About Whole House Filters

US prices checked on November 9, 2026

Why this site exists

Buying a whole house system is a strange purchase. It costs as much as a fridge, it lives in a garage or a basement for ten years, and almost nobody can tell you which one they own. The brands all publish their figures differently: one gives a peak flow, another a service flow, one counts a cartridge set in months, another in gallons, and the yearly cost of filters is often two clicks away from the product page. We put everything in the same format, for the same house size, and we tell you where each number comes from.

What we cover

• 16 systems from 7 brands (Aquasana, Fleck, iSpring, SoftPro, SpringWell, US Water Systems, Waterdrop), 16 of them scored: city water filters, well water filters, salt-based softeners and salt-free conditioners.
• 4 rankings, 8 head-to-heads and 6 guides on costs, sizing and well water.
• A water softener size calculator and a comparison tool.
• We leave reverse osmosis drinking water systems aside on purpose: they treat one tap, not the house.

How we work

Specs come from the brands' official product pages, manuals and performance data sheets; prices come from the official US stores, with the date we read them. Scores are calculated with a formula we publish in full.

Reviews and guides are written and signed by the editorial team / Megan Brooks. Corrections are welcome and quick: send the official page that settles it to contact@whole-house-filters.com.

How the site is funded

Some links are affiliate links: we may earn a commission at no extra cost to you. It never changes our scores. No brand pays for a place in a ranking. Details in the affiliate disclosure.

Publisher

Whole House Filters is published by Mint Technology LLC, 4405 Jager Dr NE, Ste C4-4375, Rio Rancho, NM 87144, USA. Legal details are in the legal notice. Product images belong to their manufacturers.