Aigerri Review: The Waste Ratio Checks Out, the Warranty Does Not

Openly: affiliate links sit here and we earn if you use one. We have scored this a six, and the reason is a blank space on the brand's own product page.

Reverse osmosis has always carried an uncomfortable secret. To make one glass of clean water, most systems throw several straight down the drain.

Aigerri claims to have largely fixed that, and unusually for a marketing claim this one survives contact with a calculator. So this Aigerri review splits cleanly into two halves. One where the engineering genuinely impresses. One where a missing document costs it dearly.

The Machine on Paper

Read the top row and the bottom row together. Three hundred and eighty dollars, and no published warranty term when we checked.

Five stages. Sediment and carbon pre filtration, the reverse osmosis membrane itself, ultraviolet sterilisation and a final taste stage, feeding two separate tanks that hold five litres of raw water going in and two litres of purified water coming out the other side.

Nothing is drilled and nothing is plumbed, so you fill the raw tank from the tap, let the unit get on with it, and leave the whole thing sitting on a worktop beside the kettle, which is the entire reason countertop reverse osmosis exists as a category in the first place and why renters keep asking about it.

The Water Maths, Checked

This is the claim worth testing. The whole product is sold on it.

Seventy per cent less water in, per gallon of drinking water out. The brand says eighty, which is generous but not fantasy.

A five to one pure to drain ratio means that for every six parts of water entering the system, five come out drinkable and one goes down the drain, which puts the waste share at 16.7%. Six in, five out. That is the claim.

Compare that with a conventional under sink system running at one to three, where three gallons disappear down the drain for every single gallon you actually drink, putting the waste share at 75%. Per gallon of drinking water the older design pulls four gallons from the tap. Aigerri pulls 1.2.

That works out at a 70% reduction in the water drawn from your tap, rising to 76% if you compare against a one to four system instead. Aigerri markets the figure as eighty per cent less water, which sits at the optimistic end of that range rather than outside it altogether. Generous. Not false.

What the Tank Size Really Means

Two litres sounds small until you convert it.

Eight and a half cups in the purified tank, filled in under five minutes. For one or two people that is a day's drinking water.

The 2L purified tank holds about 8.45 cups, and at a stated 1.8 cups a minute it refills in roughly 4.7 minutes. That is quicker than most countertop reverse osmosis units manage and fast enough that you are rarely stood there waiting on it.

The five litre raw tank is the part that quietly shapes daily life with the thing, because you refill it by hand at the sink, which makes this a jug that purifies rather than a tap that runs. One person will barely notice. A family of four will be topping it up more than once a day, every day.

The Blank Space on the Page

Now the part that keeps the score at six.

At the time of writing, the warranty line on Aigerri's own product page read that terms were still to be confirmed before launch. Not five years. Not two. Not a term at all.

1. No published warranty length
2. No star rating displayed on the product page
3. No visible review count from buyers
4. Filters quoted at six to twelve months, a wide range

None of that makes the hardware bad, and we have no reason at all to think it is. It does mean you would be handing over $380 for an appliance from a brand carrying no published service commitment of any kind whatsoever, and on a product built around a pump, a membrane and an ultraviolet lamp, all three of which are things that fail, that is a real gap rather than a paperwork quibble.

The six to twelve month filter window is a smaller version of exactly the same issue. The difference between replacing a set annually and replacing it twice a year doubles your running cost, and nobody has quantified that for you anywhere on the page.

Who Should Buy One

Buy it if you rent and cannot drill into anything. Buy it too if the water waste of conventional reverse osmosis has been the specific thing holding you back all along, because on that brief the Aigerri water filter does exactly what it claims and the arithmetic backs the claim rather than quietly undermining it.

Wait if you want a written warranty in front of you before spending $380 on something containing moving parts. Wait too if you would rather buy into a brand with a few years of service history behind it and a visible complaint pool you can actually sit and read through before committing.

Buy Now

Final Verdict

The engineering claim holds up, which is not something we can often write. A five to one ratio genuinely cuts water drawn by around 70% against a conventional system, the tank refills in under five minutes, and nothing needs drilling. What costs it four points is everything a buyer cannot see. No published warranty term, no displayed rating, no visible review pool and a filter interval quoted across a twelve month spread. Anyone reading an Aigerri review should check whether that warranty line has been filled in since, because on current evidence it is the only thing standing between a six and an eight.

FAQs

How much does the Aigerri cost?

$380 for the countertop unit, which includes two replacement filters.

How much water does it waste?

About 16.7% at a five to one ratio, against roughly 75% for a conventional one to three system.

Does it need installation?

No. No drilling, no plumbing and no tools. You fill the raw tank from the tap.

How long does it take to fill?

Roughly 4.7 minutes for the 2L purified tank, at a stated 1.8 cups a minute.

What warranty comes with it?

None published at the time of writing. The product page listed terms as still to be confirmed.

How often do filters need changing?

Every six to twelve months, with the unit alerting you. That range is wide enough to affect running costs.

Pricing, specifications and published claims were accurate at the time of writing and change often, particularly on a recently launched product. Water ratio comparisons are calculated from the manufacturer's stated five to one figure against commonly quoted conventional ratios rather than measured by us. Confirm the current warranty terms before ordering.