Hubbard HF90-s or AQU-7FC - Hubbard Water Filter System

The HF90-s (AQU-7FC) is the largest and highest-specified filter in this Hubbard range, priced above both the HF20-s and HF60-s models here. It's built for the same core job as the rest of the range - protecting downstream equipment like ice machines from scale and sediment - but sized for higher throughput applications. Choosing the right size within this range matters for filter life and consistent water quality, so it's worth matching this to equipment with genuinely higher water demand rather than defaulting to the largest option available.