Model # RETE 13

Internet #202514583

Store SO SKU #1000114405

Rheem EcoSense RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
0020352591988

Rheem EcoSense

RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater

  • Uses energy only when hot water is needed
  • Compact design allows simple installation almost anywhere
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
$203.81 /each

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Product Overview

The Rheem EcoSense RETE-13 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 a single bathroom in warmer climates or continuous hot water at a single point-of-use faucet in colder climates. Please click the "More Info" Tab and the "Specifications" to view the Rheem Brochure Guide to assist you in your purchasing decision.

California residents: see   Proposition 65 information

  • Provides a maximum of 2.54 GPM continuous flow at a 35 Degree F temperature rise
  • Designed to provide continuous hot water for a single bathroom in warmer climates or continuous hot water at a single point-of-use faucet in colder climates
  • 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
  • 13kW water heater requires a 240-Volt electrical service, a dedicated 60 Amp breaker and 6-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
  • 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.



  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
$203.81 /each
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Name RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater 11 kW 2.14 GPM Self-Modulating Electric Tankless Water Heater 14 kW Real-Time Modulating 3 GPM Electric Tankless Water Heater 18 kW Self-Modulating 3.5 GPM Electric Tankless Water Heater
Brand Rheem EcoSense EcoSmart IHeat EcoSmart
Ratings (332) (52) (5) (120)
Flow Rate @ 45 F Rise (gallons/min) 2 1.97 2.12 2.73
Wattage (watts) 13000 11000 14000.000 18000
Indoor/Outdoor Indoor Indoor Indoor/Outdoor Indoor
Water Heater Features No Additional Features Wall Mountable Overheat Protection,Wall Mountable Wall Mountable
Certifications and Listings 2-UL Recognized 1-UL Listed,CSA Listed,ETL Listed 2-UL Recognized,ETL Listed,NSF Listed 1-UL Listed,CSA Listed,ETL Listed
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Customer Questions & Answers

81 Questions187 Answers

Customer Questions & Answers

RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater

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6 answers

Will this work to replace a 50 gallon electric water heater?

This question is from RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
Asked by
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September 20, 2015
I'm looking to convert to a tankless water heater. My home has a kitchen, 2 bathrooms, and a jacuzzi. Will this product work for the conversion or do i need to go bigger? If so, what's the next size up?
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Answers (6)

Asked by
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January 13, 2016
Answer: 
The flow rate (gallons per minute) at 120 degrees depends on the incoming water temperature. If you water temperature is 40 degrees and you need 120 degrees you maximum flow rate for this unit is about 1 ½ gallons a minute. . The RETE-18 or 27 is designed for fast, continuous hot water in a bathroom addition/renovation or single shower. Follow this web link for specification sheet for out tankless Read More
The flow rate (gallons per minute) at 120 degrees depends on the incoming water temperature. If you water temperature is 40 degrees and you need 120 degrees you maximum flow rate for this unit is about 1 ½ gallons a minute. . The RETE-18 or 27 is designed for fast, continuous hot water in a bathroom addition/renovation or single shower. Follow this web link for specification sheet for out tankless products.
http://goo.gl/1nluj7 Read Less
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Asked by
sandiego california
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Home Improvement Profile: Professional
December 4, 2015
Answer: 
...its not how many bathrooms you have...its how many bathrooms you use at once. if you are taking a shower and you're the only one taking a shower in the house at that time it will work fine.
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Asked by
illinois
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Home Improvement Profile: Professional
November 10, 2015
Answer: 
I would go with a bigger unit
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Asked by
Texas
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November 7, 2015
Answer: 
You're going to want to go bigger, probably. It replaced MY fifty-gallon heater, but all I run is a shower and two sinks.
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Asked by
Gordonville, TX
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Home Improvement Profile: DIYer
October 16, 2015
Answer: 
mine was a 40 gallon and the RETE-13 is doing just fine
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Asked by
KC, MO
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Home Improvement Profile: DIYer
September 22, 2015
Answer: 
I DO NOT THINK THIS IS LARGE ENOUGH FOR YOUR HOME....I WOULD GO FOR THE NEXT SIZE RETE-18 OR LARGER...WE GOT BY WITH THE SMALLEST BECAUSE OF 1 BATH AND ONLY 2 IN THE FAMILY...YOU WILL LOVE THE ENDLESS HOT WATER, YOU WILL NEVER RUN OUT....GOOD LUCK...
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6 answers

Is this unit large enuff for a single bath with shower and sink used by two adults ?

