Whole-house filtration
A whole-house filter treats water where it enters your home, so every faucet, shower and appliance gets the same water. The media inside should match what your test actually finds.
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Common types
| Filter type | Used for |
|---|---|
| Sediment | Sand, grit and rust particles |
| Activated carbon | Chlorine taste and smell |
| Oxidizing or air-injection media | Iron and sulfur smell, mostly on wells |
| Combination systems | Homes with more than one complaint |
Filter or softener?
They solve different problems. A filter deals with taste, smell and particles. A softener deals with hardness. Many homes want one or the other, and some need both, in which case the filter is normally plumbed in first.
Ongoing upkeep
Cartridge systems are cheaper up front but need new cartridges. Backwashing tanks cost more to install but clean themselves and need only periodic media changes. Ask for the yearly running cost as well as the installed price, and check that the system won’t restrict flow for your bathrooms.
Frequently asked questions
How much does whole-house filtration cost?
Most installed systems run $1,100–$3,500, according to national cost guides. Larger backwashing or specialty systems can run higher.
Will a whole-house filter lower my water pressure?
A properly sized system shouldn’t cause a noticeable drop. Undersized or clogged cartridges are the usual reason for pressure problems.
Do I still need a drinking-water filter?
Not necessarily. If taste is your only concern, a whole-house carbon system may be enough. If you want lower mineral content for drinking, add under-sink reverse osmosis.
How often is media replaced?
Cartridges often last a few months. Tank media can last several years, depending on the water and the type of media.