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Rheem EcoSense

Model # ECOH160XLN

Internet # 203404944

8.4 GPM 157,000 BTU Ultra Low NOx Natural Gas High Efficiency Outdoor Tankless Gas Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$1,130.63 /each



Model # ECOH160XLN

Internet # 203404944

Store SO SKU # 1000067464

The Rheem EcoSense 8.4 GPM 157,000 BTU Natural Gas Condensing Tankless Water Heater offers a reliable source for a variety of residential hot-water applications. It is highly energy efficient and features a durable 157,000 BTU burner that heats water only when it's needed. This Outdoor, tankless water heater is rated for Ultra low NOx emissions and features an overheat limiter for safe operation. It is Energy Star qualified for enhanced energy and cost savings. Please click the "More Info" tab and then "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 number based on your application support type and demographic area for water temperature.

  • Outdoor tankless gas water heaters require no additional venting
  • A 8.4 GPM tankless water heater at a 35° temperature rise can provide enough hot water to supply a 2 to 3 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
  • 0.92 energy factor meets or exceeds minimum energy efficiency standards
  • Remote digital display shows precise temperature setting and maintenance codes
  • ENERGY STAR qualified to meet or exceed federal guidelines for energy efficiency
  • Ability to link two like units together for high demand applications with the EZ-link cable (sold separately)
  • Up to 94% efficient - lowest operating cost

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Vent diameter (in.) 
Water Connection Size (in.) 
Automatic Shut-off 
Finish Family 
Flow Rate @ 35 F Rise (gallons/min) 
8.4 gal (US)/min 
Flow Rate @ 45 F Rise (gallons/min) 
6.6 gal (US)/min 
Fuel Type 
Gas Connection Size 
Gas Product Type 
Commercial & Residential 
Gas Type 
Natural Gas 
Gas Type 
Natural Gas 
Maximum Temperature (F) 
Minimum Activation Rate (gpm) 
Minimum Temperature (F) 
Pilot Light 
Product Weight (lb.) 
82 lb 
Residential/Commercial/industrial Use 
Residential or commercial 
Total BTU 
157000 Btu 
Vent Type 
Single Wall 
Water Connection Location 
Water Heater Features 
Ultra LoNox 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,CSA Listed 
ENERGY STAR Certified 
Labor Warranty 
1 Year 
Part Warranty 
5 Year 


Rated 4.0 out of 5 by 3 reviewers.
Rated 3.0 out of 5.0 by Please making sure your gas pipe is big enough before you buy it! My house has the existing 1" gas pipe and this water heater request 3/4" gas inlet. I thought I can replace my old tank water heater with this little water heater. After city came to inspect, I learned that because the BTU of this water is 157,000, It use 3 times more gas than my old one. After inspector's calculation, the existing 1" main gas line is not big enough for current gas appliances plus this water heater. Now, I spent several thousand dollar to install new dedicated 1" gas line just for this water heater. Please making sure that you have a large gas pipe before you buy it! Also remember, the unit doesn't come with service valves and local Home Depot store don't sell it! June 5, 2015
Rated 4.0 out of 5.0 by A plumber installed the unit. A little complicated but with a qualified installer, it was not a problem The unit seams to be performing very well although it has only been in use a short time. April 17, 2014
Rated 5.0 out of 5.0 by 6 months of usage, and meets expectations The supply of hot water is more than adequate for our reasonably small family. We decided to buy a unit that exceeded our demand because the incremental price was so small. Our unit was installed by a general contractor who failed to read the installation instructions. The unit kept shutting off every time we used it, and needed to be reset. The reason is because there was a drain plug that needed to be removed. It was clearly marked "REMOVE UPON INSTALLATION". I called tech support to report the error code on the control panel, and they guided me to this drain plug immediately. That solved the problem. Excellent customer support. I'm going to remind everyone that tankless means "unlimited" hot water. It doesn't mean "instant" hot water. Depending on the ambient temperature, we get hot water in seconds or minutes. The longest run is 30 feet to the most distant sink. To offset the delay in the hot water arriving, I bought an under-sink, 4 gallon, 120v hot water heater. This gives me the water needed while the tankless delivers the rest. September 16, 2014
  • 2015-07-29T12:10:47.465-05:00
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