SimPure Q3-600 Tankless Reverse Osmosis System, Under Sink Water Filter System 600 GPD, 7 Stage Electric RO Water Filtration, Reduce 95% TDS, 2:1 Pure to Drain, USA Tech, NSF/ANSI 58 Certified, FCC

Excellent RO system, no need to wait for tanks to fill up, just turn it on and get as much filtered water as you need at a time. Note that there are two filters in this system, one needs replacing every 6 months and the other every year.The water tastes good to me personally, though other family members have noted that it tastes a little off, but I think that's because it contains no minerals, it's just pure water. As with all RO water, you might want to add minerals for drinking purposes.Installation was easy, I had no issues at all with getting it up and running in a short amount of time. You don't need to be a licensed plumber to get it done, but I do recommend that you have some experience doing handy work around the house before taking this on yourself. The unit itself takes up a neat corner within the cabinet under the sink, and is easy to pull out for replacing the filters.

Installation was easy and instructions easy to follow. Included links for video instructions. Works great, completely removed metallic taste from soft water. Flow is a bit on the slower side, but not terrible. Performs quietly, hardly hear it when it's running. Happy with unit.

A short time ago reverse osmosis meant water coming out at a snail's pace, which made it hardly worth the effort. True, the water made it out in virtually pristine condition...but the wait was painful. Now SimPure has made a unit that delivers filtered water in a jiffy. Installation was quite easy and every fitting needed was included. Just be sure to read the whole manual before beginning installation or you may have some serious leaks. There are some little horseshoe clips that MUST be installed on the quick connects, and that fact is not mentioned until some later pages. Read it all first and then do the install. I like that this is a tankless unit and it flows up to 600 gallons per day. I don't drink that much water, but at that rate it doesn't take long to fill a glass. I almost bought a G.E. unit, but after comparing the specs I chose this one. Did I make the right choice? If it holds up I will be happy with it, but I am on day one and can't be sure. So far I am thrilled with the water quality...no chlorine taste at all. The water here in Harlingen Texas is loaded with chlorine. If I encounter any problems I will add an edit.The one thing I like better about the G.E. unit is the faucet: it is classy and professional looking. The SimPure faucet is almost like an after-thought. But the unit can filter 600 gallons a day compared to only 11 gallons for the G.E. unit. Time will tell if I made the right choice.

Like another reviewer mentioned, this unit sometimes comes with a faulty 3 way valve they will leak. Had no way to contact seller, so had to order replacement unit. New valve was great, and the unit primed wonderfully and puts out great water. Takes my already decent water with ~35ppm down to 1ppm.Will be great to not have to buy jugs of water now. Install is pretty easy and they include a couple of adapters that would handle most undersink situations.

**Compact Design:**The SimPure Q3-600 stands out with its compact size, easily fitting under the sink without taking up much space. This design choice is a significant advantage for those who prefer a clutter-free environment.**Performance** With PPT levels consistently between 2-10, the water quality is exceptional. The pressure is robust, allowing me to fill a glass in less than 12 seconds—a testament to its excellent performance.**Installation Simplicity:**The installation process was a breeze, taking roughly **30 minutes** to complete. It was extremely simple, and the straightforward. Instructions were not used and I already had a pre drilled hole in my granite top for the spout.**Custom Setup for Convenience:**I purchased a **3-way 3/8” connector**, a separate tube, and a valve to accommodate filling up **5-gallon bottles** for my water cooler. The entire process for one jug takes approximately **9 minutes and 30 seconds**.**Economic Benefits:**The financial savings have been substantial. Previously, I spent about **$490 per year** on water, not including the fuel costs for transportation. Now, I no longer need to transport heavy jugs for refills, which is both a relief and a cost saver.**Overall Satisfaction:**The SimPure Q3-600 has exceeded my expectations in every aspect. From its **space-saving design** to its **effortless installation** and **economic efficiency**, it's a product that I would highly recommend to anyone looking to enhance their water quality without any fuss.