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  • Rheem RTE 13 Electric Tankless Water Heater, 4 GPM
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Rheem RTE 13 Electric Tankless Water Heater, 4 GPM

by Rheem
| 87 answered questions

List Price: $508.00
Price: $178.22 & FREE Shipping. Details
You Save: $329.78 (65%)
In stock but may require an extra 1-2 days to process.
Ships from and sold by Amazon.com. Gift-wrap available.
  • On-unit temperature control
  • LEDs indicate active element and standby mode
  • Standard 1/2" water connection
  • Rugged brass/copper heat exchanger
  • Modulating power
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6 new from $169.99 10 used from $155.05

Frequently Bought Together

Rheem RTE 13 Electric Tankless Water Heater, 4 GPM + Siemens Q260 60-Amp 2 Pole 240-Volt Circuit Breaker
Price for both: $187.15

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Product Information

Technical Details
Part Number RTE 13
Item Weight7.4 pounds
Product Dimensions7.2 x 7.2 x 7.2 inches
California residentsClick here for Proposition 65 warning
Item model numberRTE 13
Size4 GPM
Item Package Quantity1
CertificationEnergy Star
Warranty DescriptionParts warranty: 1 year. Heat exchange warranty: 10 years. Warranties are only vaild if unit was installed by a licensed technician
  
Technical Specification
Additional Information
ASINB003UHUSGQ
Best Sellers Rank #1,196 in Home Improvement (See top 100)
Shipping Weight7.4 pounds (View shipping rates and policies)
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableMay 19, 2010
  
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Product Description

From the Manufacturer

Continuous hot water on demand. 4 GPM. Ideal for point-of-use applications. Compact design fits almost anywhere. 13 kw, 240 v.

Product Description

Ideal for Point-of-Use Applications Continuous Hot Water on Demand Energy Efficient Compact Design - Fits Almost Anywhere On-Unit Temperature Control LEDs Indicate Active Element and Standby Mode Standard 1/2" Water Connection Rugged Brass/Copper Heat Exchanger Applications Homes Apartments Condos Hospitals Hotels Boats Restaurants Offices Laboratories ...anywhere hot water is needed! Model: RTE 13 Length: 10 Width: 7-1/4 Weight: 8 ELECTRICAL SPECIFICATIONS KW: 13 VOLTS; REQ.Breaker: 60 Double Pull; MAX POWER(AMP): 54 AWG WIRE: 6 Minimum Activation Flow rate(GPM): 0.4 Maximum Flow Rate(GPM): 4

Customer Questions & Answers

Customer Reviews

Very easy to install; just make sure to hire a good electrician.
simarseille
Provides all the hot water we need even while Running the shower, the dishwasher and the bathroom sink.
ja1960
I love taking long showers and this thing has never run out of hot water.
R. Henrickson

Most Helpful Customer Reviews

150 of 157 people found the following review helpful By PsychicMike,com on June 12, 2013
Verified Purchase
The Rheem RTE “tankless” water heater is ingenious and the energy savings will pay for both the unit & install costs in only 17 months vs. keeping my 50 gallon electric tanked water heater.

I'm a mechanical engineer and was drawn to the unit's energy savings and ultra-compact size (9 x 10 x 5 inches {yes inches}). You likely won't believe it can provide you the hot water based upon it's small size. Booboo – you're wrong.

Why it works for me:

1. I'm a single person, take 1 shower a day, and do 2-3 loads of laundry a week, plus dishes.
2. I have a low-flow (1.5 GPM) [gallons per minute] water-saver shower head in my bathroom, saving water and also reducing the need to heat larger water flows required by standard shower heads generally at 2 - 2.5 GPM. However, even if you have a standard shower head – this unit will do you fine since it is rated up to 4 GPM.
3. A new tanked water heater (gas or electric) is $400 + $375 install costs. This unit is $193 + my $375 install costs to run a 60 AMP electric service and plumbing installation for the unit by an electrician/plumber.
4. It's tiny size (you won't believe it can work) frees up a storage space the size of the old heater.
5. Instead of having it on the highest heat setting, I set it to only 60% of the highest heat setting so that this setting provides me a very comfortable warm/hot shower water temperature without turning on the cold at all – therefore, heating only what I use (not blending overly hot with cold water) – further saving energy. I just set my clothes washing machine on “hot” and actually it is therefore at my hot/warm shower setting. Again, reducing electricity while working fine for clothes and dishes.

