Best Whole-House Water Filter for Chloramine

Short answer: if you want a whole-house chloramine number you can read on a data sheet, that system is the Aquasana Rhino Chloramines WH-1011. The sheet reports 83% overall chloramine reduction and 97.4% overall free-chlorine reduction in a test Aquasana says followed NSF/ANSI 42. The tank's WQA mark is materials safety, not a contaminant-reduction certification. If you want a manufacturer guarantee instead of that percentage, SpringWell's CF series says its carbon reduces chlorine and chloramine below minimum detection for 6 years or 1 million gallons. We did not find an NSF, WQA or IAPMO certificate on SpringWell's page.

Published October 20, 2026. Sources are Aquasana's WH-1011 product page and performance data sheet, SpringWell's whole-house filter page, and the Amazon listings linked below, read that day. Aquasana showed the WH-1011 in stock. SpringWell showed the CF series in stock. We have not installed either system, and we don't run a lab. This is not medical advice.

Chloramine is not the chlorine line on a filter

EPA describes chloramines as disinfectants formed when ammonia is added to chlorine. They last longer in the pipes than chlorine alone. Your consumer confidence report is the document that says which one your utility uses. See how to read a water quality report.

A carbon filter can reduce chlorine and still have nothing to say about chloramine. Catalytic carbon is the media both of these whole-house systems point at when the report says chloramine. If the page only says "chlorine," do not upgrade that word.

One kitchen faucet is a different purchase. The under-sink filter with a published chloramine figure is the Aquasana AQ-6200. A showerhead is a third purchase. NSF/ANSI 177 is about free chlorine, not chloramine.

Aquasana Rhino Chloramines (WH-1011)

From Aquasana's product page and the WH-1011 performance data sheet, read October 20, 2026:

• Model WH-1011, replacement WH-1011R
• Rated capacity: 1,000,000 gallons or up to 10 years
• Rated flow: 7.0 gpm. Aquasana's spec chart also lists a peak flow of 10.3 gpm, and says the reduction test used the rated flow
• Operating range on the sheet: 20–100 psi, 40–90°F
• Size on the product page: 57 inches high, 11 inches in diameter
• Media: Aquasana's FAQ says both tanks are 100% catalytic carbon
• Power and drain: the page says no electricity, no drain line, and no backflush
• Maintenance on the product page: 20-inch pre-filter every 2 months, post-filter every 6 months. A low-maintenance pre-filter is sold as a 6-month upgrade
• Sizing in the FAQ: homes with up to 2.5 bathrooms and 4 people. Aquasana sells a separate Chloramines Max Flow (WH-1021) for larger homes. This page is about the WH-1011 sheet we read
• Warranty on the page: 10-year limited, plus a 90-day satisfaction guarantee
• Price on the page with nothing added: $2,798. Add-on UV, a salt-free conditioner, and a bypass kit were listed separately
• In stock that day

What the sheet actually measured. It says the system was independently tested according to NSF/ANSI 42 for the substances listed. The summary line is 83% overall chloramine reduction (influent challenge 3.0 mg/L ± 10%) and 97.4% overall free available chlorine (influent challenge 2.02 mg/L ± 10%). Chloramine reduction in the sample table starts at 99.7% and is 75.5% at 1,000,000 gallons. Chlorine at full capacity in that table is 92.82%. "Up to 83%" on the product page is Aquasana's wording for the overall chloramine figure, not a promise that every gallon hits 83%.

What the certificate is, and is not. The sheet says the Rhino tank is tested and certified by WQA under NSF/ANSI/CAN 61 for materials safety only, and under CSA B483.1 for materials safety and structural integrity. The next sentence is: "Not certified for contaminant reductions by WQA." Independently tested to NSF/ANSI 42 is not the same sentence as "NSF certified" or "WQA certified for chloramine reduction."

The sheet also says all contaminants reduced by this filter are listed. The reduction table we read is chloramine and chlorine. The product page shows a longer contaminant list under Claryum language. We are not treating that longer list as this model's reduction claims.

Aquasana's FAQ says disinfection is recommended when the supply is not municipal water, and it points iron problems to a different filter. This is a city-water chloramine tank, not a well-water system and not a softener.

