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Internet # 205610803

Model # ECO MINI 4

4 Gallon Electric Mini-Tank Water Heater

$161.06
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  • Stores up to 4 gallons of hot water
  • Plugs into a standard 120V outlet
  • Requires no venting
  • View More Details

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Product Details

About This Product

Have hot water when you want with this EcoSmart Eco Mini-tank water heater. This lightweight, compact unit plugs into a standard 120V outlet. Perfect for your garage, outdoor kitchen or recreational vehicle, it delivers hot water right where you need it. You can save water by simply tapping into the water line and installing the heater directly at the sink, so you don't have to wait for hot water to reach the faucet. It eliminates the need for costly recirculating lines and pumps. If you don't want to wait for hot water but need more volume, install the heater in-line with a larger hot water source, such as a tankless heater or a storage tank heater.

Highlights

Product Information

Internet # 205610803

Model # ECO MINI 4

Specifications

Dimensions: H 17.5 in, W 16.25 in, D 13 in

Dimensions

Product Depth (in.)

13 in

Product Height (in.)

17.5 in

Product Width (in.)

16.25 in

Water Connection Size (in.)

1/2 in

Water Connection Size (in.)

1/2

Details

Amperage (A)

12 A

Application Type

Point of Use

Fuel Type

Electric

Household Size

1-2

Indoor/Outdoor

Indoor

Nominal Tank Capacity (gallons)

4 gal

Pack Size

1

Product Weight (lb.)

22 lb

Required Volt Connection

120 volt

Returnable

90-Day

Tank Warranty

6 Year

Uniform Energy Factor

0

Water Heater Features

Temperature Pressure Relief Valve, Wall Mounted

Water Heater Profile

Compact

Wattage (watts)

1440 W

Warranty / Certifications

Certifications and Listings

ETL Listed, NSF Listed, UL Listed

Part Warranty

2 Year

Questions & Answers

Will the 6gallon unit support a shower without a tank heater
ByJul 16, 2026
1 Answer | 
Answer This Question

Hi, This unit is meant as a point‑of‑use booster or small sink/shower supply, not as a whole‑home tank replacement. It’s not intended to be the sole hot‑water source for regular household showering. Derius

By|Jul 22, 2026


    Can the size unit be used for 1 person to take a shower If nothing else is running? And how much of an amp circuit does this have to be hooked to?
    ByJul 8, 2026
    1 Answer | 
    Answer This Question

    Hi, The ECO MINI 2.5 can support a single short shower, but only when paired with a tankless or main hot‑water source. By itself, the 2.5‑gallon tank is too small to provide a full shower from stored hot water alone. Derius

    By|Jul 14, 2026


      Will this go in a camper
      ByJun 25, 2026
      1 Answer | 
      Answer This Question

      Hi Karen, Yes, the EcoSmart ECO MINI 6 (6‑gallon mini‑tank) can be installed in a camper as long as the camper’s electrical system can support it and you have space for it. Derius

      By|Jul 1, 2026


        How long is the power cord?
        ByJun 17, 2026
        1 Answer | 
        Answer This Question

        Hi Vince, Based on the information you provided, the approximate length of the power cord on this model is 3-4ft. Derius

        By|Jul 1, 2026


          what is the amp required
          ByJun 6, 2026
          1 Answer | 
          Answer This Question

          Hi Scotty, The ECO MINI 2.5 draws 12 amps at 120 volts. Derius

          By|Jun 16, 2026


            Can i use in between bathroom and tankless heater ?
            ByMay 30, 2026
            1 Answer | 
            Answer This Question

            Hi, The ECO MINI 6 may be used between a bathroom and a tankless heater. It can work as a buffer tank to provide instant hot water and prevent temperature fluctuations. Derius

            By|Jun 1, 2026


              What is the total height of the unit including the T&P valve?
              ByMay 26, 2026
              1 Answer | 
              Answer This Question

              Hi Bob, Based on the information provided, the approximate total height including the T&P valve: 19.5 inches. Derius

              By|May 28, 2026


                Is it cost efficient for water and electric usage?
                ByApr 16, 2026
                1 Answer | 
                Answer This Question

                Hi Mark, The ECO MINI 6 is cost‑efficient for both water and electricity when used as a point‑of‑use heater. It reduces water waste and uses relatively little power. Derius

                By|Apr 21, 2026


                  Viewing 1-8 of 238

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 470 reviews
                  • 92% recommend this product
                  Filter by:
                  Showing 1-10 of 470 reviews
                  The installation was easy since it was replacing a failed unit. The interface was more simple than the unit it replaced. It works as the precious unit did. I like that it has a power indicator AND a Heater On indicator. I wish the warranty was a lot longer than five years. Like 25 years. I would pay extra to not have to touch it again.
                  by
                  Response from EcoSmart TeamJul 30, 2026
                  Hi,

                  Easy installs are always a win, and it’s great that this mini‑tank heater slotted right in where the old one failed. The simpler interface and the separate power and heater‑on indicators really do make day‑to‑day use clearer. Wanting a longer warranty makes sense, five years feels short for something you’d prefer to “set and forget.” A lot of people would gladly pay extra for a truly long‑life option.

