Most under-sink filters only remove chlorine they can't touch hard water. Arius is different. It's a compact under sink water softener and filter combined in one small system, using true ion-exchange resin technology alongside multi-stage filtration to tackle both impurities and hard water minerals at the source.

As a portable water softener, Arius installs directly beneath your sink in about 30 minutes no plumber, no drilling, and no permanent changes to your plumbing. That makes it a genuinely renter friendly water softener, ideal for apartments, rentals, and anyone who can't modify fixed plumbing.

Despite its small footprint (about 18x12x4.5 inches and 19 lbs), this small water softener delivers whole-house-level performance in a fraction of the space and cost of a traditional system. The filter cartridge reduces chlorine, heavy metals, and disinfection byproducts, while the softener cartridge removes calcium and magnesium the minerals responsible for dry skin, dull hair, and mineral buildup.

Maintenance is simple: swap the filter every 3 months, and recharge the softener with salt roughly every two weeks. Backed by a 60-day money-back guarantee, Arius proves that a compact water softener doesn't mean compromising on real results.