Put them side by side
A score is a summary. This is the whole spec sheet.
Pick the systems you are torn between. We line up their price, capacity, flow rate and warranty in one table. You can see where one wins and where it does not.
Pick up to four. You can swap one out at any time.
Pick a system to start. Try one from our top picks if you are not sure where to begin.
Here is how to read this table
Where a system carries an overall score, it is the average of three checks: price, grain capacity, and warranty. Each counts the same. A system with no score here is missing one of those three numbers, so we show every real spec instead of a guess. We show customer reviews of that exact model too, where we found enough of them, but reviews do not count toward the score.
A high score is not always your answer. If your water is hard and your house is full, capacity matters more to you than the average. Read the row that matches your problem.
Not sure which row matters? Check your ZIP code and we will tell you which number to weigh most.
Check the water in your ZIP codeCheck Price links may pay us a cut when you buy. Your price stays the same, and no maker can pay for a better score.
Every figure in this table comes from the maker's own product page, customer reviews of that exact model from the source we cite by name, or our own scoring math built from those numbers. Where a number is not published, the cell says so instead of guessing.