Model # RETEX-13

Internet #300800566

Store SKU #1002624309

Rheem Performance 13 kW Self-Modulating 2.14 GPM Electric Tankless Water Heater
0020352682921

Rheem

Performance 13 kW Self-Modulating 2.14 GPM Electric Tankless Water Heater

  • Save money by heating water when you need it
  • Requires 1 x 60 Amp Double Pole Breaker
  • Call for an Installation Quote at 1-855-400-2552
$ 271 00
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Product Overview

  • Save money by heating water when you need it
  • Requires 1 x 60 Amp Double Pole Breaker
  • Call for an Installation Quote at 1-855-400-2552
Rheem Performance Tankless Electric Point-of-Use Water Heaters help reduce energy usage, save on energy costs, and are small so they will be a perfect match for installations under a cabinet or sink in your home, office, boat or RV. Plus, it's a great value with a 5-year heat exchanger and 1-year parts limited warranty.
  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application
  • Instant, continuous hot water: instantly provides ample hot water for up to 2 showers (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location)
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Great investment and value: energy cost savings and 5-year no-leak, 1-year parts limited warranty
  • Easy to adjust: electronic temperature control adjustable in 1° increments from 80°-140°F with easy-to-read display (Celsius and Fahrenheit compatible)
  • Easy installation: compatible with 1/2 in. water connectors for flex hose installation and no venting or T and P valve required for easy installation (professional installation recommended)
  • Easy to maintain: durable, easy-to-replace heating elements
  • A reliable hot water solution from Rheem, the global leader in water heating
  • Selection guide
  • Other models available:



  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Product Overview

  • Save money by heating water when you need it
  • Requires 1 x 60 Amp Double Pole Breaker
  • Call for an Installation Quote at 1-855-400-2552
Model #: RETEX-13
Sku #: 1002624309
Internet #: 300800566

Rheem Performance Tankless Electric Point-of-Use Water Heaters help reduce energy usage, save on energy costs, and are small so they will be a perfect match for installations under a cabinet or sink in your home, office, boat or RV. Plus, it's a great value with a 5-year heat exchanger and 1-year parts limited warranty.

  • Energy and cost savings: heats water only when it is needed for savings of up to 50% on water heating costs when used in a point-of-use application
  • Instant, continuous hot water: instantly provides ample hot water for up to 2 showers (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location)
  • Space savings: small, compact design fits perfectly in tight places like under cabinets and sinks
  • Great investment and value: energy cost savings and 5-year no-leak, 1-year parts limited warranty
  • Easy to adjust: electronic temperature control adjustable in 1° increments from 80°-140°F with easy-to-read display (Celsius and Fahrenheit compatible)
  • Easy installation: compatible with 1/2 in. water connectors for flex hose installation and no venting or T and P valve required for easy installation (professional installation recommended)
  • Easy to maintain: durable, easy-to-replace heating elements
  • A reliable hot water solution from Rheem, the global leader in water heating
  • Selection guide
  • Other models available:



  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs
  • California residents see Prop 65 WARNINGS

Info & Guides

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Customers Also Compared These

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Brand Rheem Rheem Rheem Rheem
Name Performance 8 kW Self-Modulating 1.55 GPM Electric Tankless Water Heater Performance 11 kW Self-Modulating 1.97 GPM Electric Tankless Water Heater Performance 13 kW Self-Modulating 2.14 GPM Electric Tankless Water Heater Performance 18 kW Self-Modulating 3.5 GPM Electric Tankless Water Heater
Price
$209.00
$259.00
$271.00
$429.00
Ratings (26) (22) (91) (78)
Wattage (watts) 8000 11000 13000 18000
Water Heater Features Wall Mountable Wall Mountable Wall Mountable Wall Mountable
Flow Rate @ 45 F Rise (gallons/min) 1.21 1.67 gal (US)/min 1.97 2.73
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
3.625
Product Height (in.)
12
Product Width (in.)
8.25
Water Connection Size (in.)
1/2 In. NPT adapter included

Details

Amperage (amps)
57
Application Type
Residential
Electric Product Type
Residential
Finish Family
Gray
Flow Rate @ 35 F Rise (gallons/min)
2.54 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
1.97
Flow Rate @ 55 F Rise (gallons/min)
1.61
Flow Rate @ 65 F Rise (gallons/min)
1.37
Fuel Type
Electric
Heat Exchanger Warranty
5 Year
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
.25
Minimum Temperature (F)
80
Product Weight (lb.)
7lb
Required Volt Connection
240 volt
Returnable
90-Day
Uniform Energy Factor
0
Water Heater Features
Wall Mountable
Wattage (watts)
13000
Wattage (watts)
13000

Warranty / Certifications

Certifications and Listings
1-UL Listed,CSA Listed,ETL Listed
Labor Warranty
No Warranty
Part Warranty
1 Year

Specifications

Dimensions

Product Depth (in.)
3.625
Product Height (in.)
12
Product Width (in.)
8.25
Water Connection Size (in.)
1/2 In. NPT adapter included

Details

Amperage (amps)
57
Application Type
Residential
Electric Product Type
Residential
Finish Family
Gray
Flow Rate @ 35 F Rise (gallons/min)
2.54 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
1.97
Flow Rate @ 55 F Rise (gallons/min)
1.61
Flow Rate @ 65 F Rise (gallons/min)
1.37
Fuel Type
Electric
Heat Exchanger Warranty
5 Year
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
.25
Minimum Temperature (F)
80
Product Weight (lb.)
7lb
Required Volt Connection
240 volt
Returnable
90-Day
Uniform Energy Factor
0
Water Heater Features
Wall Mountable
Wattage (watts)
13000
Wattage (watts)
13000

Warranty / Certifications

Certifications and Listings
1-UL Listed,CSA Listed,ETL Listed
Labor Warranty
No Warranty
Part Warranty
1 Year

Questions & Answers

My trailer runs completely off electric, can this heater work on a 3 bdr 2 bth, trait

Asked by: Nate
yes
Answered by: GATOR
Date published: 2018-06-22

My house has 1300 sq feet and we are a family of 3. Will this heater work for my house?

