Home Master HMF3SdgFeC 3-Stage Whole House Well Water Filter (multi-gradient sediment, iron, carbon; 20 x 4.5 in, 1 in ports)

Made by Perfect Water Technologies (Phoenix, AZ), sold on its own store ThePerfectWater.com. The maker sites (theperfectwater.com, homemasterfilters.com) now return a Cloudflare challenge to plain HTTP, so price, specs and policies come from Wayback Machine captures of the maker's own pages (product page captured 2026-06-20: $550 without gauge; $586.95 / $609.95 / $629.95 with 1 / 2 / 3 pressure gauges). Home Depot and Lowe's pages were blocked, so no retailer price was verified. Replacement cartridges on the maker store: sediment $35.95, iron $99.95, carbon $99.95 (12% off with Subscribe & Save). Maker says 'For Use with Potable Well Water' and filters iron up to 3 ppm combined load; operating limits: pH above 7.0, iron under 3 ppm, manganese under 1 ppm, no iron bacteria; H2S and manganese are removed but shorten iron cartridge life. Feed pressure is 20-90 psi on the product page but 40-100 psi in the warranty conditions. Not for microbiologically unsafe water. The 2013 manual said 'use a licensed plumber'; the 2021 manual dropped that and the maker's returns page says its products are designed for DIY installation by the average homeowner. No system listing at NSF, IAPMO or WQA; only the sediment cartridge material is NSF-listed as a component. Affiliate: the program page (Feb 2024 capture) offered 15% on systems with a 60-day cookie, joined via a customer account; that page returned 404 in an April 2026 capture, though aw_affiliate tracking links still appear, so the program may be closed (signup unconfirmed). The maker also runs a referral program (50% off a filter change set per referred system). Maker-site reviews (16) are mostly positive; single owners mention expensive replacement filters, residual iron staining and needing extra wall support, but nothing recurring was verifiable (Home Depot, Lowe's and Reddit blocked plain HTTP).