Certification Coverage
+5 APEConly the APEC RO-Hi: NSF/ANSI 58; only the Aquasure Premier Elite 100 GPD: Not certified.
Product comparison · Reverse Osmosis
APEC RO‑Hi vs Aquasure Premier Elite 100 GPD
The APEC RO-Hi scores 6.6 and ranks 11th of 69 in Reverse Osmosis; the Aquasure Premier Elite 100 GPD scores 5.5 and ranks 59th of 69 in Reverse Osmosis. The RO-Hi leads on certification coverage.
All 22 APEC Water Systems products 
APEC RO‑Hi
$368 · 11th of 69 in Reverse Osmosis
- Certification Coverage — 7 against 2
6.6
5.5
Across everything we scored, APEC RO-Hi sits 1.09 ahead — led by certification coverage.
Verdict
RO-Hi ahead · +1.09 (6.6 vs 5.5)Pick the APEC RO-Hi when
Certification coverage matters7vs2NSF/ANSI 58 only on the RO-Hi
Warranty & support matters3vs1
Build quality matters8vs6
Pick the Aquasure Premier Elite 100 GPD when
A criterion we do not score decides itthe Premier Elite 100 GPD leads on none of the ones we do
Where the APEC RO‑Hi and Aquasure Premier Elite 100 GPD differ
Scores on a 0–10 scale. Each row is one criterion, biggest difference first.
Build Quality
+2 APECWarranty & Support
+2 APECAPEC RO-Hi: 2 Years · Aquasure Premier Elite 100 GPD: 1 Year.
Ease of Installation
+1 APECContaminant Reduction
tiedFlow Rate
tiedFilter Life
tiedValue
tiedWhat APEC RO‑Hi and Aquasure Premier Elite 100 GPD owners report
Independent sources, scored for each model. RO-Hi on 5 of five, Premier Elite 100 GPD on 5.
The Aquasure Premier Elite 100 GPD reading covers its product line.
What they say
APEC RO‑Hi
- An r/WaterTreatment thread compares the RO-Hi against the ROES-100 and the tankless range, and the poster reports back after speaking to APEC directly: the two share drain line and housing dimensions.
- That thread ends with the poster choosing the ROES-100 on price.
- Faucet flow is the reason people pick the RO-Hi when they do.
Aquasure Premier Elite 100 GPD
- Two r/WaterTreatment and r/HomeMaintenance threads cover the Premier RO platform.
- One owner reports 420 ppm TDS at the faucet on a new install, settling to about 360, which is directly relevant here because low feed pressure is one of the standard explanations for poor rejection and the pump on this model is sold as the fix for it.
- The second describes the Flowlok leak-detection disc deploying during a filter change.
- Nothing addresses the booster pump itself.
The APEC RO-Hi reading covers its product line; the Aquasure Premier Elite 100 GPD reading covers the whole brand.
What they say
APEC RO‑Hi
- Written coverage of the Ultimate range applies here, including the lab results on the shared five-stage path and the criticism that the WQA listing covers total dissolved solids alone.
- No source has separately measured the dispensing improvement the three-eighths inch path is sold on.
Aquasure Premier Elite 100 GPD
- Modernize and Quality Water Lab cover Aquasure through the Harmony softeners.
- Dominick Plumbing notes the absence of NSF certification across the brand.
- No third-party review of the Premier RO systems exists.
YouTube
+1 AquasureThe APEC RO-Hi reading covers its product line; the Aquasure Premier Elite 100 GPD reading covers its product line.
What they say
APEC RO‑Hi
- Video testing covers the Essence chassis and treats the RO-Hi as a tubing variant.
- Nothing independent has been published on this SKU alone, so the score reflects a pool describing the family.
Aquasure Premier Elite 100 GPD
- IrixGuy's Adventure Channel, 98,800 subscribers, has two independent owner reviews of the Premier RO - one after several months at 6,100 views and a several-years follow-up - and a separate third-party self-install walkthrough covers the same 4-stage system.
- None names a specific capacity, so this is the Premier line rather than this model.
- No video addresses this capacity or the Flowlok stage on its own, and the RO roundups that bench-test here do not include Aquasure.
- Brand-level coverage is the Harmony softeners: DIY Homestead Projects at roughly 115,000 views, NKP Home Improvement at roughly 94,000, geminidrums at 15,000 on the fine mesh and IrixGuy's two-year owner review at 13,000.
Amazon
+3 APECThe APEC RO-Hi reading covers its product line; the Aquasure Premier Elite 100 GPD reading covers its product line.
What they say
APEC RO‑Hi
- The RO-Hi has no readable rating on its own Amazon listing.
- Its Ultimate siblings do: 4.5 across roughly 2,700 ratings on the RO-90, 4.4 across 914 on the RO-PH90 and 4.2 across 241 on the RO-PERM.
- Amazon's brand panel renders in two forms across APEC's listings: a proportion line reading 91 percent of ratings for the brand at 4-plus stars over 50,000-plus orders in the trailing three months, and a badge form carrying Highly Rated, Trending and Low Returns with no denominator.
- The proportion form is the scoreable one and is what carries here.
Aquasure Premier Elite 100 GPD
- No readable Amazon rating sits on the Elite 100 GPD with pump.
- The nearest figure is the Premier Pro 100 GPD at 4.2 from 16 - a thin pool and the lowest product-level Aquasure reading on the platform - so the line evidence reaching this model is both scarce and unflattering.
