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Bosch Ariston GL6+S Point-of-Use Electric Mini-Tank Water Heater

by Bosch
4.5 out of 5 stars 89 customer reviews
| 29 answered questions

List Price: $243.00
Price: $196.81 & FREE Shipping. Details
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Include installation | Estimate $230.93 | ZIP
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Water Heater Replacement - Electric

What's included See more details
  • Replacement of 1 water heater with a customer-supplied heater
  • Removal and disposal of old water heater
  • Clean up and testing of the new water heater
  • Moving water heater location is not included

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  • Pro will contact you within 1 business day to schedule
  • Kick back and only pay when the job is done
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  • Keeps 7 gallons of hot water ready to go and draws only 12.5AMPS
  • Must be hardwired into 120V
  • Can be installed under the sink, on the floor or mounted on the wall
  • A Pressure relief valve is included
  • Ariston GL6+S replaces the Ariston GL6+, but the GL6+S does not come with a power cord while the GL6+ did
See more product details
10 new from $196.81 2 used from $148.32
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$196.81 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Bosch Ariston GL6+S Point-of-Use Electric Mini-Tank Water Heater
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  • SHURFLO (255-313) 1/2" Twist-On Pipe Strainer
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  • SHURflo 4008-101-E65 3.0 Revolution Water Pump
Total price: $273.16
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Product Description


The Ariston 6-gallon point-of-use electric mini-tank water heater eliminates the wait time for hot water to come from one or two sink faucets. You can install the heater independently or in-line with a larger water-heating source. You need no hard wiring to power your unit; simply plug it into any standard outlet and this heater's ready to go. The glass-lined tank ensures long life, and the superior insulation provides quick recovery and greater energy efficiency. This 120-volt, 1500-watt water heater weighs 30 pounds and measures 14.5 x 17.5 x 17.5 inches. Ariston backs its heater with a manufacturer's 6-year limited warranty for the heat exchanger and a 1-year limited warranty for parts.

From the Manufacturer

Installing an Ariston electric mini-tank water heater under the sink puts hot water right where you need it at the point-of-use. Lightweight and compact this heater is available in three space-saving sizes: 2.5, 4, and 6+ gallons. These heaters are aesthetic on the outside, glass-lined on the inside, and offer superior insulation for higher efficiency.

Product Information

Technical Details

Part Number GL6+S
Item Weight 29.5 pounds
Product Dimensions 14.5 x 17.5 x 17.5 inches
Origin China
Item model number GL6+S
Voltage 120 volts
Item Package Quantity 1
Batteries Included? No
Batteries Required? No
Warranty Description 6-year warranty, 1 year on parts

Technical Specification

Product Warranty: For warranty information about this product, please click here [PDF ]

Additional Information

Customer Reviews
4.5 out of 5 stars 89 customer reviews

4.5 out of 5 stars
Best Sellers Rank #24,067 in Home Improvements (See top 100)
#33 in Home Improvement > Rough Plumbing > Water Heaters & Parts > Water Heaters
#1,996 in Home Improvement > Contractor Supply
Shipping Weight 35 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available September 14, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here [PDF ]

Customer Reviews

Top Customer Reviews

By Thure on September 23, 2008
Verified Purchase
I used this for a replacement water heater in my travel trailer. It did not fit in the original space, so I installed it in the closet space and connected it with the original plumbing with plastic hose. You have to be plugged in to use it, but other than that it works great and at a cost of about 2/5th of what an RV water heater would cost.
UPDATE: 4 years and still going strong with the unit I installed in my travel trailer. I've spent about 2 of the last 4 years living in the trailer on job sites, so it has had a reasonable workout.

About a year later I purchased a second one of these. I used it to feed a temporary shower in my basement while I was doing a bathroom remodel. Worked well for that use, too. That unit is now installed under the kitchen sink. It saved a long run from the house water heater to the kitchen, which saves quite a bit in this cold climate, and I don't have to wait for the hot water to reach the kitchen. In addition, the switch on the front of it allows me to switch it off when I'm going to be away from home and save even more.

Recovery on these water heaters is about an hour.

Needless to say, I'm very pleased with the performance and service and I'm about to order a third unit to run the washing machine.
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Verified Purchase
This is our 2nd Ariston heater - the first is a 4 gallon under the kitchen sink. We got this one to sit in our basement bathroom and feed it, the main floor bathroom sink and a future 1/2 bath on the 2nd floor. It just makes so much sense to keep a small amount of hot water ready to use right near the fixture. That way you don't have to waste a bunch of water if you need hot water. These seem very well insulated, so I think that the standby losses are negligible. Our main heater is a gas tankless, and these really help improve the performance for intermittent uses such as washing hands or dishes. I just put this inline with the tankless, so that it can "smooth" out our hot water. The tankless works best for steady uses, such as showers and filling a dishwasher. Adding one of these Aristons gives you the best of all worlds.
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I have 2 tankless water heaters in my house (one on each end of the house). I added a 6 gallon tank to one of them to see if it would allow me to get hot water faster while the tankless water heater starts to heat up. I purchased an A.O.Smith for this and it worked great. For 4 years it has plugged away and I've never thought about it for a second. I've never had to touch it even one time so it's covered in dust and spider webs. I love it.

Two years later, I asked the plumber to put the exact same water tank into my house on the other tankless water heater. Instead, he installed this one by Ariston (Bosch). After I saw what he did, I told him this wasn't the same brand, but he assured me that this was far better. It was *NOT* better.

From the very beginning, the thermostat circuit kept triggering and shutting off because it said the water was too hot. Even when I turned it down to a very low temperature, it kept triggering. I would have to run down the basement and reset the tank. After many months of this and calls to the plumber, he told me to call their customer service line. Ariston (owned by Bosch) sent me a new thermostat and told me to install it. I installed it with some difficulty because the instructions on how to do this were terribile.

It fixed the problem for about 6 months, then it started triggering again. At first occasionally. Now it triggers every day. I get lots of exercise running the stairs. I assure you that I'm monkeying with this thing so much that it doesn't have any dust or spider webs on it. It's squeaky clean.

I called tech support and asked for a new thermostat again. They told me that my warranty expired and I was on my own. The guy on the phone, Scott, was rude and condescending.
Read more ›
8 Comments 57 of 60 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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By Jon on September 21, 2008
Verified Purchase

I've purchased 2 of these for two different purposes. Both are GREAT! Easy to install (I am boarder-line incompetent when it comes to plumbing and even I was able to do this with only a couple trips to the local hardware store).

The quality does not seem all the great ... but for the price and so far (one I've had and used for almost 2 months, the other almost a month) they work fine and there are no problems.

FACTUALLY: It does seem to take a good half hour or more to heat up and re-heat once the hot water is used. It would not in any way be useful as a tank-less water heater since only lukewarm water at best comes out as the tank reheats. Also, I live in Southern California and it is the middle of summer. I don't know how long it will take and it's performance either during the winter when tap water is usually colder or what would happen in colder climates with near freezing water coming into the tank.


1. In an extra bathroom with no hot water, it provides enough for a quick but good shower.
2. For a pet bathtub with no access to hot water, it make a GREAT warm bath for my now VERY HAPPY DOG!
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Bosch Ariston GL6+S Point-of-Use Electric Mini-Tank Water Heater
This item: Bosch Ariston GL6+S Point-of-Use Electric Mini-Tank Water Heater
Price: $196.81
Ships from and sold by Amazon.com

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