SpringWell CF series

SpringWell's whole-house page, read the same day, says the system removes chlorine and chloramine from city water with KDF, catalytic carbon and a sediment filter. The page also says it removes PFAS, PFOA and PFOS. That PFAS sentence is SpringWell's. We did not find an NSF, WQA or IAPMO listing on the page to go with it.

The performance language is a guarantee, not a percentage. SpringWell says its carbon reduces chlorine and chloramine below minimum detection levels for 6 years or 1 million gallons. Media life on the spec table is 10 years or 1,000,000 gallons. The sediment filter is every 6 to 9 months.

Sizes on the page:

• CF1: 1–3 bathrooms, 9 GPM, 1-inch connection, tank 9 × 48 inches (52 with the head)
• CF4: 4–6 bathrooms, 12 GPM, 1-inch, tank 10 × 54 inches (58 with the head)
• CF+: 7 or more bathrooms, 20 GPM, 1.5-inch, tank 13 × 54 inches (58 with the head)
• All three: 25–80 psi, 36–120°F

How SpringWell describes the stages: KDF (copper-zinc) for chlorine and heavy metals, catalytic carbon for chloramine and other organics, then a 5-micron sediment filter after the tank. The design is up-flow. The page we read does not list a power requirement or a backwash cycle for this carbon tank. It does say not to use the system where water is microbiologically unsafe.

On a private well, SpringWell's warranty text calls for pre-treatment if there is hydrogen sulfide, oil, copper over 1.30 mg/L, or iron and manganese. Carbon does not soften water. The longer SpringWell walkthrough is the beginners review.

SpringWell showed the system in stock and sells it direct. There is no Amazon button for it on this site. The link is not an affiliate link.

How to choose

Buy the WH-1011 if your report says chloramine, the home is in Aquasana's 2.5-bathroom / 4-person window, and you want the 83% overall figure with the end-of-life 75.5% line visible on a sheet. Budget the pre-filter every 2 months. The direct link above is not an affiliate link.

Buy the SpringWell CF if you want chloramine treatment at every tap, you need a size past 2.5 bathrooms, and you are buying the below-detection guarantee rather than a published percentage. Confirm the bathroom count against CF1, CF4 or CF+.

Buy the under-sink AQ-6200 if only the drinking faucet matters. Its sheet lists 91% chloramine reduction under NSF/ANSI 42, and WQA certifies that system to NSF/ANSI 42, 53 and 401 for the claims on its sheet. It does not treat the shower. Amazon showed the AQ-6200 in stock on October 20, 2026.

Buy the iSpring WGB32B only if you want a cartridge whole-house system from Amazon for sediment and chlorine, and you have read that this page is not calling it a chloramine filter. The listing title we opened leads with "Eliminates 99% Chlorine," plus sediment, taste and odor. Amazon showed 17 left in stock that day. The iron version of this cartridge family, the WGB32BM, says on its listing that it does not reduce TDS. Treat the WGB32B the same way: chlorine and sediment, not dissolved solids.

Skip both tanks if the goal is fluoride, nitrate or a large drop in TDS at the kitchen tap. That is reverse osmosis, at one faucet. Start with G3P800 vs RCC7. A whole-house carbon tank also does not replace a water test. The wider city-water roundup is the whole-house review and the city-water whole-house guide.

Frequently asked questions

What is the best whole-house water filter for chloramine?

The WH-1011 if you want a data sheet: 83% overall chloramine reduction, 75.5% at 1,000,000 gallons, in a test Aquasana says followed NSF/ANSI 42. The SpringWell CF series if you want the below-detection guarantee and a larger size, and you can accept that we found no certificate on the page.

Is the Rhino Chloramines NSF certified for chloramine?

Aquasana says it was independently tested to NSF/ANSI 42. The same sheet says the tank's WQA certification is NSF/ANSI/CAN 61 for materials safety only, and that WQA has not certified it for contaminant reduction.

Does a chlorine filter also remove chloramine?

Only if the sheet or the guarantee says chloramine. Chloramine is chlorine plus ammonia. A chlorine percentage does not answer it.

Will this remove fluoride or nitrate?

No. The WH-1011 sheet we read lists chloramine and chlorine. Fluoride and nitrate are reverse osmosis questions, at the drinking tap, not a reason to buy either of these tanks.

Related guides

• Best under-sink filter for chloramine
• SpringWell whole-house filter review
• Whole-house filters: SpringWell, iSpring, Waterdrop
• Best shower filter