Rheem EcoSense 8.4 GPM 180,000 BTU Ultra LoNox Liquid Propane Gas Mid Efficiency Outdoor Tankless Water Heater-ECO180XLP3 at The Home Depot

Rheem EcoSense

Model # ECO180XLP3

Internet # 203251988

8.4 GPM 180,000 BTU Ultra LoNox Liquid Propane Gas Mid Efficiency Outdoor Tankless Water Heater

Rheem EcoSense 8.4 GPM 180,000 BTU Ultra LoNox Liquid Propane Gas Mid Efficiency Outdoor Tankless Water Heater

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

$929.55 / each


In Stock



Model # ECO180XLP3

Internet # 203251988

Store SO SKU # 1000067446

The Rheem EcoSense ECO180XLP3 Outdoor LP Gas Tankless Water Heater can provide up to 8.4 Gallons per minute at a 35 degree temperature rise. The 180,000 BTU LP Gas Tankless Water Heater is designed to supply continuous hot water for up to 2 or 3 bathrooms at the same time. It heats water only when it's needed and features 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 is designed for outdoor installation, eliminating the need for venting. 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.

  • 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
  • LP Gas tankless water heaters heat water on demand, saving energy compared to many standard LP 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
  • No standing pilot means less wasted energy
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency
  • Self-diagnostic system with a digital display shows the precise temperature setting and maintenance codes for convenience and easy maintenance
  • Compact space saving design frees up valuable square footage
  • Remote digital display shows precise temperature setting and maintenance codes
  • Ability to link two like units together for high demand applications with the EZ-Link cable
  • Commercial conversion kits available for commercial applications

Info & Guides

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Assembled Depth (in.)  8.875 in  Assembled Height (in.)  23.675 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  Liquid Propane  Gas Type  Liquid Propane 
Indoor/Outdoor  Outdoor  Labor Warranty  1 Year 
Maximum Temperature (F)  140  Minimum Activation Rate (gpm)  .40 
Minimum Temperature (F)  85 °F  Part Warranty  5 Year 
Pilot Light  No  Point-Of-Use  No 
Product Depth (in.)  8.875  Product Height (in.)  23.625 
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.)  0.0 
Water Connection Location  Bottom  Water Connection Size (in.)  0.75 
Water Heater Features  Ultra LoNox 


Rated 1 out of 5 by 1 reviewer.
Rated 1 out of 5 by Product is a Maintenance Nightmare Two years ago we bought a Rheem ECO-180DV tankless water heater at Home Depot. It was installed by a local plumber in our vacation house in the mountains of Northern New Mexico. In July of this year (2013) our water heater started locking the water heater out after two and one half minutes. After much thought, I believe the lock-out problem was triggered by volatile fumes from staining a porch being pulled into the water heater from the air intake just below the porch. Upon opening the system to trouble shoot the problem, I discovered the system had never been set for the altitude of our house, i.e., 9,000 feet. At that point I made a series of telephone calls to find a qualified tankless water heater technician. After reviewing the situation upon his arrival, the technician called a Rheem call center number available only to tradespeople. He was given the information on how to unlock the system along with the recommendation he disassemble and clean the water heater parts. (Having only six months of actual operation, the system was relatively clean.) Upon completing the above and having no luck in setting the system up to operate at 9,000 feet, he again called the Rheem call center. When he explained what he had done to set the system up for operating at 9,000 feet, the lady (the phone was on speaker) asked him to stay on the line while she went to talk to someone else. When she came back on the phone she said nothing could be done to adjust, as per the Rheem use and care manual, the system to operate at 9,000 feet. So after spending $500 plus dollars for a service call, nearly half of which was for travel, what conclusions did I reach? First, Rheem policy of not providing customers with a service manual is reprehensible. Second, Rheem’s claim that their system can be adjusted for high altitude is false. Third, Rheem’s tankless water heaters have a poor reputation with experienced repair technicians. The technician that serviced our water heater said he would never buy a Rheems because it has too many problems. Knowing what I now know, I would never have bought a Rheems tankless water heater. August 8, 2013
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