Multipure has upgraded the Whole House System filter replacement cartridges for our older TO15000 and TO30000 Whole House Systems. Although the TO15000 and TO30000 originally used the TO20 filter cartridge, they will now be using the newer CB20 cartridge – the same replacement filter used by the Aquasource Whole House System.

The primary benefit to this upgrade is that the CB20 cartridge has a filter capacity of 30,000 gallons – twice the capacity of the TO20 – and thus should not need to be replaced as often. And while the retail price of the CB20 is $120, it is actually more economical than the TO20 due to its increased capacity; the CB20 provides 250 gallons of filtration per dollar, while the TO20 provided only 200 gallons of filtration per dollar.