FS-TFC 5-Stage Reverse Osmosis Water Filtration System 100GPD - Fast

In this review the FS-TFC 5-Stage Reverse Osmosis Water Filtration System 100GPD is evaluated as a compact under-sink RO unit aimed at households and small commercial use. The bottom line: it is for anyone who wants near-complete contaminant removal and fast dispensing from a small footprint, with the main reason to buy being the combination of a tested high flow rate and a very high remove rate up to 99.999% for common toxins. Installation is accessible for a competent DIYer and the system is supplied with extra filters to lower first-year running cost.

Key Features

• 5-stage filtration: Multiple stages remove chlorine, taste, odor and a wide range of contaminants so water tastes clean and is safer for everyday use.
• High removal rate: Claims a remove rate up to 99.999% which targets fluoride, arsenic, lead, nitrates and many VOCs for greater peace of mind.
• Fast flow performance: Tested at 18L per hour at 60 Psi so you can get about 200ml in roughly 5 seconds, reducing wait time compared with slower RO units.
• Compact footprint: Mini size designed to fit under a standard kitchen sink, making it suitable for kitchens, bathrooms, RVs or small offices with limited space.
• DIY installation: Comes with all parts and clear instructions and video resources, enabling most users to install without paying for professional help.
• Cost-effective upkeep: Includes extra free filters and has an economical replace cost that keeps ongoing expenses low.

Who It's For

This system is best for families, renters and small businesses that need reliable purified water without a large under-sink unit or electrical requirements. The fast flow and high contaminant removal make it a good fit where taste and safety matter, for cooking, coffee and baby formula.

It is less appropriate for those who need extremely large daily volumes beyond a household level or who prefer systems with built-in electric pumps or whole-house filtration. Also, if you cannot do a simple DIY installation or have unusually low incoming water pressure, consider a different model or professional help.

Pros & Cons

Pros

• Excellent water quality and taste due to comprehensive 5-stage filtration and high remove rate.
• Fast dispensing speed tested at 18L per hour, reducing wait time for a glass of water.
• Compact, under-sink design that fits tight spaces and works in RVs, kitchens and offices.
• Includes extra filters and offers inexpensive replacement costs for good value over time.

Cons

• Some customers reported occasional leakage issues, so careful installation and seal checking is important.
• Filter housings and cartridges are relatively small, which may require more frequent changes than larger systems.

Specifications

Filtration stages	5-stage reverse osmosis
Flow rate	Tested 18L per hour at 60 Psi (approx 200ml in 5 seconds)
Remove rate	Up to 99.999% (chlorine, VOCs, fluoride, arsenic, lead, nitrates, heavy metals)
Installation	Under-sink / countertop / RV / office, DIY with included parts
Power	No electricity required
Warranty & support	2 year manufacturer warranty with registration and lifetime support
Includes	Extra 4 replacement filters included

Our Verdict

The FS-TFC 5-Stage RO 100GPD is a practical choice for households and small commercial users who want high contaminant removal and a quick flow from a compact unit. It delivers excellent taste and strong filtration performance at a low ongoing cost, though buyers should install carefully to avoid leaks and be prepared for regular filter replacement due to the small cartridge size. Overall it represents good value for anyone prioritizing safe, great-tasting tap water.

Frequently Asked Questions

How fast is the water flow?
The tested full flow rate is 18L per hour at 60 Psi, which equates to about 200ml in 5 seconds.

Can I install it myself under a standard sink?
Yes, the unit is designed for DIY installation with all parts and clear instructions and video guidance included.

Does it need electricity to run?
No, the system operates without electricity and uses a low drain ratio for efficient operation.