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


In Stock



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


Rated 3.4 out of 5 by 13 reviewers.
Rated 1 out of 5 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 out of 5 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 out of 5 by PLEASE READ !!!! Water heater great -Venting an issue! PLEASE READ! We bought online, it is a quality product. The water heater itself is a great product, but the venting is a nightmare to get. I hope this help someone, Home Depot does not carry nor will it help find the ventilation needed to vent thru the roof. You must call the 800 customer service order that comes w/ your unit. You will need to order directly from Rheems the items you need to vent, the cost is approximately $500.00 in addition to unit and other items. My husband is a master electrician, you need experience in plumbing and electrical to self install. I must say, now that it is all over, I couldn't /wouldn't do w/o a tankless anymore! Good luck! April 15, 2014
Rated 2 out of 5 by dissapointed after 18 months a pinhole leak developed in the heat exchanger piping, occuring at one of the 90 degree bends. March 30, 2014
Rated 4 out of 5 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
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