Tony - New Jersey (Friday, January 10, 2014)
Was replacing my electric hot water heater every two years before I installed this filter system. Now have same hot water heater for over 14 years!
This filter is the same as the AP110 which is half the size. You can either use two AP110's or one of these AP110-2.
Either way, Aqua-Pure makes excellent filters and filtersfast.com has the best prices and service.