Had this for over 2 years. Was about $360 back in 2021, but I see it's over $400 now.

CONS:
1. water capacity of this is very small. It doesn't even provide a gallon of water. Not a huge con for me, as I knew that when I bought it, but you'll be filling the reserve tank probably 2-3 times per day.

2. Purified water tank is not sealed and can easily be opened and contaminated by someone. I find this flaw the most inexcusable. The tank that holds the purified water needs to be completely sealed off and inaccessible.

3. Requires electricity

Pros:
No drilling required and no wasting valuable space below my sink, as is the case with most RO systems. I have a traditional RO unit as well, along with a 5 gallon storage tank. In truth, conventional RO units are far, far superior to this one, but they take up far too much space under the sink.

My family really likes the taste of the water. We have really hard water where we live and the TDS out of the tap is around 750-770. The water that comes out of this unit is
2 month update

The machine still works like day 1. The water tastes great and the cost per month is really great. We would have spent about $60 (2 filters per month) with the ZeroWater filters for the last couple of months as we drink a lot of water. This system brings out cost for filters and descaling powder to i about $12 month for a family of 4.

6 month update

We had to change the first filter, the one labeled "1-2" today because that filter light lit up and stayed lit. It was very easy and consisted of slide the side of the unit up and off as this is were the filters are located. I unscrewed the filter and after unpacked the new filter, screwed it in the now empty filter location. I then slid the filter cover back on and pressed the filter reset switch located in the back of the unit. The filter numbers which had lit up and stayed on letting my know which filter needed replaced was now off. The water filter was now ready to use.

I cannot believe I messed around with under-the-sink RO systems (the one I had exploded flooding my condo and the family before me) and filter and pitcher setups which are so expensive in the long run and only one worked well named ZeroWater or something like that. This unit costs pennies to operate and provided one great tasting glass of water after the next. I will do my next update at 1 year. Thanks

I like this purifier because it is easy to maintain and I don't have to buy bottled water. Filters last a long time for me. This is my second purifier. I like the quality of the new one. They have improved over the years. Love and Gratitude.

I read a blog that recommended this product. I trusted what they said and I'm glad I did. Based on the Amazon reviews I'm not sure I would've purchased it! The water tastes GREAT, which was my biggest concern. I've been drinking Crystal Geyser because the water tastes clean with no aftertaste. I warned my daughter after buying this product that we might have to get used to a slight "flavor" to our water but that we were just going to have to deal with it. I was done buying 4 gallons a week of Crystal Geyser jugs that I was continuously breaking down and walking to our complex's recycle dumpster. I WILL NOT drink tap water and twice in 2 months I had to drive to our nearby convenient store at 11pm at night upon realizing we didn't have enough water for the evening and to refill my daughters hydro flask for school. The reason I went with this product instead of a water delivery company is because I wanted something sleek that didn't take up a lot of space. I definitely didn't want a huge water jug atop a large stand. You do have to "make" water quite often since it is a smaller unit but it's a small sacrifice for the counter top design.

Day 1 - 10/9/2017
We received our AquaTru Countertop Reverse Osmosis system today. We've been using a Zen Water System for several years, and liked the system, but wanted a system with reverse osmosis. We set it up and ran through the required 5 tanks to flush the filters before we started tasting/testing.
It's Awesome! Quiet, fast (about 12+/- minutes for 3 quarts). Tastes great! The filtered water tank is a quite a bit smaller than our old Zen system which had a 5 gallon filtered water tank, but I think the speed of the AquaTru will make up for the smaller tank (The Zen was significantly slower). The Zen system was also more difficult to maintain, wash the components, tanks, etc. The smaller tanks on the AquaTru will be much easier to maintain.
We have a TDS (Total Dissolved Solids) tester which measures dissolved solids in PPM (Parts per million). Our unfiltered tap water is about 230 to 270 PPM dissolved solids. The filtered water from the AquaTru is about 33 PPM. I also tested the waste water which contains the removed containments and dissolved solids removed from your water. It tested at over 530 PPM.
Will update this review sometime in the future based on our experience over time.

Day 2 - 10/10/2017
A couple more observations:
Great Feature: The filtered water tank has a full sensor, so when the tank is full, filtering stops. As filtered water is dispensed from the tank, the unit will automatically begin filtering more water until the filtered water tank is full, or the tap water tank has been depleted. As long as there's enough water in the tap water tank, the unit will keep the filtered water tank full. When the Tap water tank needs to be emptied of waste water and refilled, there's a large indicator on the front display.
Room for Improvement: The filtered water tank dispenses from the bottom front by pushing a button, which releases water. The button is a bit difficult to get good control over the rate of flow. If you're filling a container or glass it's a great, strong flow. If you're filling an ice cube tray or similar shallow container, it's a little more difficult to control the flow so it doesn't splash everywhere, but not impossible. Also, the water continues to flow for about a second after you release the button. Just something to know so you don't overflow...
Still really impressed and the water tastes great!