This question is from RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
Asked by
Bremen, Ohio
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September 16, 2015
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Answers (6)

Asked by
Cortez, CO
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July 16, 2016
Answer: 
Yes, the unit can supply water for a single bath. The question is how cold is your incoming water? I live in Colorado, where the cold water is very cold in the winter, and the unit cannot meet the demand for a bath. I have a 1.5 gpm showerhead, and the unit has no trouble supplying steaming hot water for a shower. When the unit works, that is.
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Asked by
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December 21, 2015
Answer: 
Yes!
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Asked by
Texas
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November 7, 2015
Answer: 
That's my exact living situation, and it works great for me. You may want to try and place it as close as possible to your shower, but other than that I've had no problems.
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Asked by
Oahu
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October 31, 2015
Answer: 
Works for us.
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Asked by
KC, MO
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Home Improvement Profile: DIYer
September 22, 2015
Answer: 
YES THAT IS OUR HOME SPEC'S......WE TAKE 2 BATHS IN A ROW AND NEVER RUN OUT OF HOT WATER...IF YOU TAKE MOSTLY SHOWERS YOU MIGHT GO WITH THE NEXT SIZE FOR MORE FLOW IN THE SHOWER....
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Asked by
illinois
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Home Improvement Profile: Professional
September 17, 2015
Answer: 
Yes, absolutely. it works great in my house.
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6 answers

Looking at this for a hunting cabin

This question is from RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
Asked by
Cairo, GA
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July 15, 2015
Can this be used in a situation where the water to the cabin is turned off for periods when there is no one there. Water could be off for 3 months at a time. Electric would also cut off.
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Answers (6)

Asked by
Read all my Q&A
December 14, 2015
Answer: 
Yes, as long as the power is turned off, as with any water heater it can be turned off for extended periods of time.
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Asked by
Arkansas
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Home Improvement Profile: DIYer
August 6, 2015
Answer: 
Perfect.
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July 19, 2015
Answer: 
Yes, this unit will be fine in that situation.
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Asked by
KC, MO
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Home Improvement Profile: DIYer
July 18, 2015
Answer: 
Yes this would be great....Make sure you drain the unit , if allowing the area to freeze....as all water lines should be drained during unheated times...
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Asked by
KC, MO
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Home Improvement Profile: DIYer
July 18, 2015
Answer: 
this would work great..I would design it so you can drain the water from it when not in use...
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Asked by
florida
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July 18, 2015
Answer: 
That would not hurt the unit at all. It only heats water when you turn a fauxet on. Cutting off the water andeletric would not do anything to the unit.
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5 answers

can sharkbite connectors be used within 3 feet of unit. sharkbites have plastic in them

This question is from RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater
Asked by
san antonio, tx
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April 22, 2016
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Answers (5)

Asked by
Melstone, Mt
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Home Improvement Profile: DIYer
October 18, 2016
Answer: 
Yes. We have shark bite connectors on ours. You just can't use PEX within 3 feet of the unit.
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Asked by
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May 11, 2016
Answer: 
As long as these connectors are in accordance with state and local codes they can be used.
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Asked by
W. Michigan
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Home Improvement Profile: Other
April 25, 2016
Answer: 
I see online that Sharkbites are certified to 200 degree F and 200 psi, looks like they'd be OK, as the water heater shouldn't go that high. At the resort where I was chief engineer we used a lot of them for repairs, never had one leak due to high temps, only due to poor pipe prep.
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April 25, 2016
Answer: 
Yes, I have them coming right off the unit with no problems
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Asked by
HOLDEN, MO
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Home Improvement Profile: DIYer
April 25, 2016
Answer: 
I would not use them at all on hot water pipe..brass compression would be best...
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Customer Reviews

