0020352608341

Rheem EcoSense

Model ECO150XLN3

Internet #203222963

Store SKU #1000509719

Store SO SKU #1000067427

6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater

$778.67 /each
  • No standing pilot means less wasted energy
  • Outdoor installation eliminates the need for venting
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.

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Product Overview

The Rheem EcoSense ECO150XLN3 Outdoor Natural Gas Tankless Water Heater can provide up to 6.4 GPM at a 35 Degree temperature rise. The 150,000 BTU Natural Gas Tankless Water Heater is designed to supply continuous hot water for up to 1 or 2 bathrooms at the same time. It heats water only when it's needed and has a 0.82 energy factor. This compact heater exceeds the requirements for many utility rebate programs. It comes with a remote digital thermostat that can be installed in almost any convenient area of the house. This heater's outdoor design requires no additional venting and features freeze protection to -30 Degree F. This model can be used at elevations up to 9,840 ft. above sea level. Please click the specifications to view the Rheem Brochure Guide which will help you in your buying decision to ensure that you purchase the right tankless water heater model for your household needs.

  • Outdoor tankless gas water heaters require no additional venting
  • A 6.4 GPM tankless water heater at a 35 Degree temperature rise can provide enough hot water to supply a 1-2 bathroom home
  • Tankless gas water heaters heat water on demand, saving energy compared to many standard gas tank-type water heaters
  • 12-year limited warranty on heat exchanger and 5-year limited warranty on parts
  • 0.82 energy factor meets or exceeds minimum energy efficiency standards
  • Remote digital display shows precise temperature setting and maintenance codes
  • Ability to link 2 like units together for high demand applications with the EZ-link cable (sold separately)
  • Hot start programming helps to minimize fluctuation in water temperature during periods of frequent on/off operation
  • High-altitude capability up to 9,840 ft. elevation about sea level
  • Environmentally friendly ultra low NOx burner meets SCAQMD rule 1146.2 requirements
  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Customer Questions & Answers

20 Questions21 Answers

Customer Questions & Answers

6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater
6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater

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2 answers

DO I NEED A DEDICATED 3/4" GAS LINE (SMALL STUDIO APT WITH GAS HEAT AND GAS STOVE)?

This question is from 6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater
Asked by
santa cruz, CA
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June 25, 2015
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Asked by
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December 14, 2015
Answer: 
No, you don’t have to have a dedicated gas line, but you will need to make sure your gas line has enough btu’s to run both appliances
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June 30, 2015
Answer: 
Yes, you will need a dedicated 3/4 standard gas line.
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1 answer

Can this heater be run on propane?

This question is from 6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater
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August 2, 2016
Example: I have looked at the manual and can't figure out what I did wrong.
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August 3, 2016
Answer: 
Yes but you would have to purchase it or order it as a propane unit.
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Can this be installed in the garage where the existing water heater tank is?

This question is from 6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater
Asked by
las vegas
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June 23, 2016
My water heater tank now, is inside of my garage. When it mentions installation for outdoor, is it talking about out of the actual house or can't be in the garage either?
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June 27, 2016
Answer: 
No, because this unit requires special venting for outdoors and needs to be installed outdoors.
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1 answer

The specs say that it has s 35 degree temp rise. What does the incoming water temp need to be to have good hot water?

This question is from 6.4 GPM Natural Gas Mid Efficiency Outdoor Tankless Gas Water Heater
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March 13, 2016
Installing in a cabin at 8000 ft elevation.
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March 14, 2016
Answer: 
The recommended setting for a water heater is 120F. The minimum temperature on this unit is 85F and the maximum temperature is 140F.
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Customer Reviews

Rated 4.4 out of 5 by 16 reviewers.
Rated 4.0 out of 5.0 by Hot Tub Heater This product is not advertised as a hot tub heater but I previously had a similar Rinnai heater which was 30 years old and eventually corroded out. The Rheem was the smallest heater that I could buy but seems to do a good job. I haven't had it long enough to know if there are any long term problems. Installation was "relatively" ease as this was a replacement. Only problem I see is that if I unplug the heater, I have to reset the temperature after I plug it in and turn on the remote again. March 31, 2016
Rated 5.0 out of 5.0 by Great Water Heter for the money Great product. Install was strait forward with no surprises. Do yourself a favor and get the install kit. Performance is amazing. We can take two long showers back to back and never run out of hot water. June 15, 2015
Rated 5.0 out of 5.0 by Great Water Heater!!! I bought this as a replacement for an electric tank water heater. I love having hot water on demand! With the old heater I would be lucky to fill my tub... but with the tankless I never run out of hot water. I installed the unit myself. I've never installed anything in my home myself before but I decided to give it a try this time. The directions were easy to follow. I had to install new gas line in my home and move the water lines and the electric wires outside to the heater myself. Yes i got permits and had my work inspected. Not having to also do the venting was a huge plus for me! The only downside for the install was that I had to buy a service valve kit separately and it wasn't cheap or available when I bought the water heater. I had to wait a couple weeks to order it. The wall mounted remote control that came with the water heater was easy to install and worked instantly and is easy to use. Once I had everything installed, I had hot water within 10 minutes. April 7, 2015
Rated 5.0 out of 5.0 by Excellent Tankless water heater Replacement. We had a less expensive unit that was very unsatisfactory. We are very pleased with this unit; no problems at all. February 23, 2016
Rated 4.0 out of 5.0 by Very good product It was very easy to install and simple to set up (water lines and gas hooked up; electrical connected to the unit and the thermostat set to 120; and vent space). It heats up quickly, therefore, little water would be wasted. I would highly recommend this product. January 12, 2016
Rated 5.0 out of 5.0 by Very good so far I did not do the work myself it look very easy to put in January 20, 2016
Rated 3.0 out of 5.0 by works great While the heater was delivered even faster than expected, we were very put off by the extra trips to hardware stores. not just the valve kit- that was expected, but gas line as well. Just really got ticked off when the instructions talk about making sure to install the water heater within 6 feet of an outlet....BUT THERE IS NO POWER CORD!!! Yet another trip to the hardware store. Also not very customer friendly when Home Depot has the water heaters in stock, but none of the valve kits or gas flex needed... To be honest, there were moments I regretted my choice to change my system over to a tankless. It's now up and running 3 days April 5, 2015
Rated 5.0 out of 5.0 by tankless water heater the only thing I didn't like about this water heater is the cost September 15, 2015
  • 2016-08-25 T14:32:12.733-05:00
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