Bosch GL2.5 Ariston 2-1/2-Gallon Point-of-Use Indoor Electric Mini-Tank Water Heater

by Bosch

Product Description

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 Details

Water Heater Manual [PDF]

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Choose the Right Water Heater. [1.16mb PDF]

• Product Dimensions: 10.5 x 14 x 14 inches
• Shipping Weight: 20.2 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
• ASIN: B0006GVO12
• Item model number: GL2.5
• Average Customer Review: 4.1 out of 5 stars  See all reviews (70 customer reviews)
• Amazon Best Sellers Rank: #2,832 in Home Improvement (See Top 100 in Home Improvement)
  • #6 in Home Improvement > Rough Plumbing > Water Heaters & Parts > Water Heaters

Customer Reviews

Most Helpful Customer Reviews

132 of 138 people found the following review helpful:

1.0 out of 5 stars Two Fail in 2 & 3 years, January 28, 2010

By 

Keith M. "BSME Ohio State" (Dallas Texas) - See all my reviews

This review is from: Bosch GL2.5 Ariston 2-1/2-Gallon Point-of-Use Indoor Electric Mini-Tank Water Heater (Tools & Home Improvement)

I bought two GL2.5 water heaters in 3/2006 & installed one for a master bedroom and the other for the kitchen sink w/a T to dishwasher. Very nice to have hot water fast. Otherwise have to wait for it to come from attic quite some distance. BUT the directions suggest CLEANING it out every year. This pretty much means uninstall it if in a tight location! Turn upside down to drain, descale element and REPLACE ANODE! Every YEAR! Have you ever done that with a water heater... and they last 10 yrs. no problem! Well here, I did not do that & the first started to fail in late 2007. The thermostat breaker would kick off & I would reset it. Then that stopped working and I ordered a replacement thermostat in 4/2008 from Grainger. That worked & then we had our main circuit breaker kicking off easy. I think it was shorting through the mineral deposits! Unknown to me at the time... Then the tank fails mid-2009. Soon in Fall 2009 the 2nd unit had a tank failure (fyi, it never had the breaker or thermostat trip first). Both units were a mess to clean up. Lucky we were home. These are not safe w/o access and the recommended pan. The pan should be deep and have a drain & water alarm. The yearly service MUST be done. Just not worth it so I put everything back the way it was originally. Why not use a better tank and design? How they are now is asking for trouble unless you are very good w/scheduled preventive maintenance.

120 of 125 people found the following review helpful:

5.0 out of 5 stars The solution for point-of-use warm water, March 11, 2007

By 

Michael L. Wiersma "ksmichael" (Springfield, MA United States) - See all my reviews
(VINE VOICE)   

This review is from: Bosch GL2.5 Ariston 2-1/2-Gallon Point-of-Use Indoor Electric Mini-Tank Water Heater (Tools & Home Improvement)

I live in the northeast. It gets cold here. My basement is warmer than outdoors, but, despite copiously wrapping my pipes in insulation, I get cold water in my kitchen sink for something like 8-9 seconds (at full blast) before the water becomes passably warm. Working from home, having rambunctious teenagers and more than a few dogs, I do a lot of cleaning and hand-washing. I wasted a lot of water (water which was previously heated at some expense) trying just to get a little warm water. Worse, the dishwasher didn't change water fast enough to keep the water in the line warm, so the dishes would get rinsed in cold water every time, even if you use the water heat option for the wash. Certainly this is not a big problem, but I lived with it for five winters and decided this was the time to do something about it.

I purchased this point-of-use water heater (the smallest of three versions) so that it would fit underneath my kitchen cabinet. I've been using it for a few days now, and am thrilled that I get warm water every time, day or night, whatever happens, in about 1-2 seconds, max.

Now the challenges. It was relatively easy to hook up, as long as you can, for instance, install a new faucet, and are passably familiar with plumbing sizes and patch cords, like between your water line and sink, or between the water line and toilet, etc. I bought a new one from the line to the heater, and another from the heater to the sink. The most time-consuming thing was the drive to the hardware store. Some relatively strong turns of the attaching points, a little contorting under the sink to reconnect the hot water faucet (and a little help from the "shop light",) and it's not an overwhelming task. Don't be shy or hesitant to look carefully for leaks. Better to make adjustments or do tightening sooner rather than later, after something gets potentially damaged.

Possibly more challenging might be having an electrical outlet that can be dedicated to the water heater, which takes 1500 watts, and will certainly blow your circuit every time if you try to combine it with a dishwasher, microwave, toaster, or anything else "thirsty" (most things are) in the kitchen.

I am very pleased with the thermostat in this product, and have done a lot of trial-and-error adjusting to make it the right temperature for me (warm, but it won't burn you.)

I do have a "main" water heater, which heats water for the house, so if I am using a lot of hot water, the main water heater takes over, basically. This is okay with me, as it's cheaper to use my main gas water heater, but not cheaper to run a lot of water trying to get it. This seems a good compromise and a good solution for me. I recommend this product for anyone with my situation who can resolve the challenges of the plumbing adjustment and electrical requirements.

While I have only used this product for a few days, I have not noticed a large spike in my electrical use, and it does not seem like this is going to cost me lots to use. Hopefully the savings from using less water and less hot water will cover some of the cost of the convenience.

32 of 32 people found the following review helpful:

5.0 out of 5 stars Great price, works great also!!, September 30, 2007

By 

G. Austin "vulcan" - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Bosch GL2.5 Ariston 2-1/2-Gallon Point-of-Use Indoor Electric Mini-Tank Water Heater (Tools & Home Improvement)

I hooked this up in the kitchen sink to avoid a 30 foot run from the main HWH. It took about 1 hour under the sink and another 30 minutes installing another power outlet. The heater works great. The 2.5 gallon supply is plenty to handle dishes and hand washes. I disconnected the main supply and have not missed it.