How to Install the iSpring RCC7AK: What to Expect

The RCC7AK is DIY-friendly, but it helps to know what you're getting into before you start. Here's a realistic breakdown of the process, timeline, and the steps most first-timers get wrong.

Time estimate

2–3 hours for most first-time installers

If you're comfortable with basic plumbing — connecting supply lines, using a wrench, and drilling a hole — the RCC7AK is manageable. iSpring's included guides and videos are genuinely helpful. Plan for a full afternoon on your first installation.

What you'll need

Everything in the box — iSpring includes all required hardware
Adjustable wrench or pliers
Drill with 1.375" bit for faucet hole (if your sink doesn't have a pre-drilled hole)
Bucket and towels for spills
Teflon tape (usually included)
Optional: TDS meter to verify performance after installation

Step-by-step installation overview

Turn off the cold water supply under the sink using the shut-off valve
Install the drain saddle on the drain pipe — this is where the waste water line connects
Install the feed water adapter on the cold water supply line under the sink
Install the faucet through the sink or countertop — iSpring's patented top-mounted design means you tighten from above, not underneath
Mount the filter housing assembly inside the cabinet — use the included bracket
Connect all tubing — color-coded connections make this straightforward
Connect the storage tank
Turn on the water supply and check all connections for leaks
Flush the system for 10–15 minutes before drinking the first water

The steps most people get wrong

Faucet nut direction — tighten clockwise from above using iSpring's top-mounted design. Don't overtighten.
Tubing connections — push tube all the way into each fitting until it stops, then give a slight tug to confirm it's locked. Half-inserted tubes cause slow leaks.
Tank valve — the storage tank valve must be open (turned counterclockwise) before the system will fill.
First flush — skipping the flush means drinking carbon fines from new filters. Always flush for at least 10–15 minutes.

Low water pressure?

The RCC7AK requires minimum 45 PSI. If your home has water pressure below this — common in well water systems or older homes — the system will produce water slowly or not at all. iSpring's solution is the RCC7P-AK, which includes a built-in booster pump for low-pressure installations.

Where to find iSpring's installation videos

Search "iSpring RCC7AK installation" on YouTube — iSpring's official channel has step-by-step video guides that walk through every stage. These are among the best installation videos in the water filter industry and significantly reduce first-timer mistakes.

iSpring RCC7AK on Amazon →