Brand comparison
APEC Water Systems scores 5.8 across 22 products; Aquasana scores 5.6 across 18. They overlap in whole house. That is 18% of what APEC Water Systems sells and 39% of what Aquasana sells. APEC Water Systems leads on value, Aquasana on certification coverage.
All 22 APEC Water Systems products
22 of 22 products scored · $231 – $1,900
Buy Now
All 18 Aquasana products
18 of 18 products scored · $120 – $6,640
Buy NowAcross everything we scored, APEC Water Systems edges ahead by 0.15 — too close to call.
Both brands also sell into Reverse Osmosis and Well Water. Neither side carries enough scored products there for a median we would publish, so this comparison does not cover them.
has the edge · 5.8 vs 5.6
APEC Water Systems is ahead by a nose: 0.15 points, less than a score moves between two sizes of the same system. The trade-offs below decide it.
Pick APEC Water Systems when
Value matters most5.0vs3.5
Pick Aquasana when
Certification coverage matters most7.0vs2.0
Scored 16 September 2026 from published specs and owner reviews. We don't buy or test units. How we score
Median scores on a 0–10 scale.
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
No notes for this one.
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
No notes for this one.
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
Same score
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
No notes for this one.
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
No notes for this one.
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
APEC Water Systems top-scored: GREEN-CARBON-15 Whole House Coconut Carbon Filtration System
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
No notes for this one.
Independent sources pooled per brand. N of M = how many scored products carry the brand-level reading shown, out of all scored.
APEC Water Systems
Brand rollup across scored products. 1 of 22 scored products carry this reading.
Aquasana
Brand rollup across scored products. 2 of 18 scored products carry this reading.
APEC Water Systems
Brand rollup across scored products. 1 of 22 scored products carry this reading.
Aquasana
Brand rollup across scored products. 2 of 18 scored products carry this reading.
APEC Water Systems
Brand rollup across scored products. 1 of 22 scored products carry this reading.
Aquasana
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Same score
APEC Water Systems
Brand rollup across scored products. 1 of 22 scored products carry this reading.
Aquasana
Brand rollup across scored products. 2 of 18 scored products carry this reading.
APEC Water Systems
Brand rollup across scored products. 2 of 22 scored products carry this reading.
Aquasana
Brand rollup across scored products. 2 of 18 scored products carry this reading.
The scores above are our reading of the evidence below. This is the evidence.
Certifications are recorded per product as published by the manufacturer. Anything carrying a NSF/ANSI standard can be checked against NSF's own certified product listings.
Certifications held
APEC Water Systems
22 of 22
Aquasana
18 of 18
Warranty terms
APEC Water Systems
22 of 22
Aquasana
18 of 18
Not a loss for either brand. If you need one of these, the choice is already made.
The three best-scoring products each brand sells in every category they both compete in, ranked by overall score.
Contaminants — Shared: Disinfectants & byproducts, Sediment & particulate, Industrial & agricultural chemicals, Taste & odour. Aquasana only: Heavy metals, Hardness & scale, Microbiological, PFAS, Pharmaceuticals & microplastics.

GREEN-CARBON-15-FG
$1,100
Buy Now18th of 55 in Whole House
37th of 55 in Whole House

WTS-MAX-20-FG
$1,600
Buy Now21st of 55 in Whole House

WH-1010-CT-UVM-BLM
$6,640
Buy Now38th of 55 in Whole House

WTS-MAX-10-FG
$1,000
Buy Now32nd of 55 in Whole House
43rd of 55 in Whole House
APEC Water Systems 5.8 from 22 scored products; Aquasana 5.6 from 18. Too close to call overall: APEC Water Systems has the edge by 0.15, which is inside the margin, so the difference is in the criteria.
Certification Coverage: APEC Water Systems medians 2.0, Aquasana medians 7.0 (Aquasana by 5.0).
APEC Water Systems on value — APEC Water Systems 5.0, Aquasana 3.5.
APEC Water Systems on build quality — APEC Water Systems 7.0, Aquasana 6.0.
APEC Water Systems sells water softeners; Aquasana does not, in the products we scored.
Aquasana sells under sink, shower & faucet, and countertop; APEC Water Systems does not, in the products we scored.
APEC Water Systems: APEC Water Systems GREEN-CARBON-15 Whole House Coconut Carbon Filtration System. Aquasana: Aquasana Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons.
Our own product medians: 22 APEC Water Systems and 18 Aquasana. A criterion is compared only where both brands clear the floor.
Scores calculated 16 September 2026 · Products excluded where fewer than two independent sources cover them · · How we score