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Why do I say just 8 cents per gallon for drinking water?
Let's take $56.95, the price of our most popular CB6 or CB6AD replacement filters (for MPAD or MP750 systems). We'll divide that $56.95 by the 750 gallons the filter is rated for. We get 7.6 cents per gallon. Round that up to 8. That's where the 8 cents comes from. Let's compare Multi-Pure's replacement filter cost, per gallon, to that of some competitors. We'll choose only filters certified by NSF not only for chlorine, taste and odor, but for significant contaminant reduction.
More information comparing the performance tests of these filters How about the cost of the filter housing? How do we take that into account? That of course is going to vary by the system. In some cases you have to buy a whole refrigerator! Let's take the Multi-Pure's countertop MPAD. This model is easy to install, and is in fact portable--if you move, take it with you! This installation will cost $224.95 at list price. Now, this unit 's housing has a lifetime guarantee, provided the filter is changed yearly. Let's conservatively say its life is 20 years. Over 20 years, that's just $11.25 per year, or $11.25 per 750 gallons. That adds 1.5 cents per gallon. How about our popular undersink stainless-steel model 750SB? Its list price is $399.95, plus maybe $100 for a handyman to install it. We can spread that $500 cost out over the life of the installation. Again we have a lifetime warranty for the housing, provided the filter is changed yearly. Let's say the installation will last 20 years. $500 divided by 20 years is $25 per year, or $25 per every 750 gallons. That adds 3.3 cents per gallon. You can see that the Multi-Pure systems don't add much to the cost, owing to long life. Competing systems add something too, and generally have a shorter life.
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