RETE-13 - 13kW 1.97 GPM Tankless Electric Water Heater is rated 4.2 out of 5 by 332.
Rated 4 out of 5 by from Good For Cabin Use Good product--bought 2 ( one for each Montana cabin). We are average do-it -yourselfers. Works well for our needs, however, can only use one hot water application at a time for how we have it hooked up. Electrical hookup is confusing in that the pigtail is #8 wire when it needs to be hooked up with #6 wire. Works reliably and provides adequate hot water for a shower after hunting. To adjust water temperature, you must turn on hot first, then adjust with cold. Overall good product.
Date published: 2016-10-18
Rated 3 out of 5 by from Not a bad unit to install but the stupid in/out fittings are not 3/4" pipe. The result is you ha... Not a bad unit to install but the stupid in/out fittings are not 3/4" pipe. The result is you have too use multiple compression fittings and copper pipe to plumb it up.
Date published: 2016-12-06
Rated 5 out of 5 by from Works for me Replaced my 18 year old electric water heater with this, You have to wait about 6o seconds for hot water, but it works just fine.
Date published: 2016-08-02
Rated 1 out of 5 by from In my opinion, Junk. I installed this heater as a point of use heater for my kitchen and laundry... In my opinion, Junk. I installed this heater as a point of use heater for my kitchen and laundry room sink. As a background, I have dual 200 Amp service entrances in my house. The upstairs entrance is at 42% capacity and the downstairs is at 24% capacity. The entrances are fed from a 400 amp lug with separated disconnects. I wired this water heater into the down stairs panel. The run was 18 feet from the panel. I wired with #6 copper service cable and used 60 amp Cutler Hammer breaker. When the unit was first installed, it heated water wonderfully but caused LED lights running on the upstairs panel(not even the panel it was wired into) to flicker when it was operating. I checked voltage on both panels with heater operating and it was not causing a voltage drop. The problem was not in the electrical, the problem was the water heater was causing some sort of electrical interference. I verified connections and verified bonding, there were no issues. The interference continued. I talked with another electrician and he told me that every one he has ever installed caused LED to flicker. I just dealt with the flickering LED. After the Unit had been running for app. 45 days, 2 DFCI breakers randomly tripped at the same time and showed both arc and ground faults. I reset them and the next morning noticed I had no hot water on the sinks supplied by this heater. Standby light on the heater was off. Verified electrical connections and power to the unit and there was 242 volts present at the unit, but the unit would not turn on. I will add that both panels and the service lug of the house are protected by whole house surge suppressors. There was no lightning activity in the area when the heater went out. In my opinion, it is just a piece of junk.
Date published: 2016-11-13
Rated 2 out of 5 by from Used over a year Installed during renovation over a year ago. The ability to produce hot water was getting spotty after a year. Playing with the shower water flow and heater controls resulted in hot water, but the heater totally gave out after a while. I bought a second one to replace the first one. The only reasons I went back to the same model were the electricals and plumbing were already in place for it, and there was an urgency to get hot showers again, so I just wanted a fast replacement. Any electricity savings went out with the purchase of the second one.
Date published: 2016-10-11
Rated 5 out of 5 by from Best little heater for the money!! I've been using this as a shop water heater in my 40x30 4 stall garage with a 28 x 30 apartment above. It is all I need to run a shower with endless hot water including 2 sinks and laundry. Impressive super compact design, I followed directions for proper installation using the copper pipe as recommended to PEX and have used it steadily for 2 years straight, no issues. It is wall mounted close to the sink and shower with the other sink at a 30 foot distance and still provides hot water without waiting too long at that one. Water flow has never suffered just as strong as the cold feed. Adjustable heat setting which never has to be turned all the way up to the max heating range. The water would be scalding in that range! Even with well water coming in at sometimes 40-50 degrees from the ground, the heating efficiency of this unit consistently makes the water hot at it's optimal setting. Which is almost at it's lowest setting! I've also added a hot water line with an external wall spigot for using hot water while pressure washing outside! Greasy parts snow and ice removal...very nice! I have told people that this is by far the best little water heater i've ever bought. Hands down!
Date published: 2016-03-06
Rated 2 out of 5 by from not so good Electric point of service water heaters apparently aren't all they're cracked up to be. Less than six months after the first one was installed (by a professional plumber after an electrician had to run a 22-volt line into our kitchen) its heating cvoils gave out. Fought with Rheem for a replacement; still waiting to install #2.
Date published: 2016-08-30
Rated 4 out of 5 by from RETE-13 TANKLESS WATER HEATER: Works for me... Works as advertised. Installation was easy, especially since it was new construction. ( didn't have to modify an existing setup ) Does require a high amperage service connection. Running a washing machine and dog grooming tub. Used lightly for about 6 months now, and I have no complaints.
Date published: 2016-03-25
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