APEC RO-PH90 vs APEC RO-90
Two of the reverse osmosis systems in our best reverse osmosis systems comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: 6-stage 90 GPD alkaline under-sink RO with a named WQA contaminant list
Check price at AmazonBest for: 5-stage 90 GPD under-sink RO with a named WQA contaminant list
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | APEC RO-PH90 | APEC RO-90 | Weight |
|---|---|---|---|
| Daily productionThe maker's rated gallons per day, usually at a stated feed pressure. Missing values take the category minimum. | 90 GPD | 90 GPD | 24% |
| NSF/ANSI 58 namedYes when the official page names NSF/ANSI 58 (or WQA certification to 58). A generic certified claim without the standard is No. | No | No | 20% |
| Broader named certificationYes when the official page names an additional NSF/ANSI standard such as 42 or 53, or lists certified contaminant reductions beyond TDS. NSF/ANSI 372 (lead-free materials) alone is not enough. | Yes | Yes | 16% |
| Drain water per product gallonComputed from a clearly worded pure-to-drain or product-to-waste ratio. Lower is less wastewater. Missing values, including traditional tank systems that do not publish a ratio, take the category minimum. | Not listed | Not listed | 16% |
| Filtration stagesStage count the maker lists. Missing values take the category minimum. | 6 | 5 | 12% |
| WarrantyLimited warranty length the official page publishes, in years. Missing values take the category minimum. | Not listed | Not listed | 12% |
| Daily production (maker) | 90 gallons per day @ 60 psi, 75 gallons/day @ 50 psi and 77 deg F | 90 gallons per day @ 60 psi, 75 gallons/day @ 50 psi and 77 deg F | info |
| Filtration stages (maker) | 6 stages | 5 stages | info |
| NSF/ANSI 58 (maker) | WQA Gold Seal Certified (NSF/ANSI 58 is not named on the page we used) | WQA Gold Seal Certified (NSF/ANSI 58 is not named on the page we used) | info |
| Broader named certification | Official page names an additional NSF/ANSI standard (for example 42 or 53) or certified reductions beyond TDS | Official page names an additional NSF/ANSI standard (for example 42 or 53) or certified reductions beyond TDS | info |
| Drain ratio (maker) | Not listed | Not listed | info |
| Drain water per product gallon | Not listed | Not listed | info |
| Warranty (maker) | Not listed | Not listed | info |
| Tank capacity (maker) | 4 gallons. 14 gallons optional | 4 gallons. 14 gallons optional | info |
| Alkaline stage (maker) | 6th-stage mineral filter | Not listed | info |
| Certified reductions (maker) | Official page says the system is certified to reduce Arsenic+3, Arsenic+5, Barium, Cadmium, Chromium-3, Chromium-6, Copper, Fluoride, Lead, Radioactivity, Selenium, and Turbidity | Official page says the system is certified to reduce Arsenic+3, Arsenic+5, Barium, Cadmium, Chromium-3, Chromium-6, Copper, Fluoride, Lead, Radioactivity, Selenium, and Turbidity | info |
| Package weight (maker) | Not listed | 25 lbs | info |
| Feed water pressure (maker) | Not listed | 40-85 psi | info |
| HydroPick score | 2.1/10 | 2.0/10 | 100% |
Where each one comes out ahead
APEC RO-PH90
Better published figure on: Filtration stages.
What we like
Watch out for
- Drain water per product gallon not published by APEC
- Warranty not published by APEC
APEC RO-90
No scored spec where it is strictly ahead; its case rests on the strengths below.
What we like
Watch out for
- Drain water per product gallon not published by APEC
- Warranty not published by APEC
Verdict
Ultimate-series siblings. Both official tables list 90 GPD at 60 psi and the same WQA contaminant-reduction list. The RO-PH90 adds a 6th-stage mineral filter; the RO-90 is a 5-stage system.
- APEC RO-PH90: APEC: RO-PH90
- APEC RO-90: APEC: RO-90