Rheem EcoSense 8.4 GPM 180,000 BTU Ultra LoNox Natural Gas Mid Efficiency Indoor Tankless Gas Water Heater-ECO180DVLN3 - The Home Depot

Rheem EcoSense

Model # ECO180DVLN3

Internet # 203213750

8.4 GPM 180,000 BTU Ultra LoNox Natural Gas Mid Efficiency Indoor Tankless Gas Water Heater

Rheem EcoSense 8.4 GPM 180,000 BTU Ultra LoNox Natural Gas Mid Efficiency Indoor Tankless Gas Water Heater

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

$749.99 / each
  • No standing pilot means less wasted energy
  • Compact space saving design frees up valuable square footage
  • Commercial conversion kits available for commercial applications


Model # ECO180DVLN3

Internet # 203213750

Store SO SKU # 1000067396

The Rheem EcoSense ECO180DVLN3 Indoor Natural Gas Tankless Water Heater can provide up to 8.4 Gallons per minute at a 35 degree temperature rise. The 180,000 BTU Natural Gas Tankless Water Heater is designed to supply continuous hot water for up to 2 to 3 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 and also qualifies for the Energy Star program. It comes with a remote digital thermostat that can be installed in almost any convenient area of the house. This heater's direct-vent design requires category III stainless steel venting (purchased separately). This model can be used at elevations up to 9,840 ft. above sea level. 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 for your household needs.

  • This model requires 3 in./5 in. UL approved Category III coaxial stainless steel venting (sold separately). Please click the "More Info" tab to view the Use and Care Manual for installation requirements
  • A 8.4 GPM tankless water heater at a 35 degree temperature rise can provide enough hot water to supply a 2-3 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
  • 0.82 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)
  • Note: product may vary by store

Info & Guides

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Assembled Depth (in.)  9.875 in  Assembled Height (in.)  25.625 in 
Assembled Width (in.)  13.875 in  Product Depth (in.)  9.875 
Product Height (in.)  25.625  Product Width (in.)  13.875 
Vent diameter (in.)  5.0  Water Connection Size (in.)  0.75 
Automatic Shut-off  Yes  Finish Family  Gray 
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  Gas Connection Size  0.75 
Gas Product Type  Commercial & Residential  Gas Type  Natural Gas 
Gas Type  Natural Gas  Indoor/Outdoor  Indoor 
Maximum Temperature (F)  140.0  Minimum Activation Rate (gpm)  .40 
Minimum Temperature (F)  85.0 °F  Pilot Light  No 
Point-Of-Use  No  Product Weight (lb.)  54 lb 
Residential/Commercial/industrial Use  Residential or commercial  Returnable  90-Day 
Total BTU  180000 Btu  Vent Type  Single Wall 
Water Connection Location  Bottom  Water Heater Features  Ultra LoNox 
Warranty / Certifications
Certifications and Listings  1-UL Listed,CSA Listed  ENERGY STAR Certified  Yes 
Labor Warranty  1 Year  Part Warranty  5 Year 


Rated 3.1 out of 5 by 15 reviewers.
Rated 1.0 out of 5.0 by Do not buy this unit! Rheem does not support their products As other reviewers mentioned, Rheem customer support and warranty is terrible. This unit worked fine for me for about 2 years. Then it developed a big leak in the heat exchange. I called Rheem for support and they would not warranty the unit claiming incorrect vent installation despite the fact I followed their instructions exactly. They even tried to tell me I used parts that weren't in the kit. I had kept the instruction and showed them the parts were included, but they continued to say it was all my fault. Don't buy from Rheem. I sure wish I hadn't! January 15, 2015
Rated 1.0 out of 5.0 by Worked well for almost a year The Rheem 8.4GPM tankless hot water heater has a design flaw. Internal to the unit is an observation window used for determining if the burner is working properly. This window has a piece of glass which can fall out, allowing heat from the burner to damage internal components, rendering the unit inoperable. Unfortunately, Rheem will not cover the cost of this failure as they will most likely look for ways to classify the failure as "incorrect installation". In my experience, they did not like the vent termination assembly used, and disqualified any warranty regarding damage induced by the piece of glass falling out, which is wholly unrelated. May 3, 2013
Rated 1.0 out of 5.0 by Don't Buy, if you plan to install yourself Bought in Feb 11 in a pinch and installed myself. Had issues with fault at 125 degrees. Requested support from Rheem and could not get any. (none of Rheem warranty shops would retun my calls.) Home Depot also could not recommend support. Settled on setting of 120, which meant only one shower, or wash at a time. Two years later, April 13, total unit has crashed. Water leaking inside. Contacted Rheem, they asked for E-mail of pictures of wet inside and vent system. Result is; tech claims vent install is wrong. Was supposed to be 12" from ground. Wrong install means no warranty. This ends up as $400/yr spend to heat water. Just beware! Install yourself, and your stuck with the results. Carefully verify the exaust requirements. I would even recommend you take a pic of exaust, contact support and tell them you want them to verify it is correct. April 18, 2013
Rated 4.0 out of 5.0 by Very good Heater, Home depot does not sell vent kit. This was very easy to install once you find the proper install parts that Home Depot does not sell! Why you ask ? That was my thoughts exactly! I called Rheem for the part #s and their prices. Then looked them up on Amazon. I saved about $180.00 with Amazon ( I have Amazon prime) once you get everything you need install was a snap. September 17, 2014
Rated 1.0 out of 5.0 by Rheem ECOSense Noise and Vibration I have this unit installed about a year ago by a local technician and couple week ago it start making noise and vibrating. The stupid thing is so loud keep waking me up in the middle of the night. I called the technician but no luck. Anyone have this issue? or know how to fix it? January 15, 2015
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