UPDATED: Month 6 - 4/14/2018
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We've been using the AquaTru for a little over six months now. Still works and tastes great! We ordered a spare set of filters but haven't had to replace any yet. On a typical day we'll run anywhere from 1 to 4 tanks through the filter. We also bought a second clean water tank and keep it in the refrigerator. There are occasional periods with more (house guests, etc) and periods with no tanks run thru (trips away from home, etc).

We have found one (probably rare) problem that we are concerned will shorten the life of the pump, etc. We live in a 70+ year old house. The Aqua Tru is on a kitchen counter top. Occasionally the water in the tank may slosh slightly if there's a slight earthquake (we live in Southern California) or a truck goes by, etc. (Due to our older home). If the tank is full, this causes the filtered water sensor to think that the tank is no longer full. The pump turns on, and almost immediately as the water sloshes back and touches the sensor, the pump turns off, usually less than 1 second later. This causes the water to slosh even more, and at times becomes self perpetuating. The pump continues to turn on and off very rapidly. Occasionally we'll hear the unit doing this during the middle of the night, and have to getup to remove enough water so that the sensor no longer triggers.

If the AquaTru waited a few seconds before engaging the pump or detected this rapid on/off of the tank full sensor, it would probably eliminate these false triggers.

Because of this issue, i'm lowering my rating to 4 stars. It's an unusual situation that probably won't affect everyone, but one that could be avoided with a simple engineering or software change.

UPDATED DAY 398 - 11/11/2018
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We still use the AquaTru daily with only one issue not mentioned above. We are concerned, that in all this time, the unit has never instructed us to change any of the filters! The various filters are expected to last six months, one year and two years. By my rough estimate, we've processed more than the estimated gallons through. In the box, there was a single sheet that directed us to press the reset button on the back of the unit for a period of time. We did do this. I'm assuming it was to reset the counters used for each filter. I'm ordering all new filters to install and resetting the unit. And will monitor more closely this time on the six month filter.

UPDATED DAY 1,451 - 09/30/2021
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The original unit we purchased in 2017 is still in use on a daily basis, often several tanks a day! I gave up on the filter reminders. I just replace them based on the calendar. Replace the pre-filter and carbon filter every six months, and the Reverse Osmosis every 12 months.

Yesterday, I used the AquaTru descaling kit - I recently noticed it was available on the AquaTru site. Had a minor issue because I was following the directions too closely. It tells you to remove the filter cover, remove your regular filters, and insert the filters for descaling. The directions say to start running the descaling fluid through the AquaTru. They didn't say to put the filter cover back on. The unit won't run without the filter cover on! Spent an hour trying to figure that out.

During the descaling process, the unit stopped filtering once or twice with each run-through, which was expected. Once the descaling was done, you run clear water through at least twice. That's when I started having an issue with the unit not starting. I let it sit overnight and it started running fine. After the flushes were done, I washed the tanks, put new filters in, added water, and once again it won't start. When I turn on the power, there's a faint click, then nothing. Re-seated everything, to the same result. Going to let it sit for a few hours, hopefully, that will get it running again. Update to follow...

UPDATED DAY 1,452 - 10/01/2021
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Issue resolved! We have two clean water dispensers so we can keep one in the fridge. When I was washing them, I got water into the handle, where the sensor is to see if dispenser is full. The other dispenser works fine. Just need to drain the water from the handle and let it dry out inside.

UPDATED DAY 1,737 - 7/13/2022
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It's been four years, nine months, and four days since we started using our AquaTru! It's still running strong, although it's slightly showing its age.

It's a little less forgiving when we place the clean water and tap water tanks on the unit as it occasionally leaks water on the counter and floor. Not a ton, but enough to have to wipe up. One of the clean water tanks can leak a bit when it is not sitting on the base.

After replacing filters or descaling the base, the pump doesn't always re-engage immediately. The last time we changed a filter, it had to sit overnight before the pump would engage again, so we could run a few tanks of water through and start using it again.

Since it is an integral part of our daily routine, using a couple of tanks of water daily, we have been concerned that the unit may finally go out (it's still working today).

We saw the same AquaTru unit for a great price in the Prime Days sale, so we ordered a new AquaTru unit yesterday. Probably the best endorsement I can give "“ we repurchased the same model!

When we receive the new AquaTru unit, we'll probably move our old one to an office area and continue to use it as long as it operates. I'll add an update to this review once we have the new unit, and it's been working for a bit.