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4.0 Gal. 6-Year 1500-Watt 120-Volt Point-of-Use Mini Electric Water Heater

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  • Easy under-sink installation puts water right where you need it
  • Lightweight, compact design is easy to handle and install
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
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Product Details

The Ariston/Bosch 4 Gal. Electric Water Heater has a 4 Gal. mini tank that fits under your sink to provide hot water right where you need it. The heater plugs right into a 120-Volt outlet and has a lightweight, compact design that's easy to handle and install. A glass-lined tank offers great insulation, while the heater's fast recovery rate eliminates long waits for hot water. A temperature-and-pressure relief valve enhances your safety.
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Specifications

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Questions & Answers

25Questions
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Q:I have a 4gl.Ariston electric water heater.It works great but it's not enough hot water to take a decent shower is there anyway to get more longer supply of hot water
by|Nov 2, 2021
1 Answer
Answer This Question

A:  Here are a few options. 1) Make sure you are using a low flow shower head. 2) Make sure the unit is adjusted to its highest setting. 3) If you have had the unit for a few years, you "may" get better performance by changing out the heating element to a new one. While you are at it, change the anode rod. The improvement will largely depend on how mineralized your water is. The more mineralized, the better your performance by changing out these components. 4) Upgrade to our model ES8 which has over 7 gal. of hot water. 5) Adjust the Cold/Hot mix at the faucet for greater use of Cold (ie. colder shower - sorry, that one is probably the least favorite.)

by|Nov 5, 2021
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    Q:How do you winterize this unit if it doesn't have a drain plug?
    by|Jul 8, 2019
    1 Answer
    Answer This Question

    A:  There are three ways to drain this unit. Please see the manual that is downloadable from this product page to determine the best method of draining for your specific application.

    by|Feb 10, 2020
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      Q:How long does the water stay hot?
      by|Jun 16, 2019
      1 Answer
      Answer This Question

      A:  Based on a 1 GPM kitchen faucet, the water will remain hot for approximately 2 minutes before noticing a temperature drop.

      by|Jun 17, 2019
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        Q:what should I check if it does not heat the water
        by|Dec 15, 2018
        0 Answer
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        Showing 1-4 of 25
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        Customer Reviews

        3.6 out of 5
        (62)
        • 3.6
          out of 62 reviews
        • 71%recommend this product
        Filter by:
        Showing 1-10 of 62 reviews
        easy to install and seems to be working great
        this product was easy to install I couldn't hide it but it still looks good it seems to be working great if you need hot water somewhere I recommend this product it's been a few weeks and is doing the job I needed it to do
        by
        • DIY
        • Recommended
        4 found this review helpful
        This is a replacement.
        It was easy to install because I was replacing one that failed. It was 4 1/2 years old. I hope this one last longer.
        by
        • Pro
        • Verified Purchase
        3 found this review helpful
        Great Little Water Heater
        Installed under the counter for the source of an instant hot water tap. Used quick-connect fittings so removing the lines to drain it & change the element when necessary will be quite simple (it has no drain valve). Will install one in a bathroom remodel that's at the other end of the house from the water heater so no waiting for a hot shower.
        by
        • DIY
        • Verified Purchase
        • Recommended
        7 found this review helpful
        Good value, reliable, long life
        Very easy to install - took longer to clear space under kitchen sink than to install heater. After some experimenting, we set heat a little hotter than the "ideal" marking. Gives very hot water almost instantly, and plenty for doing large pile of dishes. Also serves dishwasher. We seem to always turn water to hot when at the sink and have not been disappointed. The best we can remember, we have had this unit under our sink for around 10 years. In that time, we have not had a single problem with it and have not done any maintenance. This morning water was not hot, so turned control switch off then back on. Worked great all day, had to turn switch again in evening. Don't know if this is permanent or not, but after reading other reviews I think we have done well with this unit. Will definitely get another if this one stops. May put this one under sink in garage.
        by
          • Recommended
          1 found this review helpful
          This was my second Ariston (Bosch) point of use water heater. Works great while they work. Both...
          This was my second Ariston (Bosch) point of use water heater. Works great while they work. Both started leaking after 2 years. The warranty dictates that you change something inside the heater every year to maintain the warranty. I will find another brand next time.
          by
            1 found this review helpful
            Loved it for 6 1/2 years
            After 6 1/2 years it stopped working but I sure loved it every day! Plenty of really hot water flow, fast recovery, totally reliable and never a problem until one day after 6 1/2 years it died :(. Will get a new one!
            by
              • Recommended
              Review Update August 2014 to May 2016
              I've now had 2 units for almost 2 years and I have never had any issue with them at all. For better or worse, I haven't looked into maintenance at all (which of course I don't recommend), but each still provides hot hot water, one at the kitchen sink and dishwasher, and the second under the bathroom sink.
              by
              • DIY
              • Recommended
              Unreliable
              The first one had a six year warranty. I have just requested the fourth (4th) water heater, since the first three failed during the last five years. At $200 per removal and installation, the cost is excessive. Very unreliable.
              by
                1 found this review helpful
                Nearly useless
                It heats a VERY small amount of water to wash a few dishes then it turns cold. One would assume that I could actually get 4 gallons of hot water but it mixes with the incoming cold and it becomes lukewarm quite quickly. If you are using water that comes from a well and it's cold this will take forever to get it hot. I regret that I threw away the box as I would have surely returned it.
                by
                • DIY
                Does not last long
                This unit heats fast and provides a good amount of water for light jobs. We bought it to replace a tankless natural gas water heater that failed due to cold air coming down the flu pipe causing the tankless heater to freeze and rupture. We thought that having a small electric unit like this would be more reliable but still sufficient for our sink water and dishwasher. It works fine for that and we rarely run out of hot water. We also love the instant hot water since it could not be any closer to the faucet. However after 4 years we've had to replace this Ariston unit twice due to leaking tanks ( we're on number 3 now) so it is NOT hassle free. Not sure on what planet will the tank last 6 years per the warranty. I've had water damage twice now due flooding. Although not called for in the instructions, this time I've placed the unit in a water heater pan with a drain!
                by
                • DIY
                • Recommended
                Showing 1-10 of 62 reviews