Rheem EcoSense RETE-9 - 9KW Point of Use Electric Tankless Water Heater-RETE 9 at The Home Depot

Rheem EcoSense

Model # RETE 9

Internet # 202514581

Store SKU # 452604

RETE-9 - 9KW Point of Use Electric Tankless Water Heater

Rheem EcoSense RETE-9 - 9KW Point of Use Electric Tankless Water Heater

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

$174.99 / each
  • Uses energy only when hot water is needed
  • Compact design allows simple installation almost anywhere
  • On unit control allows for easy temperature adjustment


Model # RETE 9

Internet # 202514581

Store SKU # 452604

Store SO SKU # 1000114404

The Rheem EcoSense RETE-9 Tankless Electric Water heater features a rugged brass and copper heat exchanger that is designed to withstand tough water conditions for long life. Its lightweight and compact design saves space and enables simple installation in a variety of locations. It is designed to provide hot water for 1 standard low-flow lavatory sink. Please click the "More Info" Tab and the "Specifications" to view the Rheem Brochure Guide to assist you in your purchasing decision.

  • Provides a maximum of 2.2 GPM continuous flow at a 35 degree Fahrenheit temperature rise
  • Designed to provide continuous hot water at a single point-of-use faucet
  • Flow rate provided by a tankless electric water heater is dependent on the difference in temperature of the incoming cold water supply and the desired hot water delivery temperature
  • 9 kw water heater requires a 240 volt electrical service, a dedicated 40 amp breaker and 8 gauge copper wiring
  • Energy efficient, uses hot water only when needed
  • On-unit temperature controls and LED lights indicate active elements and system operation
  • Modulating control adjusts power consumption to meet the required hot water temperature and flow rate
  • Rugged brass and copper heat exchanger is designed to withstand tough water conditions for long life
  • Lightweight and compact design saves space and enables simple installation in a variety of locations
  • Requires 240 Volt Electrical connection
  • Equipped with 1/2 in. water connections for easy installation
  • Max flow rate 3.0 GPM
  • [Modulating Control adjusts power consumption to meet the required hot water / temperature flow ratebr / br / div id="wh_wrap" style="width:700px;border:2px solid #f96302;margin:0 auto;padding:10px;" h2How to Choose Your Rheem EcoSense Tankless Electric/h2 div id="wh_step_1" style="height:220px;margin-top:10px;" div id="wh_num" style="width:33px;float:left;"img src="http://itemvideo-dev.microsite.homedepot.com/rheem/hd-1.png"/div div id="wh_step_1_content" style="float:left;padding-top:2px;padding-left:10px;" pChoose your application, ie. shower, bath tub or vanity sink-faucet, kitchen sink faucet or washer. See chart below./ppstrongFor example: you choose a kitchen sink faucet./strong/p br / pSee application chart below and locate your flow rate. strongFor example: your flow rate is 1.5 gpm./strong/p br / img src="http://itemvideo-dev.microsite.homedepot.com/rheem/flow-rate-chart.gif" /div /div div id="wh_step_2" style="height:330px;margin-top:10px;" div id="wh_num" style="width:33px;float:left;"img src="http://itemvideo-dev.microsite.homedepot.com/rheem/hd-2.png"/div div id="wh_step_2_content" style="float:left;padding-top:2px;padding-left:10px;" pOn the map, locate the average water temperature in your area./ppstrongFor example: your water temperature (in Atlanta) is 55°/strong/p br / img src="http://itemvideo-dev.microsite.homedepot.com/rheem/water-temp-map.gif" /div /div div id="wh_step_3" style="height:380px;margin-top:10px;" div id="wh_num" style="width:33px;float:left;"img src="http://itemvideo-dev.microsite.homedepot.com/rheem/hd-3.png"/div div id="wh_step_3_content" style="float:left;padding-top:2px;padding-left:10px;" pUse the water temperature and flow rate chart to determine the model you need./ppstrongFor example: 1.5 gpm flow rate + 55° = RETE 9./strong/p br / img src="http://itemvideo-dev.microsite.homedepot.com/rheem/water-temp-chart.gif" /div /div /div br /]

