Whole-house water filter comparison chart

Every system we track, side by side. Click any column to sort by it. Covers 12 systems from APEC, Aquasana, Express Water, Kind Water, Pelican (Pentair), SoftPro, SpringWell, iSpring.

Whole-house water filters, sorted by Guide score (click headers to re-sort)
Model	Score	Flow	Capacity	Media	Certifications	Price tier	Buy
SpringWell CF1 Whole House Water Filter	9.2	9 GPM	1.0M gal	Catalytic carbon + KDF	NSF 42/53 components	Price tier: Mid-range, ~$600–$1,300 ~$1,144–$1,160	Check price of the SpringWell CF1 Whole House Water Filter on Amazon
Aquasana HealthShield Whole House Water Filter	9.0	6 GPM	0.17M gal	GAC blend + smart monitor	WQA: NSF/ANSI 53 + 401	Price tier: Premium, ~$1,300–$2,200 ~$2,099	Check price of the Aquasana HealthShield Whole House Water Filter on Amazon
SpringWell CF4 Whole House Water Filter	8.8	12 GPM	1.0M gal	Catalytic carbon + KDF	NSF 42/53 components	Price not verified Check price	Check price of the SpringWell CF4 Whole House Water Filter on Amazon
Aquasana Rhino EQ-1000 Whole House Water Filter	8.6	7 GPM	1.0M gal	Carbon + KDF, dual tank	NSF/ANSI 42 certified	Price tier: Mid-range, ~$600–$1,300 ~$999–$1,998	Check price of the Aquasana Rhino EQ-1000 Whole House Water Filter on Amazon
Kind Water E-1000 Whole House Water Filter	8.5	15 GPM	0.10M gal	Carbon block cartridges	NSF 61/372 components	Price tier: Mid-range, ~$600–$1,300 ~$770–$976	Check price of the Kind Water E-1000 Whole House Water Filter on Amazon
iSpring WGB32B-KDS 3-Stage Whole House Water Filter	8.4	15 GPM	0.25M gal	Anti-scale + KDF compound	Meets NSF/ANSI standards	Price tier: Mid-range, ~$600–$1,300 ~$633–$690	Check price of the iSpring WGB32B-KDS 3-Stage Whole House Water Filter on Amazon
SoftPro Chlorine+ Fluoride SUPER Filter	8.4	10 GPM	1.0M gal	Catalytic carbon + bone char	Catalytic carbon + bone char	Price tier: Mid-range, ~$600–$1,300 ~$1,267	Check price of the SoftPro Chlorine+ Fluoride SUPER Filter on Amazon
Pelican PSE2000 Filter + Salt-Free Conditioner	8.3	15 GPM	1.3M gal	Carbon + salt-free conditioner	Third-party scale testing	Price tier: Flagship, over ~$2,200 ~$2,599–$3,099	Check price of the Pelican PSE2000 Filter + Salt-Free Conditioner on Amazon
iSpring WGB32B 3-Stage Whole House Water Filter	8.2	15 GPM	0.10M gal	3-stage Big Blue	Meets NSF/ANSI standards	Price tier: Budget, under ~$600 ~$420–$517	Check price of the iSpring WGB32B 3-Stage Whole House Water Filter on Amazon
SpringWell LCR Whole House Lead & Cyst Filter	8.2	8 GPM	0.10M gal	Carbon block, lead + cyst	NSF/ANSI 53 components	Price tier: Premium, ~$1,300–$2,200 ~$1,544	Check price of the SpringWell LCR Whole House Lead & Cyst Filter on Amazon
Express Water Heavy Metal 3-Stage Whole House Water Filter	8.1	15 GPM	0.10M gal	KDF + anti-scale + carbon	NSF certified filters	Price tier: Budget, under ~$600 ~$548–$550	Check price of the Express Water Heavy Metal 3-Stage Whole House Water Filter on Amazon
APEC CB3-SED-KDF-CAB20-BB Whole House Water Filter	8.0	12 GPM	0.10M gal	Sediment + KDF85 + carbon	Standard Big Blue housings	Price not verified Check price	Check price of the APEC CB3-SED-KDF-CAB20-BB Whole House Water Filter on Amazon

Flow rates and capacities are manufacturer ratings. Prices are typical US street prices as of October 2026 and change often.

Flow and value at a glance

Rated service flow by systemGallons per minute, manufacturer ratings. Size for your peak demand, not the average.