                  Derius ecosmartus
                  Very easy to install. Works great.
                  by
                  Response from EcoSmart TeamMar 26, 2025
                  Hi,

                  Thank you for your positive feedback! We're glad to hear that the mini-tank water heater was easy to install and is working great for you. If you have any other questions or need further assistance, feel free to reach out. Enjoy your hot water!

                  Derius ecosmartus
                  • Verified Purchase
                  Easy to install great price and free delivery you can't beat it! ?
                  by
                  Response from EcoSmart TeamDec 4, 2024
                  Hello,

                  Thank you for the 5-star review and for choosing Ecosmart for your home!

                  Isaiah ecosmartus
                  • Verified Purchase
                  Easy hook up
                  Got this for fifth wheel RV that has an electric tankless hot water heater that doesn’t appear to be working and I don’t have time to troubleshoot. This thing was easy to connect to my shower and heats up the water just fine. Won’t be taking any long steamy showers but as long as you do navy showers the you’ll have just enough hot water to get you rinsed off. Overall happy with the product but will be looking for a more permanent solution
                  by
                  Response from EcoSmart TeamApr 5, 2024
                  Hello,

                  Ecosmart thanks you for your 4-star review. We are glad you found a solution for your RV's hot water needs even if it may be a temporary fix. If you have any questions on this model or other models, feel free to reach out to our Technical Support team at (877) 474-6473 between 9 A.M. and 5 P.M. EST. Thank you!

                  Isaiah ecosmartus
                    • Recommended
                    1 found this review helpful
                    Excellent mini water heater.
                    It works well in my Mobile Grooming Van.
                    by
                    Response from EcoSmart TeamApr 19, 2024
                    Hi,

                    This is great to hear! We are glad the 6 Gallon Electric Mini-Tank Water Heater is working well in your mobile grooming van. It’s always good when a product fits perfectly into our specific needs.

                    Derius ecosmartus
                    • Verified Purchase
                    1 found this review helpful
                    I don't recommend the 1.5gal. unit for anything.
                    With temperature dial set at ~50% you will get practically hot water ~115deg.F in the beginning of the cycle. The water temperature needs to drop to 69deg.F for the heater to turn on again. This means the temperature deadband is ~50deg.F. The standby water temperature in the tank can range anywhere between 69 to 115degF.
                    by
                    Response from EcoSmart TeamMay 1, 2024
                    Alex,

                    It seems like you’re sharing information about a 1.5 Gallon Electric Mini-Tank Water Heater that you found at The Home Depot. Here’s a summary of the information:

                    When the temperature dial is set at approximately 50%, the water heater produces hot water at around 115°F at the start of the cycle.
                    The water temperature needs to drop to 69°F for the heater to activate again. This indicates that the temperature deadband (the range of temperature where the heater will not activate) is approximately 50°F.
                    The standby water temperature in the tank can range anywhere between 69 to 115°F.
                    This information could be useful for someone who is considering purchasing this water heater and wants to understand its operation and performance.


                    Derius ecosmartus
                      6 found this review helpful
                      I just wish the outlets coming out of the hot...
                      I just wish the outlets coming out of the hot water heater were able to connect straight to the faucet lines. I had to use a lot of tape and pipe thread sealant to stop it from leaking.
                      by
                      • Verified Purchase
                      3 found this review helpful
                      Great product and size for quick hot water under the kitchen sink.
                      Great product and size for quick hot water under the kitchen sink.
                      by
                      • Verified Purchase
                      • Recommended
                      This was just what I needed. Saved me lots of money. Energy efficient. Instant hot water. Fit und...
                      This was just what I needed. Saved me lots of money. Energy efficient. Instant hot water. Fit under sink perfectly.
                      by
                      • Verified Purchase
                      • Recommended
                      I installed this for a sink I put in the garage. Seems to work fine, you will need to buy a cord ...
                      I installed this for a sink I put in the garage. Seems to work fine, you will need to buy a cord plug to be able to plug into wall.
                      by
                      • Verified Purchase
                      • Recommended
                      1 found this review helpful
                      Showing 1-10 of 470 reviews

                      Compare Key Features

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                      Product Snapshot

                      Ideal for small households, this 4 gallon mini-tank water heater offers point-of-use hot water with a 6-year warranty.
                      Ideal for small spaces, the EcoSmart ECO MINI 1.5 Gal. Electric Mini-Tank Water Heater offers on-demand hot water with easy installation.
                      Ideal for small households, this 6 gallon mini-tank water heater offers point-of-use hot water with a 38-minute recovery time.
                      Ideal for small households needing instant hot water. Compact, easy install, 6-year tank warranty.

                      Capacity

                      4 gal
                      1.5 Gal
                      6 gal
                      4 gal

                      Heating Power

                      1440 W
                      1440 W
                      1440 W
                      1300 W

                      Recovery Rate

                      24 minutes
                      8 minutes
                      38 minutes
                      27 minutes

                      Temperature Control

                      Safety Features