Rheem EcoSense 2.5 GPM Max Flow Rate 240 Volt 7kw Electric Tankless Water Heater-RETE 7 at The Home Depot
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Rheem EcoSense

Model # RETE 7

Internet # 202514579

Store SKU # 452526

2.5 GPM Max Flow Rate 240 Volt 7kw Electric Tankless Water Heater

Rheem EcoSense 2.5 GPM Max Flow Rate 240 Volt 7kw Electric Tankless Water Heater

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

$156.80 / each


Model # RETE 7

Internet # 202514579

Store SKU # 452526

Store SO SKU # 1000114380

This Rheem EcoSense 2.2 GPM Electric Tankless Water Heater features a 10-year limited warranty on the heat exchanger and a 1-year limited warranty on parts. The water heater features on-unit temperature controls and LED indicators that show active elements and standby mode and facilitate temperature adjustment. 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# based on your application support type and demographic area for water temperature.

  • 2.2 GPM capacity supplies continuous hot water at a 35-degree Fahrenheit temperature rise
  • Able to provide small quantities of hot water for point-of-use applications
  • 7 kW 240-volt tankless electric water heater is energy efficient and uses energy only when hot water is needed
  • 10-year limited warranty on the heat exchanger and a 1-year limited warranty on parts
  • Rugged brass/copper heat exchanger is designed to withstand tough water conditions for long life
  • Lightweight compact design saves space and enables simple installation in many locations
  • Equipped with a 240-volt electrical supply cord and 1/2 in. water connections for easy installation (240-volt hard-wired electricity required)
  • On-unit temperature controls and LED indicators show active elements and standby mode and facilitate temperature adjustment
  • Excellent option for remodeling and additions
  • Suitable for homes, apartments, condos, hospitals, hotels, boats, restaurants, offices and laboratories where hot water is needed
  • 2.5 GPM max flow rate
  • Modulating Control adjusts power consumption to meet the required hot water / temperature flow rate

    How to Choose Your Rheem EcoSense Tankless Electric

    Choose your application, ie. shower, bath tub or vanity sink-faucet, kitchen sink faucet or washer. See chart below.

    For example: you choose a kitchen sink faucet.

    See application chart below and locate your flow rate. For example: your flow rate is 1.5 gpm.

    On the map, locate the average water temperature in your area.

    For example: your water temperature (in Atlanta) is 55°

    Use the water temperature and flow rate chart to determine the model you need.

    For example: 1.5 gpm flow rate + 55° = RETE 9.

Info & Guides

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Amperage (amps)  29  Assembled Depth (in.)  3.25 in 
Assembled Height (in.)  10.25 in  Assembled Width (in.)  5.375 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)  1.37 gal (US)/min  Flow Rate @ 45 F Rise (gallons/min)  0.21 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)  0 °F 
Part Warranty  1 Year  Point-Of-Use  Yes 
Product Depth (in.)  3.25  Product Height (in.)  10.25 
Product Weight (lb.)  6 lb  Product Width (in.)  5.375 in 
Residential/Commercial/industrial Use  Residential or commercial  Returnable  90-Day 
Water Connection Location  Side  Water Connection Size (in.)  1/2 
Water Heater Features  No Additional Features  Wattage (watts)  7000 


Rated 2.9 out of 5 by 16 reviewers.
Rated 3 out of 5 by Delivers warm water at reduced volume I purchased this product because I wanted to do a simple replacement of the old water heater without wiring in a new line for a higher amperage requirement tankless water heater. This was rated at 30 amps, which is the same as my old one. Installation was easy, but you need to buy adapters because this has a 1/2" feed while the standard water heater uses 3/4" pipe. The water is mildly hot at the highest setting of the thermostat. I live in Hawaii, so if you live in a cold clime don't expect to get hot water. Also, the water flow is reduced because of the smaller pipe. If you have a large family, this is not the right choice. Overall, I would rate it as average. October 9, 2013
Rated 4 out of 5 by Good product so far While we have only had this product about a week, it performs as advertised. It serves as a dedicated unit for the kitchen, which is the longest run in the house from our regular whole house on-demand unit (which takes an inordinately long time for hot water to reach the kitchen). The delivered water temperature and flow rate are highly dependent on the temperature of the incoming water and the temperature to which you want to raise it. In our case, the incoming water from a deep well is around 60 degrees. The unit is set to heat on its highest setting, so the water is hot enough but not steaming hot. The flow rate is adequate but not gushing - When you switch from hot to cold you see a slight increase in flow rate - not particularly meaningful. Adequate for the dish washer as well. If we wanted to get a higher temperature and flow rate we should have purchased the next size up, the RTE-9. It requires a 50 amp service and we decided to settle for the RTE-7 at 40 amps. I'm not totally comfortable sweating copper joints so we brought in our plumber, who installed it with no problems. July 24, 2014
Rated 4 out of 5 by Good for 1 sink if incoming water is not too cold I installed the 7kw heater to boost the water temperature at a sink in the garage, far from our main water heater. It does the job; no more waiting for the water to warm up to wash my hands (or using freezing cold water). This heater may not be adequate if your groundwater is cold or you need a high flow rate (shower, dishwasher). Our groundwater comes in at 45˚F and this unit is not able to make it hot without help from our main water heater. But as a booster for the sink it works great. It activates at a low flow rate, so you don't need to run a lot of water to have it hot. It is compact and fairly easy to install. It fit in the cabinet under the sink. There were, however, no instructions for the electrical connection; I was initially confused by the wiring. The unit comes with a short cable out of the bottom so you don't need to open it up to connect the wiring. The cable had three wires—black, white and bare (ground). I always thought white was neutral, but in this case it is the other hot (usually red). Since it is a straight 240V appliance, it doesn't use a neutral, just the two hots and ground. Once I figured this out, installation was straightforward. The 7kW unit draws 29 amps, so it requires heavier wiring and a dedicated circuit; I converted a 30A circuit that was previously used for an electric dryer. I would recommend this for a single sink if your incoming water is not too cold and you don't need high flow rates. If you need more than this, then you should consider a bigger unit. November 15, 2011
Rated 3 out of 5 Lukewarm Review Provides adequate warm-hot water depending on the temp of the supply water. If the supply water is very cold you get lukewarm water. When the supply in not very cold you get warm-hot water. It is being used to supply hot water to a bathroom sink that is primarily used for occasional hand washing Hopefully it will save money over the 5 gal elec water tank that was in a cold overhead/attic. May 3, 2011
Rated 1 out of 5 by A Piece of junk The water temp cannot be set above medium without the thing shutting off. Difficult to reset. Water temp varies greatly while it is running. When you mix in cold water at the tap the hot water heater shuts off. I would never, ever recommend this to anyone! January 12, 2013
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