Head-to-head · updated November 9, 2026
iSpring WGB32B vs Aquasana Rhino
Short answer: buy the iSpring WGB32B if your budget is close to $500 and you are fine changing three cartridges once or twice a year. Buy the Aquasana Rhino if you want the system to run for 10 years with only small pre- and post-filter swaps, and a 10-year warranty instead of 1.
iSpring WGB32B 3-Stage Whole House Filter
8.3Good · out of 10- 5-micron sediment stage then two coconut-shell CTO carbon blocks
- Up to 99% chlorine plus herbicides and industrial solvents, per iSpring
- Up to 15 GPM; 100,000 gallons or 12 months per set
Better on 3 of 8 comparable lines · $516.99 on November 9, 2026
Aquasana Rhino Whole House Water Filter
8.7Very good · out of 10- Dual-tank upflow design rated for 1,000,000 gallons or 10 years
- Independently tested to NSF/ANSI 42 for up to 97% chlorine reduction
- Peak flow of 14.6 GPM; contaminant claims are measured at a 7 GPM rated flow
Better on 5 of 8 comparable lines · $1,998 on November 9, 2026
Some links are affiliate links: we may earn a commission at no extra cost to you. It never changes our scores.
Spec by spec
| Criterion | iSpring WGB32B | Aquasana Rhino |
|---|---|---|
| Calculated score | 8.3/10 | 8.7/10 |
| Checked price | $516.99 | $1,998 |
| Flow rate | 15 GPM peak | 14.6 GPM peak |
| Media life | 6 months | 10 years or 1,000,000 gal |
| Yearly upkeep | $251.98 a year | $147.96 a year |
| Contaminants claimed | Chlorine, Sediment, Organic chemicals (pesticides, VOCs) | Chlorine, Sediment |
| Certification | Independent lab test | Independent lab test |
| Drain and power | Neither needed | Neither needed |
| Connection | 1" NPT | Not stated |
| Warranty | 1 year | 10 years |
| Return window | 30 days | 90 days |
★ marks the better figure on that line (8 lines can be compared). Specs as published by the brands; prices checked on November 9, 2026.
What the numbers mean
The iSpring costs $1,481 less up front, but it costs more to keep: about $252 a year at iSpring's 6-month interval, against about $148 for the Rhino. If you stretch the iSpring set to 12 months, which iSpring allows for light use, you drop to about $126 and the iSpring stays ahead on cost for well over a decade.
iSpring names herbicides and industrial solvents alongside chlorine; Aquasana names chlorine and sediment. On proof, Aquasana is more specific: NSF/ANSI 42 named, against "NSF/ANSI standards" without the standard for iSpring.
Our pick for each kind of buyer
iSpring WGB32B
The iSpring WGB32B costs $1,481 less than the Aquasana Rhino up front, at prices checked on November 9, 2026.
Read the review →Aquasana Rhino
The Aquasana Rhino scores 8.7/10 against 8.3/10 with our published formula.
Read the review →Aquasana Rhino
Replacement parts for the Aquasana Rhino cost about $147.96 a year, against $251.98 for the iSpring WGB32B, at each brand's shortest stated interval.
Read the review →iSpring WGB32B
iSpring claims 3 contaminant groups for the iSpring WGB32B (chlorine, sediment and organic chemicals (pesticides, VOCs)), against 2 for the Aquasana Rhino.
Read the review →Aquasana Rhino
Warranty on the Aquasana Rhino: 10 years; on the iSpring WGB32B: 1 year (head or valve, where there is one).
Read the review →Questions
Which is better, the iSpring WGB32B or the Aquasana Rhino?
With our published formula, the Aquasana Rhino scores higher (8.7 vs 8.3/10). The right pick still depends on your water and your house: see the picks by profile on this page.
What is the price difference between the iSpring WGB32B and the Aquasana Rhino?
On November 9, 2026, the iSpring WGB32B was $516.99 at iSpring (3-stage big blue 20" x 4.5") and the Aquasana Rhino $1,998 at Aquasana (base system, no add-ons). Installation is extra in both cases unless you do it yourself.
Which lasts longer, iSpring or Aquasana?
The Aquasana Rhino tank is rated for 10 years or 1,000,000 gallons. The iSpring WGB32B cartridges last up to 12 months or 100,000 gallons, and the housing has no stated end of life.