Model # AE-115

Internet #100092283

Store SKU #293562

Store SO SKU #1000895768

null 17.25 kW 220/240 Volt 3.6 GPM Point-of-Use Electric Water Heater

17.25 kW 220/240 Volt 3.6 GPM Point-of-Use Electric Water Heater

  • Same-day installation in most areas. Call 1-855-400-2552 by noon.

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Product Overview

Ideal for replacing your electric storage tank water heater in some applications, or supplementing a water heating system, the Bosch/PowerStar WH17/AE115 electric tankless water heater is compact and powerful and can installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs and substantial space savings. The Bosch/PowerStar WH17/AE115 electric tankless water heater is built to last with solid copper heat exchangers, and can help provide homeowners with a lower energy bill.

  • Compact, lightweight tankless electric water heater
  • Zero standby loss - only heat the water that you need
  • Solid copper heat exchanger
  • Built-in flow sensor ensures constant output temperature
  • External temperature control knob
  • Thermal cut-out for safety - protects elements from damage
  • See model AE-125 for colder climate applications or for more power in warmer climates
  • Small product footprints fits in tight spaces
  • Flow sensor to provide a constant output temperature
  • 220 / 240 Volt - 80AMP
  • Requires 2 double pole 40AMP
  • 3/4 in. water connections
  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs

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Name 7.2 kW Electric Water Heater Booster Tempra 24 Plus Advanced Flow Control and Self-Modulating 24 kW 4.68 GPM Electric Tankless Water Heater 18 kW 2.74 GPM Smart Pool Electric Pool Water Heater 17.25 kW 220/240 Volt 3.6 GPM Point-of-Use Electric Water Heater
Brand EcoSmart Stiebel Eltron EcoSmart
Ratings (15) (48) (3) (31)
Flow Rate @ 45 F Rise (gallons/min) 1.09 3.64 2.73 3.6
Wattage (watts) 7200.000 24000 1800 17250
Indoor/Outdoor Indoor Indoor Indoor Indoor
Water Heater Features Wall Mountable Overheat Protection,Wall Mountable Wall Mountable Overheat Protection
Certifications and Listings ANSI Certified,ETL Listed,NSF Listed 4-UL Certified,CSA Listed,ETL Listed 1-UL Listed,CSA Listed,ETL Listed 1-UL Listed,CSA Listed
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Warranty / Certifications

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Customer Questions & Answers

I need a water heater to replace the one upstairs it would be used for a bathtub and/or bathroom sink.

There is already a large regular water heater downstairs for the kitchen and downstairs bath. Would this work just for the upstairs?
Asked by: jjtrail
This should be fine - emphasis on "should". Keep in mind that for a bathtub you do have the same issue as with a regular tank. That issue being that it takes a while to fill a tub. This unit produces between 1.6 to 2.4 GPM (depending on the temperature of the water coming into the unit). So by the time the tub has filled, the first gallon of water has had a while to cool down and so has every gallon respectively. If you make your way to our web site (which I can't publish here) you will find a chart for this unit and your geographic location as it relates to incoming water temps. With this knowledge and knowing how many gallons you typically put into your tub, you can determine if this will be adequate.
Answered by: Bosch Thermotechnology
Date published: 2016-02-21

had hot water and now water is only warm...tankless heater is about 3 years old. could you tell me what the possible problem may be?

Asked by: sandy
I would suspect a possible inflow restriction at the screen, or a failure of a single heating element, in a dual element system.
Answered by: JVB737
Date published: 2015-11-07


will this unit be able to run a shower comfortably and a washing machine?
Asked by: Freax
Hello Freax and thank you for your question. You will be able to take a shower OR run the washing machine if you live in a warm climates with a high groundwater temperature. For more power in warmer climates or for colder climates, consider using model AE-125, which is designed to replace a 40-gallon tank to provide endless hot water throughout your home. See more information about this model here: Best wishes on your project.
Answered by: DesigningWoman
Date published: 2015-11-07
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Customer Reviews

