Eccotemp i12-NG Review

Suppose you are very concerned about the utility bill and looking for a very energy-efficient water heater, then Eccotemp i12-NG Indoor tankless heater is a good choice. Eccotemp i12-NG Indoor tank is natural gas-operated much appreciated for its sleek design. This fully automatic tankless water heater is so easy to install that you may not need any professional help. It is set at 3 GPM, but you can avail a shower as fast as 4.8 showing good value.

Features of Eccotemp i12-NG

Low power consumption

I am a very energy-conscious person. Maybe that is why I liked that It only consumes 2 watts when idle and 1.07 amps during operation, making it an incredibly energy-efficient domestic device.

Efficient for medium home at cold places

Whether you live in Northern Michigan or a colder place like buffalo, this gas-fired tankless heater is ideal for small to medium-sized homes. It can support a shower and a basin simultaneously. At 2.5 GPM, it can run three faucets. So if you are in a rush and have to do multiple works at a time-dish washing, washing machine, and kitchen faucet, it is easily possible. If you allow 1.5 gallons of water to flow into a Jacuzzi tub for 20 minutes, the water will reach 97 degrees. A small tub far from the point the heater can also be served in 10 minutes with 1.5 GPM, with higher GPM and cold water mixing, saving more time. More than the size of the home, it is based on the member of the home deciding the efficiency issue.

Easy installation

Unlike tank heater, Eccotemp NG Indoor tankless heater is very easy to install and light-weighted. It comes with a horizontal stainless steel vent kit, a 120 Volt UL listed power cord used for powering the internal exhaust fan, and the heater’s digital display.


Gone are the days to hang a big tank water heater; they were neither good-looking nor space-saving. This sleek, the designed tankless water heater is precise and has a very modern look. The display is black and gives a feeling of safety. It will save 12.5 cubic feet of your space, which a tank water heater would otherwise lose.

Beautiful design with detail display

Eccotemp i12-NG Indoor tankless heater has a sleek black acrylic glass casing. Once you set the temperature, it controls the temperature automatically. I liked the touch screen, and it shows GPM flow along with the output temperature.

Safe for home with kids

Without any tank, it is already a safe choice for any aged person. The outer shell never warms up, although it can run for hours. And the cherry on top is it has a child lock to keep any chance of scalding away.

Automatic heat control

Eccotemp FVI12 NG model, another model of this company, has the same feature and capacity. Yet the manufacturers went to build this one because it has an added element of Automatic temperature control. This system reduces the problem of a minimum requirement of flow rate to activate the burner.


  • Child lock
  • It looks like a big Ipad
  • Space-saving
  • Energy cost reduced
  • Very easy to operate
  • Hot water range: 0.6 – 4.8 GPM
  • It needs no additional adjustment at is built for a standard household 120-volt electric outlet.

Drawbacks with proper solution

Small vent pipes

The vent pipe supplied with Eccotemp i12-NG Indoor tankless heater is relatively small, around 2 inches in diameter and 18 inches in length. It can give a hard time venting water through the wall to a fairer place, but you cannot use any existing more giant pipe if it’s not stainless steel; it will violate the warranty policy.


If you are hanging it at the outside wall and letting water go through the wall, you can shop for a 2” pipe longer in length and made of stainless steel. It must be a stainless steel pipe, as it has to bear the high heat of 80,000 BTU.

Many extra parts are required.

It does not provide any clean-out valves for maintenance. Some users also felt the need to buy extra exhaust fans.


It is safe to buy extra exhaust fans for good maintenance, although it is not essential; therefore, only one exhaust fan is attached.

It is better to order a 3/4″ valve kit. It will help you so that you can clean the unit every six months with the cleaning kit from Amazon.

No explicit instruction about using child lock


To activate the child lock, you need to hold on to the screen for 10 seconds. Voila, it is activated.

Frequently Ask Questions

Will it work for a 2000 sqft?

It depends on the people who use hot water simultaneously; it can allow three faucets, so yes, maybe if you have 4-5 people at home, you can buy it.

Does it need a plug or hardwire?

These things comes with the heater. A Stainless steel vent kit. 120 volt UL listed power cord. 2.5”-3” Stainless steel adapter. A 2 year of warranty.

What are its height and weight?

Its size is 16 x 16 x 11 inches. Weight 29 pounds


If you live in a cold place with 37 degrees F have a home with 2-5 people, you can shop for Eccotemp i12-NG Indoor tankless heater. It has an automatic heat controlling feature that will maintain a constant heat irrespective of fluctuating water flow. It will reduce your power consumption by 30-50%. So if you are energy conscious and looking for an efficient, cost-saving powerful tankless gas water heater, this one is to go for.

Leave a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.