APEC ROES-100 Essence Reverse Osmosis System vs APEC Top Tier ROES‑50 Reverse Osmosis System
Side-by-side comparison of features, pricing, ratings, and alternatives.
The ROES-100 is the high-output model in APEC's Essence series, a five-stage under-sink reverse osmosis system rated at 100 gallons per day. That capacity is the reason to choose it over the more common 50 GPD systems: a higher production rate means the storage tank refills faster, so a busy household is less likely to run the tank down between uses. APEC states the system removes up to 99 percent of contaminants. The five stages combine sediment and carbon pre-filtration, the RO membrane itself and a final polishing stage, which is the standard under-sink RO arrangement. APEC sells a deep catalogue around it: replacement filter sets, tanks, pumps, leak detectors, housings and faucets, plus alternative configurations including tankless, countertop, UV and pH-remineralising variants.
The APEC ROES‑50 is a 5‑stage reverse osmosis system that delivers up to 50 gallons of purified water per day. It removes up to 99% of contaminants including chlorine, lead, fluoride, arsenic, and bacteria, providing crisp, great‑tasting water straight from your kitchen faucet. Designed for easy under‑sink installation, the system includes a high‑capacity storage tank, a dedicated faucet, and all necessary fittings. No electricity is required; it operates solely on household water pressure, making it an energy‑efficient solution for homes seeking reliable, on‑demand drinking water.
- High 100 GPD output suits larger households
- Comprehensive spare parts and filter availability
- Standard under-sink installation with a dedicated faucet
- Part of a range so upgrades and variants are easy to find
- Highly effective contaminant removal
- No electricity required
- High daily output (50 GPD)
- Easy DIY installation
- Under-sink installation is not practical in most rentals
- RO systems produce wastewater alongside purified water
- Consumes cabinet space for the unit and the storage tank
- Produces wastewater (approx. 3 gal per gallon filtered)
- Requires periodic filter changes
- Under‑sink space needed for tank and filters
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