Financial Return on Investment:

1.
Read more ›
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57 of 57 people found the following review helpful By RAS on April 6, 2012
Verified Purchase
Rheem RTE 13 Electric Tankless Water Heater, 4 GPM
I just finished installing this water heater in my yoga studio. I have a powder room and an outside shower, with a laundry sink in the garden shed. This heater is amazing. I have it set on "medium" and the water is plenty hot and almost instantaneous. I have used the shower a few times and not run out of hot water. Plenty of volume for my needs. It is about the size of a Webster's dictionary and very easy to mount. Be aware that you need to run at least 3' of copper tubing from both sides of this thing so if you have plastic pipe you will have to make modifications. Also, you need to have enough electric service to handle a 240v, 60A breaker. It says to use 6 ga. wire, but the pigtail on the unit is 8 ga. Use your own judgement here.
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111 of 119 people found the following review helpful By marshallf3 on October 24, 2010
Verified Purchase
I expected a unit of this size to put out hotter water when flowing to a single sink. It's useable but not as good as others I've used. I'd hate to think of what the lower wattage models would do.

It also has the annoying habit of occasionally switching on for a few seconds even when not in use, there's no reason for this to keep the few ounces of water it keeps inside already warmed up.
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167 of 187 people found the following review helpful By B. Costello on April 14, 2011
The first unit I installed started to leak after 2 days - the joint between the two heating chambers. Rheem sent a replacement. The second unit turned on spontaneously - when the faucet was closed and caused a massive build up of pressure and then fried the control board. Fortunately I caught the unit turning on and opened the faucet - it was like a giant espresso machine. I have no doubt it would have exploded had it not been caught in time. Rheem sent a second replacement. The third unit, same problem as the second. This time my wife heard noises from below the sink and ran to the breaker to turn it off, not before one of the elements inside burnt out. These units are dangerous. I spoke at length to Rheem customer service who weren't too bothered and said if I thought there was a problem, I should write to customer service. These units could kill somebody or serious burn - steam burns are the absolute worst! Stay clear
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57 of 61 people found the following review helpful By PaulStLMO on July 13, 2013
Verified Purchase
I wanted to use this atleast a couple weeks before reviewing it. First off, I live alone, but in a 3 bathroom house. I have been keeping 50 gals of water hot in my basement for 25 yrs and finally decided to wake up. I installed this heater as a whole house heater in the basement where my old tank heater was. I was ready to deal with less than super hot showers, but I am amazed how well this works in both 1st floor bathrooms (1 tub, one shower), and even the 2nd floor bath(shower). Hotter water than I can tolerate in each one. BUT I DID LEARN THIS! I bought a 1.25 gpm shower head figuring I better cut back from my 2.5+ heads with this much smaller heater. WRONG! The first floor shower was hot and cold because i wasn't pulling enough hot water to keep the heater on. I then tried a 2.0 gpm in the downstairs shower. PERFECT. Consistent water as hot as I could want it (and I do not have the heater at full steam). Knowing the 2nd floor shower would have less pressure, I left the 2.5 gpm head on there, and again, perfect shower, no temp changing, hotter than I needed, and lasts forever if wanted. It still takes the same amount of time for hot water to get to my 2nd floor. I have always preferred a 5 min shower with a good shower head vs. a 10 min shower with a trickling shower head, so I do not think I am wasting any water. AGAIN, I am one person in this house, and have no problem NOT doing laundry, showering, and/or dishes at the same time. A couple or family could be perfectly fine with this heater if they could aviod doubling up on water usage. Not really that hard in my book, but your call. I also insulated ALL exposed pipes in my basement, under sinks, and some in the walls to help keep the heat in the pipes.Read more ›
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