My breaker is 30 amps now can I change it to 60 amps? And this one work better 11kw
Asked by: Eddy
If your bathroom, laundry and kitchen are not far apart, this unit should work fine. If not you might have to consider a larger capacity unit.
Answered by: Bindi
Date published: 2018-12-04

Are the input and output reversable or can the unit be mounted upside down?

Asked by: Strut
You can mount it in any position.
Answered by: GATOR
Date published: 2019-01-19

The Performance 11kW and 13kW show same water heating specs and same amp draw. How is this if th...

The Performance 11kW and 13kW show same water heating specs and same amp draw. How is this if the 13kW has a larger power rating? Not sure why Rheem would offer both?
Asked by: foo
Good question, the water heating performance shown in the specs are indeed the same for the 11 kW heater and 13 kW heater. This can not be true. I did the calculations and found the following: The specs for the 13 kW heater are correct; specs for the 11 kW heater are incorrect. A 11 kW heater at 45 degree F temperature rise will have a flow rate of 1.67 gpm, not 1.97 as shown in the specifications. The flow rates for the other temperature rises are also incorrect for 11 kW. A 13 kW heater at 45 degree F temperature rise will have a flow rate of 1.97 gpm, correct as shown. There is an exact correlation between flow rate, temperature rise, and kW required.
Answered by: Bill
Date published: 2019-02-26
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Customer Reviews

Performance 13 kW Self-Modulating 2.14 GPM Electric Tankless Water Heater is rated 4.1 out of 5 by 91.
Rated 4 out of 5 by from I'm in the process of installation. I called the company and was told that the heater can be blow... I'm in the process of installation. I called the company and was told that the heater can be blown out (winterized) with compressed air. That's helpful info that doesn't come in the package. I don't like that the hot & cold connections on the unit are straight threads and aren't truly appropriate for a pipe fitting (tapered threads) The company voice told me that teflon tape would seal the threads. A previous reviewer advises to use a rubber gasket ('O' ring) in the included fitting - would prevent leakage better than any amount of tape. As with any tankless heater, the elements only raise the water temperature a certain amount. This one measures the velocity of the water, so the temperature increase can be greater if the faucet is only partially opened. Also, anticipate that a scale build-up will form in the heating elements - and should be cleaned periodically. I saw a cleaning video on youtube where a guy disconnected the water lines from the heater and used short hoses and a cheap re-circulation pump in a bucket of water/vinegar mixture.to descale. To do that, I'm using short flexible 3/4" water heater lines to go from my plumbing pipes to the heater. That way, I can unscrew the flexible lines and attach the pump hoses to the Rheem heater if/when descaling becomes necessary. The factory guy said that softened water should leave less scale build up. Thankfully, our water is already softened. That's all until I get the installation finished.
Date published: 2019-02-05
Rated 2 out of 5 by from Even at the maximum temperature setting, this water heater does not provide me with a hot shower. Even at the maximum temperature setting, this water heater does not provide me with a hot shower.
Date published: 2019-02-20
Rated 3 out of 5 by from I gave this 3 stars while answering No to the question "Would you recommend this product?" This ... I gave this 3 stars while answering No to the question "Would you recommend this product?" This may be confusing but this product is installed but not yet powered. Let's go over the installation. It takes an electrician to run the specified gauge wiring and circuit breaker. This is an additional cost in addition to the unit. Once the plumbing was installed, highly recommend flushing the line because the water is completely black. It took a few flushes to get clear water. Until it is used, I would not change my rating. My goal is to reduce the electricity cost by using this as a supplement to the 50 gal high efficiency water heater. The water into this unit will be warm by the water heater which is going to be set at a most efficient setting.
Date published: 2019-02-20
Rated 1 out of 5 by from Don't buy!!!! Used this tankless water heater for approximately 5 months when it stopped working! Called Rheem about the problem and was told it has minerals/dirty and was told to clean it myself, they DO NOT honor the warranty. The water heater is heating backwards or something but Rheem is convinced it's not their problem. This product is trash!!! Deserves No stars!
Date published: 2019-03-11
Rated 1 out of 5 by from THIS PRODUCT IS NOT FOR SHOWERING!!! talk about false advertising! with 50 degree water comin... THIS PRODUCT IS NOT FOR SHOWERING!!! talk about false advertising! with 50 degree water coming in it won't even do 1.5 GPM! i just spent 3k to to try to make this work!!! (electricians, plumbers, etc) went bank to the tank. what a huge disappointment.
Date published: 2019-02-26
Rated 4 out of 5 by from Easy to install ( we used a plumber but anyone with rudimentary handyman skills should be able to... Easy to install ( we used a plumber but anyone with rudimentary handyman skills should be able to do it). We can only use 1 faucet at a time with it but meets our needs.
Date published: 2019-03-19
Rated 5 out of 5 by from Only been in use a couple of weeks but is working great . Was fairly easy to install. Happy with... Only been in use a couple of weeks but is working great . Was fairly easy to install. Happy with it so far.
Date published: 2019-01-01
Rated 5 out of 5 by from Will have to limit flow a bit to have water... Will have to limit flow a bit to have water temp match set temp but does a good job for my garage sinks
Date published: 2019-03-05
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