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thermoflow

Thermoflow Electric Mini Tank Water Heater, 4.0 Gallon 120V Corded Under Sink Small Hot Water Heater for Point of Use Instant Hot Water

    • Based on 1,001 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Apr 28
Order within 18 hours and 27 minutes
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Style: 4.0 Gallons


Features

  • Instant Sink Hot Water - 4 gallons capacity, point-of-use mini tank water heater fits under your sink to provide immediate hot water right where you need it. Eliminate time for hot water. Dimensions: 18H x 12.2W x 11D inches, 2.6ft cord Plugin to use.
  • Long life Service - This compact mini tank water heater use stainless steel tank to reduce corrosion and maintenance.
  • Save Energy - Fast recovery and thermal efficiency up to 98% using stainless steel heating element, 3-layer EPS foaming insulation reducing heat lost, provide you more hot water with less power power consumption.
  • Safe & Reliable - Over-heat protection, auto cut-off electricity if not hot water come out, IPX24 water proof, 2.6ft plug in cord, suit for kitchen, bathroom, bar, school, hospital, office and RV.
  • NOTES - Please verify that this model is the right size for your hot water needs and electrical requirements before purchase & installation. Dimensions: 18H x 12.2W x 11D inches; Weight: 14 lbs; Water connections: 1/2 inch NPT, Electrical requirements: 1.5 kW, 120 Volts. Max pressure: 150PSI. Nominal current: 13A.

Brand: thermoflow


Product Dimensions: 12.2"W x 18"H


Special Feature: Quickly Hot Water Supply, Compact Size Saves Space,Two Modes Optional, suitable for any season.


Color: White


Wattage: 1500 watts


Brand: ‎thermoflow


Product Dimensions: ‎12.2"W x 18"H


Special Feature: ‎Quickly Hot Water Supply, Compact Size Saves Space,Two Modes Optional, suitable for any season.


Color: ‎White


Wattage: ‎1500 watts


Voltage: ‎120 Volts


Maximum Temperature: ‎167 Degrees Fahrenheit


Efficiency: ‎High


Maximum Operating Pressure: ‎150 Pound per Square Inch


Maximum Pressure: ‎150 Pound per Square Inch


Mounting Type: ‎floor mount or surface mount


Is Electric: ‎Yes


Manufacturer: ‎thermoflow


Item Depth: ‎11 inches


UPC: ‎630792535352


Item Weight: ‎13.16 pounds


Item model number: ‎UT15


Size: ‎4 Gallons


Shape: ‎Rectangular


Maximum Power: ‎1500 Watts


Installation Method: ‎Floor-Mounted


Temperature Range: ‎45-167 Degrees Fahrenheit


Special Features: ‎Quickly Hot Water Supply, Compact Size Saves Space,Two Modes Optional, suitable for any season.


Included Components: ‎1X 4 Gallons mini tank water heater, 2X 1/2 inches brass bushings, 1X instruction manual