17.25 kW 220/240 Volt 3.6 GPM Point-of-Use Electric Water Heater is rated 3.1 out of 5 by 31.
Rated 5 out of 5 by from Tankless Water Heater Bought power star tankless water unit two months back. Installation was not easy, had help from family and took about 4 days to be put in. I recommend anyone that lives in warm climate the AE-115 water heater. This model requires a 150 amp circuit breaker and 2 40 amp breakers which i believe is the standard for most homes. The next model would require you to have a 200 amp breaker and 3 40 amp breakers. The AE-115 uses a lot of power, about 60 amps which is more than most kitchens. But remember you are only using it for the time you are taking a shower. Running mutilpe items around the house has not givien me a problem, such as the A/C, Pool pump, wsher, dryer, and taking a shower. I also recommend that this item is used with a house hold of less than 5 and a family that doesnt take to many long showers. Than you can see a change in your electric bill, about $15-$25 less a regular water heater.
Date published: 2009-12-21
Rated 3 out of 5 by from Little dissappointing...but ok. I installed this heater to replace a standard 40 gallon unit that had a tank failure. I had always wanted to install a tankless unit but the cost was a little excessive in the past. This one seemed to be priced right so I took the plunge. The heater works fine with a few somewhat minor issues. Installation was simple (wall mounted) and I had no major problems. But be advised that this unit will require TWO 240 volt power lines instead of the one typically used by the standard heater. This could be a really big deal in some situations. As of the date this was written, my unit is being powered by only one and works fine though it sometimes "trip" the breaker or reset switch. I do not recommend this. The unit should be wired with two. This unit also requires a 40 amp breaker which required replacing the 30 amp in use at the the time of installation. Both changes in most cases will require an electrician which will for most add to the cost of installing the unit. Also be advised that the time to get hot water at the faucet was increased, but not dramatically. Maybe by another 10 seconds or so. For me , no big deal. What is a big deal though, and I believe for others as well, is the dramatic decrease in hot water flow. There was a significant decrease in the amount of flow from the tank heater to the tankless. About half would be a reasonable estimate. If you like strong hot showers, for example, you will not be happy. Be sure to compare, unlike I did, the gpm (gallons per minute) of your old unit to that of this unit or any other that you may consider purchasing. Changing my shower heads to low flow, high pressure types solved the "strong hot shower" issue and probably will save water and money as well. All in all I'm relatively happy with the unit and would purchase it again. I think the more expensive units would be a better choice but for me this unit is satisfactory.
Date published: 2009-06-22
Rated 5 out of 5 by from Very Satisfied Let me just start by this is the gift that keeps on giving! My family was having to trip the breaker to get our old 40 gallon tank water heater to turn on and then it would just run until it got too hot and shut down. My dad had installed one of these in his house and said that it had cut down on his electric bill a little, but I had no idea the impact it would have on mine. With a little common sense and around $600 from start to finish I was able to this project my self and it has paid for itself time and time again. Our electric bills were cut by 25% and it is great knowing that when we are not at home that there is not electricity running to a device that isn't neccessarily being used. I would reccomend this product to anybody who is looking to replace their water heater and doesn't want to shell out a whole lot of money in the process.
Date published: 2010-10-16
Rated 5 out of 5 by from AE115 If your house has at least 125Amp @ 240, and there is space in your breaker box for 2 240v circuits and the heater isn't too far from the breaker box the rest is pretty easy. At 20# the installation can be performed by 1 person. It worked right off the bat. I thought it would hum like an electric chair was being used, but it is quiet. I have electric solar panels on my roof, so now my hot water will be free. Replacing a tank gas heater, I should be more energy efficient and zero pollution. I have a small household and the amount of water is adequate.
Date published: 2010-08-21
Rated 2 out of 5 by from Would Advised Against This One I purchased this heater 14 months ago. Now out of warranty and one of the circuit boards burnt out. I contacted Bosch and the person was rude and could have cared less about my problem. I just wanted to replace the circuit board but he said they couldn't do that without seeing the unit first. Shipping it to them would not be cost effective. Plus the cost of the part was about the same as the unit. It was great while it lasted but I would expect it to last more than one year.
Date published: 2012-05-22
Rated 2 out of 5 by from Not so good at all I had the Ae115 for 3 years. This past Saturday Nov 23, 2013 the flow transducer ruptured and filled my condo. I called the company and they said they could not do anything. The inside of this product is plastic not like the other companies that have copper. I paid over 500 hundred dollars for this product and it lasted only 3 years. The tank that I replaced with this AE115 was over 20 years old. So all I can tell you buyer beware.... As you can see by the reviews on this page this is not a good product, so do some research and get something that is better.... Frank Rescigno
Date published: 2013-11-25
Rated 1 out of 5 by from marginal product works OK about half of the year when inlet water is warm, use low volume heads and throttle flow just to get lukewarm water most of the year, certainly not a whole house heater as sold
Date published: 2012-01-23
Rated 1 out of 5 by from Have bought 3 of your heaters, had to replace 2. Will not buy another until you have a better unit. Much too expensive to last only 3 yrs. No help from technical support plus was put on hold for over 50 minutes!!!
Date published: 2011-11-19
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