SioGreen IR288 POU Infrared Electric Hot Tankless Water Heater Review

The SioGreen IR288 is a mid-priced electric tankless water heater that’s well worth its cost. It is arguably one of the most innovatively designed heaters in its class. In fact, its primary selling point is the super thoughtful functionality and five-star performance. We dissect through this unit to find out what exactly makes it tick.

Notable Features and Highlights

Zero Internal Components Corrosion

One of the most common problems with tankless heaters is corrosion of elements caused by the water that passes through the system. This problem, however, shouldn’t be a cause for concern with the SioGreen IR288. Unlike most models that use elements to heat water this one comes with a quartz infrared tube that generates heat without coming into direct contact with metal. In other words, the environment inside the tank doesn’t allow corrosion to happen.

No Limescale Deposits

Another gripe with tankless water heaters is the accumulation of minerals and deposits especially if you live in areas with hard water problems. By extension, this allows bacteria and algae to thrive, further downgrading the quality (and safety) of your water. The case is different with this heater though. It doesn’t allow water sitting so it suppresses the development of algae, bacteria, and other harmful micro-organisms.

Zero Maintenance

We can’t overemphasize the need to regularly maintain your water heater. In fact, we wrote an entire piece on keeping a tankless water heater efficient if you want to make the most out of your model. Even then, the SioGreen IR288 isn’t that hard to maintain. The fact that it doesn’t use a heating element means that you don’t have to flush it routinely to keep performance at its optimum. Now, that’s a heater that seeks to save you both money and time.

Far-Infrared Technology

Going back to the quartz tube, this water heater uses combine carbon coating and heating element technology to amplify the level of energy inside the tube. What this means is that as long as you’ve turned your heater on, it will continue to use the same amount of energy, even when the flow rate increases. Of course, this translates to lower utility bills.

Automatic and Manual Power

The best electric tankless water heater should have a design that allows you to control it effortlessly. Well, the IR288 offers more than that. It features both manual and automatic control modes. In automatic mode, it uses the brand-exclusive smart modulating technology and formula to estimate the variation between the temperature you desire and the current temperature. It then predicts how much power is enough to heat the water as per your needs and adjusts automatically.

In manual mode, it allows you to hold the power button for about three seconds so you can adjust the current from 5 to 40 amps based on your needs.

Dual Mode Temperature Control

The SioGreen IR288 can adjust the heating temperature automatically or let you do it manually. In automatic mode, all you need to do is to press the temp button up and down and the integrated software takes care of the rest. In manual mode, you’ll increase the temperature from levels 1 to 8 by simply turning the water flow regulator clockwise.

Why is this important? Well, the last thing that you want in your household is a heater that doesn’t meet your hot water needs. Most importantly, you’re better off with a model that allows you to dictate how hot or warm your water should be – and that what the IR288 gives you. And the beauty of it is that it has large LCD screen that enables you to view the temp at which your water is heating.

Quick, Smooth Installation

The SioGreen POU installs in a snap. For starters, it features a space-saving design that’s just a little bit bigger than a shoebox. That way, you can fit it below the tiniest of cabinets in your kitchen, bathroom or utility room. In fact, it is the ease of installation combined with the small size that makes it a great pick for small apartments.


  • Reasonable temperature rise
  • Minimum 1.0 flow rate for 55 to 60 degrees Fahrenheit rise
  • Compact build
  • Excellent performance – can handle two showerheads at the same time
  • Reasonably priced


  • The flow rate could improve


The SioGreen IR288 is a brilliant tankless water heater if you’re scouting for a model that can handle a wide range of business and industrial applications without leaving a hole in your wallet. Those who’ve used say it gets the job done and is a reliable unit you can count on every time you need hot water. Over to you!

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