Info & Guides

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Amperage (amps)  38  Assembled Depth (in.)  3 in 
Assembled Height (in.)  10 in  Assembled Width (in.)  7.25 in 
Certifications and Listings  2-UL Recognized  ENERGY STAR Certified  No 
Electric Product Type  Point of Use  Finish Family  Gray 
Flow Rate @ 35 F Rise (gallons/min)  1.76 gal (US)/min  Flow Rate @ 45 F Rise (gallons/min)  1.37 gal (US)/min 
Fuel Type  Electric  Indoor/Outdoor  Indoor 
Labor Warranty  No Warranty  Maximum Temperature (F)  125 
Minimum Activation Rate (gpm)  .4  Minimum Temperature (F) 
Part Warranty  1 Year  Point-Of-Use  Yes 
Product Depth (in.)  Product Height (in.)  10 
Product Weight (lb.)  8 lb  Product Width (in.)  7.25 in 
Residential/Commercial/industrial Use  Residential or commercial  Returnable  90-Day 
Voltage (volts)  240  Water Connection Location  Side 
Water Connection Size (in.)  1/2  Water Heater Features  No Additional Features 
Wattage (watts)  9000 


Rated 4 out of 5 by 27 reviewers.
Rated 5 out of 5 by Exactly what I hoped it would be I read some reviews on this product before I bought it and some of those people should be embarrassed of themselves. There is a clear chart showing how to "size" the tankless style water heater for your area. Some of these people are getting this small unit when their ground water is only 50 degrees, what are you seriously expecting to happen. This unit works great for my house. I have a 2 bedroom 2.5 Bath Townhouse in South Florida. I don't need a very strong tankless heater because our ground water is so much warmer than the rest of the country. So this thing works great. If you properly size the unit for you house and location it will work just fine. September 16, 2014
Rated 4 out of 5 by Good for what it is For a smaller tankless, it is good. It was easy enough to install, but i noticed that it worked better with a 5/8" connector and the 1/2 " was too small. The electrical install was pretty simple, but it does take some space in the box. I have been pleased with the heat produced thus far. I would suggest starting at a trickle and then increasing flow until desired temperature is reached, otherwise it seems to not heat well.. October 28, 2014
Rated 5 out of 5 by Lovin it! We have a small one bath, two sink cottage which had a huge water heater in my closet taking up space. My brother and friend (who are handy) installed this tankless system. It takes a new heavier wire to the electric box and some new pipe ends. I would hire it done unless you have done a lot of this work before. Installed this tankless is awesome! I have continuos hot water for my shower that stays constant. It is super hot for dish washing. Probably could not wash dishes and someone take a shower at same time on this small system. But it cleared up my closet space and I don't have to pay for heated water sitting around. I love it! April 28, 2013
Rated 4 out of 5 by Great for Small Bathroom I live in Southern California and I installed this unit for a small pool house sink and shower. Installed and tested the sink and it provided hot water. Then tried to turn on shower. Water was warm. Not hot. I switched the shower head to a 1.5 gpm and now i have a nice hot shower. Well worth it if you don't want to run two water lines to a second location. Installed under sink cabinet and have had no issues. If you want to run a stronger shower head then 1.5gpm I would recommend you purchase a bigger unit. March 15, 2014
Rated 2 out of 5 by Good unit, but product description needs to say 1/2 inch COPPER pipe needed Product page reviews say 1/2 inch, but does not say 1/2 inch COPPER, which is 1/2 inch INSIDE DIAMETER. When I went to store after purchase online to get what was needed and to put a shut off in line so I could turn water on to rest of house, they told me I needed 1/2 inch plastic hot water pipe, and sold me the pieces needed. I told them which unit I had purchased. Unit came in, first noticed that they had sold me male connectors to go to unit, not female. Went back to get female connectors, would not connect, took entire unit it, "associate" was thrown for a loop, did not think you even had the connectors in the store and advised going to a local hardware store instead! Went to manager, he came back to help and between the two of us finally got the adapters needed. More information on what is needed for installation is definitely needed online and your store associates need to know what fits your products, and even what they have in the store! August 19, 2014
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