental heaters or heating coils.

Editor's Choise: Rheem RTEX-24 24kW 240V Electric Tankless Water Heater

The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is a powerful and efficient water heater that can heat up to 5.9 GPM. It comes with the self-modulating power control that makes it easy to set your desired flow rate. Plus, its bottom 3 4" NPT connections make it easy to connect to your water source.

Compare Products

Showing 1 - 10 in 16 results

RANKING LIST | SORT BY SCORES

Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation

View on Amazon

SCORE
9.2
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Rinnai

Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream more

Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM

View on Amazon

SCORE
9.0
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Rinnai

Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region more

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 7-Gallon (ES8) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted

View on Amazon

SCORE
9.0
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Bosch Thermotechnology
Prime

INSTALLED VERTICALLY OR HORIZONTALLY: This larger model can be mounted vertically (5.1 gal. of water supply) or horizontally (7 gal. of water supply)- vertical orientation is installed with the cold and hot lines on top of the unit
EASILY MOUNTED: Can be shelf or floor mounted. Wall mounting available in vertical orientation only (water connections on top) - bracket included. Simply tap into the cold water line and install the water heater directly at the sink to provide hot water more

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
EcoSmart
Prime

Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution more

EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
EcoSmart
Prime

75 A
Save up to 60% on your water heating costs with the most advanced, self modulating technology available more

Rheem 11kW 240V Tankless Electric Water Heater

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Rheem
Prime

On demand, consistent and continuous hot water
11kW Model Flow Rate: up to 2.68 GPM more

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Rheem
Prime

24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
ON/OFF Dial Control with adjustable digital temperature display more

Seeutek Portable Water Heater 1.6GPM/6L, Outdoor Propane Gas Tankless Water Heater, On Demand Water Heater for RV Camping, Instant Hot Water for Shower Overheating Protection White

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
Seeutek
Prime

🏝️Excellent Performance:【Instant hot water】: Instant and continuous supply of hot water whenever you need it.【High efficiency and energy saving】: It has two combustion modes in summer and winter, and both the heat exchanger and the main burner adopt the most advanced energy-saving combustion technology, which can reduce gas consumption and noise while ensuring the continuous supply of hot water.
🏝️Reliable After-sales Service: As long as you buy our products, we will be responsible for your products! If you have any questions, please feel free to contact our customer service, we will solve any product-related problems for you. more

MAREY GA24CSALP 8.34GPM, High Efficienty, CSA Certified, Residential Multiple Points of Use Liquid Propane Gas Tankless Water Heater, White

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
MAREY
Prime

Anti-Freeze Protection
DOE more

Marey ECO150 220V/240V-14.6kW Tankless Water Heater with Smart Technology, Small, White

View on Amazon

SCORE
8.8
AI Score

The product rating scale from 0-10 is automatically analyzed by us based on Bigdata. This score is assessed objectively from our customer data, it does not have any relationship with suppliers, agents or other selling websites.
Brand
MAREY
Prime

Tankless water heaters provide an efficient hot water solution eliminating the stand-by energy consumption of conventional tank units
Flow switch activation mechanism allows the unit to produce constant temperatures with as little as . 5Gpm/5Psi more

Last update on 2023-03-21 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

2 ratings

FAQs

What is the downside of a tankless water heater?

There are a few potential downside of tankless water heaters. For one, they can only heat so much water at a time. This means you may need to refill the heater more often than you would with a traditional water heater. Additionally, some people have found that the tanks on tankless water heaters can start to fill up quickly, which can lead to a loss in heating power.

What is the life expectancy of a tankless water heater?

The life expectancy of a tankless water heater is typically up to 20 years with proper yearly maintenance.

Is it worth switching to a tankless water heater?

There are pros and cons to switching to a tankless water heater. Some people feel that tankless water heaters are more efficient, as they use less energy to heat the water. Additionally, tankless water heaters can be more expensive than traditional water heaters.

Can bacteria grow in tankless water heater?

No, bacteria cannot grow in tankless water heaters. Tankless water heaters use less water so there is more opportunity for bacteria to grow and cause problems.

Conclusion

In conclusion, tankless water heaters are a significantly smaller and more efficient option when it comes to heating water. They are perfect for small homes or apartments, as they can be installed quickly and easily.