Which RKIN Water Filter System Is Right for Me?

Choosing the right water filter depends on what you need: drinking water purification, whole-house protection, or both. Here is a quick guide to help you pick the best option.

I Want Pure Drinking Water

ZIP (Zero Installation Purifier) — Best if you rent or do not want to modify your plumbing. It sits on your countertop, plugs into a standard outlet, and produces RO-purified water with zero installation. Great for apartments and small kitchens.

U1 — Best for families who want hot and cold purified water on demand. The U1 has a compact design, Wi-Fi connectivity, and dispenses water at multiple temperatures. Perfect if you drink a lot of tea, coffee, or want instant hot water.

Flash — Best for homeowners who want a permanent undersink setup. Installs under your kitchen sink with a dedicated faucet. No electricity needed — it runs on your home water pressure. High flow rate with a storage tank for instant access.

I Want to Filter All the Water in My Home

OnliSoft Pro — Best all-around whole-house system. Combines salt-free water conditioning with carbon filtration to tackle hardness, chlorine, and chloramines from every faucet. No salt bags, no drain line, no electricity.

Water Softener — Best for very hard water (above 15 GPG). Uses salt to fully remove hardness minerals. Ideal if you see heavy scale buildup on fixtures and appliances.

Carbon Filter System — Best for city water homes that want to remove chlorine, chloramines, and chemical taste/odor from every tap. Often paired with a softener or conditioner.

I Have Well Water

Well water often has unique challenges like iron, sulfur (rotten egg smell), and manganese staining. Check out our Well Water Systems or talk to our team — we can recommend the right combo for your water test results.

Still not sure? Schedule a free 30-minute consultation with one of our water specialists. No pressure, just honest advice.

Feb 14, 2026

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