5 Best Tankless Water Heaters in 2023

We tested different Tankless Water Heaters on the market today and came to agree that Stiebel Eltron Tankless Water Heater and EcoSmart ECO 27 Electric Tankless are the Best Water Heaters in 2023.

Review Of 5 Best Tankless Water Heaters in 2023:

#1-CHOICE: Stiebel Eltron Tankless Water Heater:

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DESCRIPTION:

The Stiebel Eltron is a sleek and portable endless hot-water heater designed to cater for your whole house. This device features an Advanced Flow Control that automatically maintains water temperature for constant comfort and can even reduce flow slightly if hot water demand exceeds capacity. Additionally, this water-heater is Eco friendly whereby it will save energy with auto-modulation coupled with the ability to electronically measure water flow. On the other hand, this unit is very easy to operate since it features Electronic flow sensor switches on the powerful solid copper interior heating system and it also noise-free when in use while the digital temperature display and preset temperature memory buttons facilitate for easy control and monitoring. Lastly, this device provides an output water temperature of 86˚ to 140˚F while ensuring that your hot-showers never get interrupted again.

KEY-FEATURES:

Advanced Flow Control.
Totally silent operation.
A digital temperature display.
Electronically measure water flow.
Preset temperature memory buttons.
It has a small, sleek and compact design.
Automatically maintains water temperature.
This specific model uses 24kW and 240V/208V.
Offers an output water temperature of 86˚ to 140˚F.
German patented technology invented by Stiebel Eltron.
Eco friendly unit that saves energy with auto-modulation.
Reduce flow slightly if hot-water demand exceeds capacity.
Requires a minimum household electric service of 150-Amps.
Electronic flow sensor switches on the powerful solid copper interior heating system.

#2-CHOICE: EcoSmart ECO 27 Electric Tankless Water Heater with Patented Self Modulating Technology:

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DESCRIPTION:

The ECO 27 is one of the largest electric tankless water heaters available that is equipped with patented self modulating technology. This unit is capable of heating nearly 3-gallons per minute and it can handle up to two showers running at the same time and never runs out of hot-water. In fact, this water-heater is just perfect for a high demand of hot water between multiple applications and can increase hot-water production up to 6-gallons per minute. On other hand, this device features a digital temperature control which allows for easy setting of temperature in increments of 1-degree between 80°F-to-140°F. It will also only turn on when you need hot water hence saving you up to 50% in water heating costs. Lastly, this tankless water-heater is compact and features a wall-mounted design in-order to free up floor-space.

KEY-FEATURES:

Endless hot water supply.
Activation Flow: 0.3-GPM.
Pipes fittings: 3/4 inch NPT.
Compact and wall-mounted design.
Save up to 50% in water heating costs.
Only turns on when you need hot water.
Recommended Electrical Panel: 200-Amps.
Digital temperature control in 1-degree increments.
Uses the most advanced self-modulating technology.
Warms water between temperatures of: 80°F-to-140°F.
Made of copper & stainless components for maximum efficiency & durability.
Electrical requirements: 27 kW, 240 volts, (3) 40-amp required breakers, 112.5 maximum power (AMP), (3) 8-amp required wire & Amperage Draw of: 113-A.

#3-CHOICE: Rheem RTEX-18 Residential Tankless Water Heater:

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DESCRIPTION:

The Rheem Heating Chambers RTEX-18 is a Residential Tankless Water Heater that offers continuous hot water quickly and on demand for single point-of-use or multiple applications. This unit features an external digital thermostatic control that allows for easy adjustment of temperature in 1-degree increments while the integrated LED-display lets you see the current temperature level. On the other hand, this endless water heater is equipped with one of the most advanced self-modulation system that adjusts power to meet hot water demands while the durable copper immersion two heating elements regulate heat-levels and are field Serviceable. Lastly, this device features a flow-rate of up-to 4.4-GPM and its very simple to install with bottom 3/4 inch NPT water connections.

KEY-FEATURES:

It uses 240-volts of power.
LED display (+/1 degree accuracy).
External digital thermostatic control.
Lightweight & portable at 8.5 pounds.
Most advanced self-modulation system.
It features a Flow Rate of up to 4.4-GPM.
This device is threaded for easy replacement.
Has a water-consumption capacity of 7-gallons.
Durable Copper immersion two heating elements.
This device is field Serviceable for easy maintenance.
Simple installation with bottom 3/4 inch NPT water connections.

#4-CHOICE: Eemax EEM24027 Electric Tankless Water Heater:

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DESCRIPTION:

The Eemax EEM24027 is an Electric Tankless Water Heater designed to provide a continuous Supply of hot water and it only heats water when you need it. This water-heater also uses the most advanced self-modulating technology which allows the device to adjust energy-levels basing on how much hot-water is needed. Additionally, this device features a compact size and features a water consumption level of 5.3-GPM.

KEY-FEATURES:

Uses Self-modulating technology.
Instant endless hot water device.
It uses 240-volts and 27 kilowatts.
A water-consumption level of: 5.3-GPM.
Provides continuous Supply of hot water.
Lightweight & Compact size that saves space.
Only heats the water you need & when you need it.
Can be used for any of your residential or commercial water heating needs.
Can produce enough hot water for up to 4 Showers or sinks simultaneously in warmer climates.
Can produce enough hot water for up to 1-shower and 2-sinks simultaneously in colder climates.

#5-CHOICE: Eccotemp i12-NG Tankless Water Heater:

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DESCRIPTION:

The Eccotemp i12-NG Tankless Water Heater features a sleek black glass casing, fully automatic temperature controls for precision, a touch-screen and LCD temperature display which shows output temperature as well as GPM-flow. This device is a natural gas fired, indoor model designed for small-to-medium hot water production and its rated at an impressive 3-GPM making it perfect for use in vacation cabins, cottages and smaller homes. On the other hand, this water-heater comes with a horizontal stainless steel vent kit for easy installation coupled with a 120-volt power cord for powering-up the internal exhaust fan and digital display while the sleek and modern design with a Gorilla glass casing and Child locking technology makes it safe for use in any home. Lastly, this water-heater features a safe electronic ignition system with fully-independent gas and water controls coupled with a fully automatic temperature and water flow adjustment.

KEY-FEATURES:

Child locking technology.
Safe Electronic ignition system.
It features 1/2″ NPT water fittings.
Features a sleek black glass casing.
Manual water temperature controls.
Fully independent gas and water controls.
Uses gas only when hot water heating is on.
Rated at an impressive 3-GPM flow capacity.
Fully automatic temperature controls for precision.
Requires standard household 120-volt electric outlet.
Fully automatic temperature and water flow adjustment.
Power ventilation for safety, efficiency & venting options.
Perfect for use in vacation cabins, cottages & smaller homes.
Comes with a horizontal stainless steel vent kit for easy installation.
Natural gas-fired, indoor heater for small to medium hot water production.
A 120-volt power-cord for powering the internal exhaust fan & digital display.
Features UL listed electrical components that are Field tested to 5500-ft elevation.
Touch-screen & LCD temperature display that shows output temperature and GPM-flow.
Hot water capacity range: 0.6-to-4.8 GPM Maximum / Minimum gas rate: 25,000-to-80,000 BTUs.
It only uses about 2-watts when idle & 1.07-Amps during operation thus making it energy efficient.
Offers a 35-to-40 degree Fahrenheit temperature rise when operating at a flow-rate of 3-GPM & a 77-degree Fahrenheit temperature rise at 1.5-GPM.

CONCLUSION:

All the features electric and gas powered tankless water heaters are designed to provide instant & endless hot water on both showers and sinks in 2023.