Ariston 2.5 gal. 6-Year 1500W 120 Volt Point-of-Use Mini Electric Water Heater-GL2.5S - The Home Depot


Model # GL2.5S

Internet # 100051412

Store SKU # 479063

2.5 gal. 6-Year 1500W 120 Volt Point-of-Use Mini Electric Water Heater

Ariston 2.5 gal. 6-Year 1500W 120 Volt Point-of-Use Mini Electric Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$184.39 / each
  • Mounts on wall or the floor
  • Easy installation
  • Same-day installation in most areas. Call 855-650-2786 by noon.


Model # GL2.5S

Internet # 100051412

Store SKU # 479063

Store SO SKU # 1000895689

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+ gal. These heaters are aesthetic on the outside, glass-lined on the inside, and offer superior insulation for higher efficiency.

  • Installs independently or in-line with large hot water source - eliminating long waits for hot water
  • Saves water ("point-of-use" means no waiting for hot water)
  • 6 year warranty on tank
  • Non-corrosive
  • Ideal per station for Beauty Solons
  • Ideal for boats
  • Ideal in outdoor kit/bar
  • Ideal in coastal markets

Info & Guides

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Assembled Depth (in.)  10.75 in  Assembled Height (in.)  13.75 in 
Assembled Width (in.)  13.75 in  Product Depth (in.)  10.75 
Product Height (in.)  13.75  Product Width (in.)  13.75 
Tank Valve Size (in.)  0.0  Water Connection Size (in.)  1/2" 
Application Type  Point of Use  Finish Family  White 
Fuel Type  Electric  Indoor/Outdoor  Indoor/Outdoor 
Maximum Temperature (F)  145  Minimum Temperature (F)  65 °F 
Product Weight (lb.)  15.5 lb  Returnable  90-Day 
Tank Capacity (gallons)  2.5  Water Connection Location  Top 
Water Heater Features  Overheat Protection,Temperature Pressure Relief Valve  Water Heater Profile  Compact 
Wattage (watts)  1500 
Warranty / Certifications
Certifications and Listings  1-UL Listed,CSA Listed  ENERGY STAR Certified  No 
Labor Warranty  No Warranty  Part Warranty  2 Year 


Rated 4.4 out of 5 by 175 reviewers.
Rated 5.0 out of 5.0 by Completely satisfied This was a Christmas present to my wife, who was having to wait many long minutes for warm water to arrive at her bathroom sink, on the opposite end of the house from our on-demand main water heater. This small heater has been the perfect solution. It fits nicely under the sink. Drawing only 1500 watts meant that an existing 120 volt, 15 amp circuit was used for the installation. I was easily able to plumb it in myself, tapping into the cold water supply under the sink, and running the hot-water line from the water heater to both bathroom sinks. (See attached photo.) I plugged the electrical cord into a timer, heating the water only between 6 and 9 AM. The water heats up from a cold start in about 15 minutes. For our morning wash-up, we never use more than the 2.5 gallon capacity, and the remaining water stays warm well into the afternoon. We’ve used it now for a couple of weeks, and couldn’t be happier. Although I don’t expect it, just in case a leak should develop, I placed the heater in a pan and built a small, electronic water alarm that will alert me to any problem. February 4, 2014
Rated 5.0 out of 5.0 by This is the easy, cheapest solution to get instant hot water. There are many Rube Goldberg-ish designs to get instant hot water in rooms far from the main hot water heater, but they all have drawbacks–either high cost, complexity, or technical issues. This small, 2 1/2 gallon tank fits under a counter, is easily connected and uses house power–no electrician needed. Any average user can do the installation in 20 mins or less. I'm a graduate engineer and have evaluated other attempted solutions to this problem, and this is far away the cheapest, and safest answer. I love it! December 10, 2013
Rated 5.0 out of 5.0 by Ariston mini water heater completes garage overhaul My detached garage upgrade project is now complete thanks to the Ariston water heater. I had a water spigot outside the garage and a few years ago I tied into that line and made a sink in the garage. The sink was great for cleaning fish but the cold water was miserable in the winter. For many years I debated between a tankless electric heater or a small tank heater. I also debated on voltage, maintenance issues and size. For ease of installation and electrical requirements, I chose the Ariston. I'm glad I did. Now I can cleanup with soap and hot water after cleaning fish, processing deer, painting, changing my oil, making jerky and working in garden. I know every part of this product works great because I had high water pressure issues and the relief valve opened exactly at 150 psi. After replacing my reducer valve it works great. The relief valve can easily be tied into a standard sink drain using some garden hose, brass fitting and a drain pipe with a dishwasher drain attachment. I got a $3 kitty litter pan to sit it in. I highly recommend this product. January 14, 2015
Rated 5.0 out of 5.0 by Great product! This heater was very easy to install in the guest bathroom located on the other side of the house from the main water heater. I put it into a 6" high clear plastic storage container to catch any possible leaks in the future. With the temp setting on warm, we can quickly and comfortably wash our hands. December 31, 2013
Rated 3.0 out of 5.0 by Leaking Tank and poor design This was a install done by a plumbing company and they installed this heater. It is not a bad heater but it's been 6 years now since the work was originally done and I'm just now installing my 3 replacement heater same model each time but always the same problem after 2 or 3 years LEAKING from the tank. I wish they made a drain on the bottom of the tank so when you change the element and rod 2 to 3 times a year it is faster and neater. February 24, 2013
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