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How to Budget for an Under-Sink Water Filtration System

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How to Budget for an Under-Sink Water Filtration System

Upgrade your kitchen water with a filtration system installed during annual maintenance.

VoAtlas editorial Updated · 3 min read
Typical cost $350 before anything else
Across the 0% window $23.33/mo 15 months, no interest

How we got that: $350 spread evenly across the 15-month introductory window on the Discover it® Cash Back. Checked · at the bank Carry a balance past the window and the standard APR applies to what is left.

Getting clean water straight from the tap changes your kitchen routine immediately, cutting out pitchers and bottled water for good. Plumbers usually charge around $350 for the labor and parts, and the install only takes about an hour once they are under the sink. Spring is a smart time to book this work because local plumbers often run seasonal tune-up specials before their summer rush.

Before you commit to a price, get at least two different quotes from local plumbers to make sure you are not overpaying. You want someone who stands by their work and checks for leaks before they leave your house. Once you have a firm price locked in, you can figure out the best way to pay for it without straining your cash flow.

That 0% intro APR for 15 months on purchases and balance transfers is a deadline, not free money, so make sure you pay off the balance before the clock runs out or standard interest will kick in on what is left.

The steps

  1. 01

    Get multiple quotes

    Call at least two local plumbers to price the installation. Compare their rates and check what is included in the plumbing fee so you do not get hit with surprise charges.

  2. 02

    Match your timeline

    Schedule the installation during your kitchen's annual maintenance check to save time. Having the plumber do both tasks in one visit means you only pay for a single trip fee.

  3. 03

    Use your card term

    If you want to space out the cost, you can use the Discover it Cash Back, which gives you 0% intro APR for 15 months on purchases and balance transfers. If you spread the typical $350 cost across that 15-month window, you are looking at about $23.33 per month.

  4. 04

    Clear the cabinet

    Take everything out from under your kitchen sink the night before. Plumbers need room to work, and clearing the space makes the install go much faster.

  5. 05

    Test the flow

    Run the new filtered tap for a few minutes right after the plumber finishes. Check underneath with a flashlight to make sure all the connections are bone dry.

  6. 06

    Check the card terms before you commit

    Every figure we publish for the Discover it® Cash Back carries the date a person verified it against Discover and a link to where they checked. Intro windows and APRs change without notice, so confirm the current terms before applying.

    See Discover it® Cash Back terms →

Common questions

How long does an under-sink filter install take?

Most plumbers can finish the job in about an hour. If your plumbing is old or cramped, it might take a little longer.

Do I need to buy replacement filters right away?

The system usually comes with the first filter included. Ask your plumber how long that specific cartridge is rated to last before you need a spare.

Will this affect my main kitchen faucet?

No, an under-sink filtration system typically adds a small, dedicated secondary faucet to your sink deck. Your main faucet keeps working normally.

Can I install this system myself?

You can if you are handy with basic tools and plumbing tape. Hiring a pro just guarantees it will not leak and saves you the headache.