Owner reviews
tiedThe APEC RO-Hi reading covers its product line; the Aquasure Premier Elite 100 GPD reading covers its product line.
What they say
APEC RO‑Hi
- Home Depot and Lowe's both stock the Ultimate range, and the RO-PH90 sibling reads 4.7 across 458 reviews at Home Depot.
- Trustpilot's brand profile is 4.1 from 658 reviews.
Aquasure Premier Elite 100 GPD
- No Home Depot, Lowe's or Walmart listing was found for the pumped Elite, so the figure is the pumpless Premier configurations at the same retailer: 4.5 of 5 from 41 reviews on the 75 GPD Advanced, 4.2 from 10 on the 100 GPD Pro and 4.0 from 8 on the alkaline version.
- Those pools are native, with verified-purchase entries and Aquasure replying under its own support address.
- The line figure is worth less here than elsewhere, because the booster pump is the component most likely to fail on this system and none of those reviewers own one.
APEC RO‑Hi vs Aquasure Premier Elite 100 GPD: pros and cons
What each one does well, and where it falls short.
Pros 5
Three-eighths inch output tubing roughly doubles faucet flow over standard quarter-inch
WQA Gold Seal certification to NSF/ANSI 58
Same Filmtec membrane and four-gallon tank as the RO-90
Matched lead-free faucet included rather than sold as an upgrade
Assembled in California with lifetime technical support
Cons 5
Faster dispensing does not change the 90 GPD production rate or refill time
103 dollars over the RO-90 for tubing and a faucet
Certified scope is TDS reduction only
Warranty is one year unless registered within eight weeks
Drain ratio is unchanged from the standard Ultimate models
Pros 5
Booster pump genuinely improves rejection, output and water efficiency on low-pressure supplies
The only Aquasure RO suited to a well or a long municipal run
100 GPD membrane with a 1.5 to 1 pure-to-drain ratio
Lead-free LED faucet, tank and full cartridge set included
Flowlok leak protection and ShokBlok pressure regulation built in
Cons 6
Requires a mains outlet inside the sink cabinet, which many kitchens do not have
The pump is a moving part and the first likely failure point, under a one year warranty
No system-level NSF certification; the Aquasure listing covers membrane materials only
A hundred dollars over the Premier Pro for hardware that adds nothing on normal house pressure
Pump noise during tank refill is audible in a quiet kitchen
No retailer listing of its own, so nothing readable describes the pump in service
APEC RO‑Hi vs Aquasure Premier Elite 100 GPD: the numbers
Price, scores and rank, then only the specs that differ. Green marks the side with more.
6.6
11th of 69 in Reverse Osmosis
5.5
59th of 69 in Reverse Osmosis
Filtration
Both Carbon Block, Reverse Osmosis, Sediment
APEC RO‑Hi
+ Granular Activated Carbon
Aquasure Premier Elite 100 GPD
Nothing more
Removes
Both Chlorine, Fluoride, Heavy metals, Taste and Odor, TDS, Lead, VOCs
APEC RO‑HiMore
+ Arsenic, Chromium, Nitrate, PFAS, Cysts
Aquasure Premier Elite 100 GPD
+ Rust, Sediment, Pharmaceuticals
SpecAPEC RO‑HiAquasure Premier Elite 100 GPD
CertificationsNSF/ANSI 58Not certified
Warranty2 Years1 Year
HousingBPA-Free PlasticNot listed
Weight26 lb (shipping)30 lb (shipping)
Made inUSANot listed
Same on both
- Flow rate Under 100 GPD
- Filter life 6-12 months
- Connection Point of use fitting
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APEC RO‑Hi vs Aquasure Premier Elite 100 GPD: common questions
Is the APEC RO-Hi better than the Aquasure Premier Elite 100 GPD?
On our scores, the APEC RO-Hi is ahead, 6.6 against 5.5. The APEC RO-Hi leads on certification coverage (7 against 2), warranty & support (3 against 1), build quality (8 against 6) and ease of installation (6 against 5).
Which is cheaper, the APEC RO-Hi or the Aquasure Premier Elite 100 GPD?
The Aquasure Premier Elite 100 GPD, at $340 against $368: $28 less.
Which has more certifications, the APEC RO-Hi or the Aquasure Premier Elite 100 GPD?
The APEC RO-Hi. The APEC RO-Hi lists NSF/ANSI 58; the Aquasure Premier Elite 100 GPD lists none.
Which removes more contaminants, the APEC RO-Hi or the Aquasure Premier Elite 100 GPD?
The APEC RO-Hi lists 12 and the Aquasure Premier Elite 100 GPD lists 10, with 7 on both lists. Only the APEC RO-Hi lists Arsenic, Chromium, Nitrate, PFAS and Cysts.
Which has the longer warranty, the APEC RO-Hi or the Aquasure Premier Elite 100 GPD?
The APEC RO-Hi: 2 Years, against 1 Year.
What do owners say about the APEC RO-Hi and the Aquasure Premier Elite 100 GPD?
Across 5 independent sources scored for both, the APEC RO-Hi is ahead on Reddit, Google and Amazon; the Aquasure Premier Elite 100 GPD is ahead on YouTube; Owner reviews is level.
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Scores calculated 16 September 2026 · Products excluded where fewer than two independent sources cover them · How we score