Water Filter Calculator
Choose the filtration system and whether the plumbing loop can be reused to get an installed cost range.
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Estimated cost
$1,200 – $2,800
Typical figure around $2,000.
- System
- Two-stage carbon, whole house
- Plumbing
- Reused — unit fits the existing loop
- Installed range
- $1,200 – $2,800
Installed prices including the bypass valve, fittings and labour. A water test before choosing the system costs $30–$100 and prevents buying the wrong filter.
Planning estimate only — confirm quantities with your supplier or contractor before ordering.
How this estimate is calculated
The estimate is built from filtration system and plumbing loop, then priced at national average rates. It reports system, plumbing and installed range, with quantities rounded up so you are never short of material and the standard waste allowance already included where it applies.
Installed prices including the bypass valve, fittings and labour. A water test before choosing the system costs $30–$100 and prevents buying the wrong filter.
The dollar range is a national average, so treat it as a starting point rather than a bid. Labor rates, permit fees and material delivery differ by region — the state table below shows how your state compares, and construction cost by state breaks the picture down further.
Prefer the longer version? Read our guide to Should you add a whole-house water filter during a remodel.
Cost by filtration system
Each row prices the same default job shown in the calculator above, changing only the filtration system. Use it to see what the upgrade or the cheaper option really costs before you commit.
| Filtration system | Low | High |
|---|---|---|
| Sediment + carbon, whole house | $900 | $2,200 |
| Two-stage carbon, whole house | $1,200 | $2,800 |
| Water softener | $1,500 | $4,000 |
| Reverse osmosis, under sink | $600 | $1,500 |
What the same job costs by state
Every row applies that state's construction cost index to the national range calculated above. The index bundles local labor rates, permit fees and material delivery, so it is a planning figure rather than a bid.
| State | Index | Low | High |
|---|---|---|---|
| Ohio | 0.92 | $1,104 | $2,576 |
| Texas | 0.93 | $1,116 | $2,604 |
| North Carolina | 0.94 | $1,128 | $2,632 |
| Georgia | 0.95 | $1,140 | $2,660 |
| Arizona | 1.01 | $1,212 | $2,828 |
| Florida | 1.02 | $1,224 | $2,856 |
| Pennsylvania | 1.03 | $1,236 | $2,884 |
| Illinois | 1.05 | $1,260 | $2,940 |
| Colorado | 1.08 | $1,296 | $3,024 |
| Washington | 1.15 | $1,380 | $3,220 |
| California | 1.32 | $1,584 | $3,696 |
| New York | 1.42 | $1,704 | $3,976 |
Index 1.00 is the national average. See construction cost by state for metro-level figures and the projects homeowners ask about most.
Frequently asked questions
How much does a whole-house water filter cost?
A sediment and carbon system runs $900 to $2,200 installed, a two-stage carbon unit $1,200 to $2,800, and a water softener $1,500 to $4,000. Under-sink reverse osmosis costs $600 to $1,500.
Do I need a softener or a filter?
They solve different problems. A filter removes sediment, chlorine and taste; a softener removes the calcium and magnesium that cause scale. Hard water often needs both, and a water test tells you which one applies.
Should I install filtration during a remodel?
Yes, if the walls are already open. Running a bypass loop and a drain line is a few hundred dollars during a renovation and several thousand afterwards, because the work is in the walls and the floor.
How often do filters need changing?
Sediment cartridges every three to six months, carbon every six to twelve, and reverse osmosis membranes every two to three years. Softener resin lasts ten to fifteen years with regular salt.
Does this cost change from state to state?
Yes. Applying each state's construction cost index to the national range of $1,200 to $2,800, the same job runs from about $1,104 to $2,576 in Ohio (index 0.92) to $1,704 to $3,976 in New York (index 1.42).
What is not included in this estimate?
Installed prices including the bypass valve, fittings and labour. A water test before choosing the system costs $30–$100 and prevents buying the wrong filter. The figure is a national planning average for the work described above, not a contractor's quote.
