Whole house water filter cost calculator

What you pay for, and which part keeps growing

The bill has three parts: the system, the installation and the replacement parts. The first two you pay once. The parts come back every few months for as long as you keep the system, so the longer you keep it, the more the running cost decides the total.

How much it decides depends on the tank. For a household of 3 over 10 years, parts are 40% of the total for the SpringWell CF and 83% for the Aquasana HealthShield. Per 1,000 gallons of filtered water, the parts cost:

The SpringWell combo matches the CF per gallon because its softener salt isn't counted. The Rhino and the Max Flow cost more a year than the SpringWell mostly because their tank is replaced whole: $1,898 and $2,598 every 10 years, against $352 for SpringWell's carbon media. Which system filters what is a separate question. The whole house filter comparison has the certifier listings for each.

When the gallons run out before the calendar

Every main tank has two limits, and the brand says to replace it at whichever comes first. The Rhino, the Max Flow and SpringWell's media are rated for 1,000,000 gallons or 10 years. The HealthShield tank is rated for 165,000 gallons or 2 years.

At 82 gallons a person a day, the EPA WaterSense figure for use at home, the gallons run out first from 4 people on the 1,000,000-gallon systems. A Rhino tank then lasts 100 months, not 120, and at 8 people about 4.2 years. The HealthShield runs out of gallons from 3 people. At 3 its tank lasts 22.1 months, and at prices checked Oct 13, 2026 the yearly cost rises from $1,897 at Aquasana's interval to $2,052.

That is why the calculator asks how many people live in the home. A tank sold as "10 years" lasts 10 years only in a small household.

Installation cost

Installation is the one number I can't give you. As of Oct 14, 2026, I couldn't find a national price for installing a whole house filter that traces back to data. Plumbing company pages quote ranges for their own area. Get a written quote and enter it in the calculator. It adds the same amount to every system, so it changes the totals but not the order. How to compare installer quotes lists what a quote should spell out.

What comes in the box sets part of the bill. Aquasana ships the Rhino with an assembly kit for 3/4" or 1" main lines: Schedule 80 PVC fittings, a drain valve, a shut-off valve, the tank connections and the pre- and post-filter housings. As of Oct 13, 2026, its Pro-Grade Bypass Kit is an extra $248, brass parts without the PEX tubing. SpringWell puts a bypass valve in the cart by default, $78.74 for the CF, and a second one at $58.79 for the filter and softener combo. A 1-inch installation connector is $83.99. A bypass lets you change filters without shutting off water to the house. My install guide shows how a bypass loop is plumbed.

What a plumber's quote should cover

The Rhino installation manual lists what the job needs beyond the system itself. Each item is parts and labor in a quote:

• A spot where the main line enters the house, before the water heater, indoors and out of sun and frost. The Rhino needs about 50 inches of height and 44 inches of floor space.
• A shut-off valve to isolate the system, plus the bypass loop if you want one.
• A pressure reducing valve if your line pressure is above 60 psi. The Rhino is rated for 20 to 100 psi.
• Water hammer arrestors at the start and end of the system, and a check valve after it, before the water heater.
• On metal pipes, two grounding clamps and #4 copper wire, which the manual calls essential for safety.
• For a salt softener, a drain for the brine it flushes when it regenerates.

Aquasana strongly recommends a licensed plumber, because a plumber carries insurance against damage from an installation error. The same manual says some local codes require a licensed plumber or certified installer to cut into a drinking water line. Some owners do it themselves. One wrote on SpringWell's product page that the house was pre-plumbed and the job took "about a half day after planning out the remaining plumbing."

Well water and hard water add to the price

The five systems in the calculator are carbon filters. On a well or with hard water, the usual add-ons can cost as much as a second system.

Hard water. A carbon filter doesn't soften water. The SpringWell filter and softener combo costs $1,071 more than the filter alone as of Oct 13, 2026, and the salt it uses isn't in the calculator. Aquasana sells a salt-free conditioner as an add-on: $1,548 with the Rhino and $1,648 for the tall version with the Max Flow and the HealthShield. Whether you need either depends on how hard your water is, covered in the filter or softener section of the comparison.

Well water. Aquasana labels the Rhino "Recommended for Well Water" and says on the same page that a UV filter must be added for bacteria and viruses. As of Oct 13, 2026, its UV add-on is $1,598 for the Rhino, and the Max Flow UV is the same price. SpringWell's UV add-on is $1,100.50. UV lamp replacements aren't in the calculator yet. Before you price any of it, test the well: CDC advises testing at least once a year for total coliform bacteria, nitrates, total dissolved solids and pH. A water test kit tells you what you're treating. The well water section of the comparison explains which UV listings fit which water.

How to cut the yearly cost

Leave the hose and the sprinklers out. The Rhino manual recommends installing the system after outdoor hose bibs and irrigation lines, so garden water doesn't run through the tank. EPA puts about 70% of home water use indoors. For 3 people, switching the calculator to "Indoor only" takes the HealthShield from $2,052 to $1,897 a year at Oct 13, 2026 prices, about $1,545 over 10 years. For the other four it starts to matter from 4 people, where indoor use keeps the tank within its 10 years.

Skip upgrades that only save trips. Aquasana's Low Maintenance Pre-Filter is $348 up front as of Oct 13, 2026, and its replacement is $73.99 for 6 months. The standard pre-filter is a 3-pack at $36.99 for the same 6 months. You change it twice a year instead of six times, and pay about $148 a year instead of $74.

Take the filter discount if you stay with Aquasana. Its Water for Life membership takes 15% off pre- and post-filters ($31.44 instead of $36.99 a pack on Oct 13, 2026) and adds free shipping. It's free to join and cancel. The main tank shows one price, so the saving is about $22 a year.

Size it to the house, not to the biggest tank. The Max Flow costs $800 more than the Rhino up front as of Oct 13, 2026 and about $70 more a year. Aquasana sizes the Rhino for homes with up to 2.5 bathrooms and 4 people, and the Max Flow for up to 6 bathrooms and 8 people.