Whole House Carbon Filters

Yes, when chlorine, chloramine, sulfur smell, or bad taste is your problem. A whole-house carbon filter removes chlorine taste and odor, disinfection byproducts (THMs and HAAs), VOCs, and the organics behind off-tastes at every tap, for 4 to 7 years on a tank system before a media refresh. It is not worth buying as an iron, hardness, or fluoride filter, since carbon does not treat any of those.

Carbon is a polish, not an all-in-one filter. It does not remove iron, manganese, hardness, fluoride, nitrate, or most dissolved solids, so it cannot replace an iron filter, a softener, or reverse osmosis. Tank systems take floor space (10"x54" or 13"x54"), and the backwashing models need a drain and a 120V outlet. The media is eventually exhausted and is replaced every 4 to 7 years on the tank filters.

Our whole-house carbon ranges from $259 to $2,495. The 20" Big Blue cartridge kit is $259, the non-backwashing Centaur filters run $1,495 (1.5 cu ft) and $1,695 (2.5 cu ft), and the catalytic backwashing filters run $1,895 (1.5 cu ft) and $2,495 (2.5 cu ft). Most city homes choose the 2.5 cu ft non-backwashing filter. Budget for a media refresh every 4 to 7 years on the tank systems.

Chlorine, chloramine, disinfection byproducts, VOCs, sulfur smell, and bad taste and odor. Centaur catalytic carbon adsorbs chlorine, THMs and HAAs, pesticides and herbicides, and the organics behind off-tastes, and its catalytic surface also breaks down chloramine and converts hydrogen sulfide (rotten egg smell) to harmless elemental sulfur. It gives meaningful background PFAS reduction but is not an NSF/ANSI 53 certified PFAS-removal system. It does not remove iron, hardness, fluoride, or dissolved minerals.

Yes, with catalytic carbon. Chloramine (chlorine combined with ammonia) needs catalytic carbon rather than ordinary activated carbon. Every Mid Atlantic Water carbon tank filter, non-backwashing and backwashing, ships Centaur catalytic carbon by Calgon Carbon, the grade specified for chloramine, so all of them reduce it. For chloramine on city water the non-backwashing Centaur filter is all you need: the catalytic media removes chloramine with no drain, no outlet, and no backwashing valve. Step up to the Fleck 2510SXT backwashing model only if you also have rotten-egg sulfur or sediment. Check your utility's Consumer Confidence Report to confirm whether you have chlorine or chloramine.

Yes, for the contaminants carbon is designed for. A whole-house Centaur catalytic carbon filter reliably removes chlorine taste and odor, chloramine, VOCs, disinfection byproducts (THMs and HAAs), and many herbicides and pesticides from every tap in the home.

Carbon is not an iron, hardness, or fluoride filter. If your water test shows iron above 0.3 ppm, hardness, or high TDS, those need a different system (an iron filter, a softener, or reverse osmosis) ahead of or instead of carbon.

No, and you should not rely on one for that. A whole-house carbon tank filter removes chemicals (chlorine, chloramine, VOCs, taste, and odor), not microorganisms. Giardia and Cryptosporidium cysts, along with bacteria and viruses, pass straight through a standard carbon bed.

If your well tests positive for bacteria or your goal is protozoan cysts, the right tool is UV disinfection (for bacteria and viruses) or an absolute 1-micron rated cyst filter or reverse osmosis (for Giardia and Cryptosporidium). Tell Aidan what your test shows and he will point you to the correct system instead of overselling carbon.

On typical city water the Centaur carbon bed lasts about 5 to 7 years before it needs to be re-bedded. There are no cartridges to swap monthly and no chemicals to add.

Heavy chlorine or chloramine, high water usage, or well water with sulfur shortens that interval. The 20-inch Big Blue cartridge kit is the exception: its cartridge is changed every 3 to 6 months.

Not noticeably when it is sized correctly. The tank systems are designed so water passes through the carbon bed with only a 2 to 3 psi drop at normal household flow. That is why we size by bathrooms and peak demand: a 1.5 cu ft tank handles 1 to 3 baths and a 2.5 cu ft tank handles 2 to 4, with headroom so showers and appliances running at once do not starve.

The 20-inch Big Blue cartridge kit is the one to watch: a fresh cartridge drops about 5 psi at 5 GPM, and that climbs as the cartridge loads with sediment, so it is best on smaller homes and changed every 3 to 6 months. If pressure is already marginal at your house, tell Aidan and he will size up the tank so you never feel it.

A whole-house catalytic carbon filter gives meaningful reduction of PFAS, herbicides, and pesticides, but it is not an NSF/ANSI 53 certified PFAS-removal system. For a guaranteed PFAS result, use a dedicated PFAS system or a point-of-use reverse osmosis unit at the kitchen tap downstream of the carbon.

If PFAS is your primary concern, tell Aidan and he will point you to the right certified system instead of overselling carbon.

They solve different problems. A softener removes hardness (scale, spots, dry skin); a carbon filter removes chlorine, chloramine, taste, and odor. Many city-water homes run both: softener first, then carbon as the final polish.

If you only have one problem, you only need one system. Send Aidan your water report and he will tell you whether you need carbon, a softener, or both.