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: March 5, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great unit, odd control knob
Style: 2.5 Gallons
Review Image by Brian Brian
Hot water without the wait. Not only does it mean less waste waiting for the hot water getting to the sink from a primary water heater, but also makes doing quick tasks which require a little bit of hot water super easy. The temperature dial is a bit weird so have attached my interpretation for use as an undersink heater in a bathroom or kitchen. Bought two. Installation is easy. I used a 1/2 inch NPT (national pipe thread) flexible faucet connector much like the one which was installed under the sink except longer because of where I could fit the unit. I've been running them for a couple months with no trouble. EDIT: a few years later, both units are still working like new. Highly recommended. ... show more
Reviewed in the United States on January 18, 2019 by Brian Brian
    • buy a different brand!
Style: 2.5 Gallons
This corrected our dishwasher issues with a on demand hot water heater. Dishwasher actually works now instead of leaving slimy food and detergent all over our dishes. Install kinda sucked tho. The company needs to have a better solution to mounting the relief valve drain into existing plumbing. I looked at tons of options and I ended up just drilling and tapping a brass nipple into the existing drain next to the dishwasher drain. Sealed up w silicone to prevent leakage and it should be just fine for this purpose. Good upgrade for sure. Update: October 21, 2019. The unit has stopped heating water all together. Tried resetting unit at the reset button, disconnecting power, cleaning pressure relief valve, all to no avail. Hopefully I can get a warranties replacement but until I do(tried calling the company and emailing) I am going to lower my rating because it hasn’t lasted even a year lol. Update: December 9th, second unit was received and worked for a month or so. Same problem has occurred and unit has stopped working. Due to the time and mess installing and uninstalling this unit we will not be using it any longer. No refund from company either. Cheaply made, crappy heater. Awesome when it works but not worth it due to the inferior components it uses. I uploaded a picture of the heating element that failed internally twice. ... show more
Reviewed in the United States on July 18, 2019 by James
    • A safer tank, Great size and shape, Quiet and simple to install
Style: 2.5 Gallons
After looking at a number of products that make the buyer do the protection from hot spots in the take (by adding a pressure valve that needs a drain, This product seems to take care and heat more evenly and without creating local steam from a too hot too small a heating element. Turning on for the first time I listened very close for the characteristic hiss or Pop from over aggressive heating elements - NONE Totally quiet! and the Heat time was very reasonable even quick - Temperature control very smooth with plenty of range. Size was great - having it built to SIT on the counter floor rather then requiring hang on the wall a real plus. One hit - The tank list NPT 1/2" fitting. Typical USA this is called a "compression Fit" and is NOT a FIP. And Most sinks and faucet connections are smaller, 3/8" . After a bit of fussing I found a 1/2 to 3/8 compression adapter (home depot etc) that fixed that - but I did have a challenge from the tank needing to be farther then the 30" lines available in hardware store - Found a great 4-foot with 3/8 compression on both ends from Amazon - which fit the bill perfect. only took 15-20 min to install once all the parts were found. ... show more
Reviewed in the United States on March 9, 2019 by Kindle Customer
    • Good while it lasted
Style: 3500W
My first one of these lased for only 14 months. It worked great until it didn't work at all. If you buy one get the extended warranty.
Reviewed in the United States on February 7, 2025 by George S
    • Finally, Warm faucet water in winter!
Style: 2.5 Gallons
After suffering through winter after winter of cold faucet water in our patient bathroom, and after plumber after plumber said there was nothing which could be done other than wrapping pipes with plug-in pipe warmers (which did not work), I conducted my own research and came across stand alone water heaters. I read through reviews of many such products and saw complaints about rusting and product failure. I kept researching until I came across this product and felt confident in purchasing it. My contractor installed it after needing to install a water-resistant outlet in the bathroom and after drilling into the drain pipe and connecting the hoses. Since our patient bathroom sink has to be accessible to wheelchair patients, there is no cabinet underneath the sink. I wish this water heater tank was able to be attached to the wall but the directions say not to attach. So my contractor built a small platform for the tank to rest on so that the tank does not get contaminated when the bathroom floor is mopped. Normally by the time a person is done washing their hands, the faucet water is still ice cold. But now within a few seconds of the faucet turning on, they get warm water to wash their hands for as long as they need to wash them! I am so happy I purchased this product! ... show more
Reviewed in the United States on December 16, 2020 by big Ry
    • Use 2 of these in different ways, excellent results!
Style: 4.0 Gallons
I purchased one of these for my Florida office and it works extremely well to deliver instant hot water for hand washing, etc. I purchased another one as a pre-heater for an addition on home with long lines to the primary hot water tank. This works superbly! Instant hot water for hand washing, instant hot water for shower until the main hot water tank takes over. For the shower, the cold inlet comes from the main heater tank and the outlet feeds the shower and wash basin. Works very well, saves time and water because you needn't let the faucet run and wait for hot water to come from main tank. Love the results! Excellent product and excellent results! ... show more
Reviewed in the United States on May 6, 2024 by Charles Devers

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