Both the Pelican and Aquasana whole-house filter systems use a four stage filter to create reliably pure water for every faucet and appliance. Like almost all in-line filters, they begin with a pre-screen to capture larger particles and sediments that could damage the rest of the filter. Here, the Aquasana has a clear advantage, being able to remove particles down to 1 micron in sizes, versus 5 microns for the Pelican.
Sticking with the Aquasana, stage two consists of a carbon block filtering, which is made with a highly dense construction able to reduce levels of out lead, cysts, PFOA/PFOS, chlorine, and other organic contaminants. Despite the fact that two of the Pelican’s stages are also carbon-based filters, it can’t match the OptimH2O is this area, instead focusing on organic chemicals only.
The final filtering stages in the Aquasana whole house filter are a water conditioner and a UV filter, which help to ensure that water is soft and bacteria-free. While the Pelican also includes an antimicrobial copper and zinc KDF layer, it again falls behind the Aquasana in terms of filtering technology.