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Top 10 Best tankless water heaters Buyer’s Guide 2019

If you are looking for top quality Best tankless water heaters, read the detailed reviews on top 10 Best tankless water heaters before buying. Click here to read more.

We spent 44 hours to find a best option for you is a EcoSmart Eco 27, which comes with amazing features you’ve never heard before. It is the Best tankless water heaters available in the market today. However, if you don’t want to spend big on tankless water heaters, then you should absolutely go for Stiebel Eltron Tempra which comes with all the basic features one could expect in tankless water heaters.

To help you in your search, we have completed this list of the Best tankless water heaters.

Top 10 Best tankless water heaters 2019

Rank
Manufacturer
Product Name
Score
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1
EcoSmart ECO 27 Electric Tankless Water Heater 27 KW at 240 Volts 112.5 Amps with Patented Self Modulating Technology EcoSmart
9. 7
2
Stiebel Eltron Tempra Plus 36 kW tankless electric water heater with Self Modulating Power Technology  Advanced Flow Control Stiebel Eltron
9. 5
3
Takagi T KJr2 IN NG Indoor Tankless Water Heater Natural Gas TAKAGI
9. 1
4
Camplux 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater CAMPLUX ENJOY OUTDOOR LIFE
8. 8
5
Eccotemp FVI12 LP Liquid Propane Gas Tankless Water Heaters White Eccotemp
8. 6
6
Sio Green IR288 POU Electric Tankless Water Heater   Infrared Tank Less Instant Hot Water Heater   Cost Effective  Corrosion Free   No Lime Scale No Algae No Bacteria   220v   240v  40A  9kW Sio Green
8. 2
7
Takagi T H3 DV N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater 10 Gallon Per Minute TAKAGI
8. 0
8
Rheem 240V Heating Chamber RTEX 13 Residential Tankless Water Heater Rheem
7 .7
9
Rheem RTG 84XLN 8.4 GPM Low NOx Outdoor Tankless Natural Gas Water Heater Rheem
7. 4
10
Rinnai RUC80iN Ultra Series Natural Gas Tankless Water Heater Concentric or Twin Pipe Installation Rinnai
7. 2

1. EcoSmart Eco 27.

Ideal for smaller families who don't expect to have more than two showers running at any given time, the EcoSmart Eco 27 can heat up to three gallons per minute and comes in at a budget-friendly price. It can save you up to 50% on water heating costs.

  • Digital display panel
  • Not ideal in extremely cold climates
  • Durable steel and copper components

2. Stiebel Eltron Tempra.

The compact Stiebel Eltron Tempra has a slim, sleek design that is about the size of a briefcase. This unit has advanced flow control even when multiple showers are running, and a hinged cover that offers quick access to the internal components if needed.

  • Runs on electricity
  • Maintains a steady temperature
  • Does not require venting

3. Takagi T-KJR2.

The Takagi T-KJR2 runs on natural gas and is intended for indoor installation only. It has a 6.6 gallon per minute flow rate, which makes it ideal for radiant heat applications or smaller homes where hot water will be used in multiple locations simultaneously.

  • Relatively easy to self-install
  • Has altitude settings
  • Need to purchase a vent separately

4. Camplux 5L Portable.

The convenient Camplux 5L Portable was designed especially for outdoor living. Low water pressure isn't a problem for this unit as it can function with as little as 2.5 PSI. It comes with showerhead and water hose attachments, and has a fold-down handle for easy carrying.

  • Anti-freeze protection
  • Battery operated ignition option
  • Can be installed indoors

5. Eccotemp FVI.

The Eccotemp FVI only runs when you need it, effectively saving you money at all times. It is perfect for a small house or vacation cabin, where the need for hot water is either infrequent or low in volume and you don't expect more than two showers to run together.

  • Sleek housing has a small footprint
  • Makes a noticeable humming noise
  • Includes a stainless steel vent kit

6. SioGreen IR288.

The moderately priced SioGreen IR288 is designed to be connected near the shower or sink and utilizes a long-lasting quartz heating element. It is a smart choice if you don't want to deal with the hassle and expense of installing a whole house unit.

  • Requires professional installation
  • Corrosion-resistant
  • Does not leave limescale deposits

7. Takagi T-H3.

With an output of 10 gallons per minute, the Takagi T-H3 is powerful enough to send hot water to three bathrooms in cold climates and four bathrooms in warmer climates, so you'll never wind up taking a cold shower, even if the kids and wife hit the bathroom first.

  • Requires a separate valve kit
  • No pilot to keep lit
  • Very expensive but high quality

8. Rheem RTEX-13.

With an on-unit rotary thermostat and digital LED screen that displays the exact temperature, the Rheem RTEX-13 is an easy to use option. The temperature is adjusted in one degree increments and the unit can be hooked up to any standard 1/2" water connection.

  • Fast hot water response time
  • Only raises water temp 40 degrees
  • Best for point-of-use installation

9. Rheem RTG-84.

The Rheem RTG-84 is perfect for outdoor installations in cold climates, as it offers freeze protection down to as low as -30 degrees Fahrenheit. It has a 0.4 gallon-per-minute minimum activation flow rate and features next generation burner technology.

  • Low nitrogen oxide emissions
  • Runs on propane
  • Eligible for federal tax credits

10. Rinnai Ultra Series.

The versatile Rinnai Ultra Series runs on either natural gas or propane and provides hot water up to 140 degrees. It can be converted for commercial usage and meets nitrous oxide emissions standards for both California and Texas.

  • Causes small dip in water pressure
  • Operates very quietly
  • Pressure relief valve