E-1000 15 GPM Heavy Metal 3-Stage 15 GPM PSE2000 15 GPM WGB32B 15 GPM WGB32B-KDS 15 GPM CB3 Big Blue 12 GPM CF4 12 GPM Chlorine+ Fluoride 10 GPM CF1 9 GPM LCR 8 GPM Rhino EQ-1000 7 GPM HealthShield 6 GPM

Most homes need 8–12 GPM at peak (showers + dishwasher + laundry). Use the flow-rate sizer to match your bathrooms.

Guide score vs. upfront priceEach dot is one system. Up and to the right is better — but the sticker price isn't the whole story.

$0$800$1,600$2,400$3,20078910CF1 HealthShield E-1000 WGB32B PSE2000

Guide score (out of 10)

Cartridge systems look cheap until you add yearly filter packs. Run the 5-year cost calculator before deciding.

Highest-rated systems

#1 · Top rated

SpringWell CF1 Whole House Water Filter

9.2

9 GPM
1,000,000 gal
NSF 42/53 components
City water

Best overall for city water — the set-and-forget tank system

One-million-gallon media capacity means a decade between main media changes
Spec sheet names chlorine, chloramine and PFAS/PFOA/PFOS specifically
Lifetime warranty on tank and valves plus a 6-month money-back guarantee

Not a certified whole system — NSF marks apply to components, not the assembled unit

~$1,144–$1,160 · today's price on Amazon

Check price on Amazon Read the full review

#2 · Top rated

Aquasana HealthShield Whole House Water Filter

9.0

6 GPM
165,000 gal
WQA: NSF/ANSI 53 + 401
City water

Best certified PFAS reduction — the only whole-house system WQA-certified to NSF/ANSI 53 for PFAS

First whole-house system certified to reduce PFAS and VOCs from every tap
WQA certification to NSF/ANSI 53 and 401 — independent, whole-system, not component-level
Smart Flow Monitor tracks usage and remaining capacity on a color touchscreen

Highest upfront price in our guide at about $2,099

~$2,099 · today's price on Amazon

Check price on Amazon Read the full review

#3 · Top rated

SpringWell CF4 Whole House Water Filter

8.8

12 GPM
1,000,000 gal
NSF 42/53 components
City water

Best for larger homes — the CF1's formula at 12 GPM for 4–6 bathrooms

Same catalytic-carbon + KDF media and lifetime warranty as the CF1
12 GPM service flow handles 4–6 bathroom homes without pressure sag
One-million-gallon capacity with minimal maintenance

Priced above the CF1 for the same media — you pay for the bigger tank

check price on Amazon

Check price on Amazon Read the full review

#4 · Top rated

Aquasana Rhino EQ-1000 Whole House Water Filter

8.6

7 GPM
1,000,000 gal
NSF/ANSI 42 certified
City water

Best certified chlorine reduction — NSF/ANSI 42 tested to 97% for a million gallons

Independently certified to NSF/ANSI 42 for 97% chlorine reduction
Million-gallon dual-tank capacity with upflow design that resists clogging
Optional salt-free conditioner and UV add-ons from the same maker

Pre/post filters need swapping every 2–6 months (~$120/yr) — the busiest maintenance schedule here

~$999–$1,998 · today's price on Amazon

Check price on Amazon Read the full review

#5 · Top rated

Kind Water E-1000 Whole House Water Filter

8.5

15 GPM
100,000 gal
NSF 61/372 components

Best for DIY install — wall-mount cartridges, no tank, take it when you move

15 GPM flow covers 1–6 bathrooms — the highest flow per dollar here
Wall-mount cartridge design: only 2 plumbing connections, zero floor space
Washable pleated sediment pre-filter cuts replacement costs

Cartridge media costs more over time than million-gallon tank media

~$770–$976 · today's price on Amazon

Check price on Amazon Read the full review

#6 · Top rated

iSpring WGB32B-KDS 3-Stage Whole House Water Filter

8.4

15 GPM
250,000 gal
Meets NSF/ANSI standards

Best budget pick for hard water — anti-scale plus heavy-metal reduction

Patented anti-scale media protects pipes and appliances without salt
Targets lead, mercury, chloramine and hydrogen sulfide — broader than the base WGB32B
250,000-gallon capacity stretches cartridge changes further

Costs ~50% more than the base WGB32B — only worth it if you need scale/heavy-metal help

~$633–$690 · today's price on Amazon

Check price on Amazon Read the full review

How to read this chart

Flow is the manufacturer's rated service flow in gallons per minute. Size for peak demand, not the average — our flow-rate sizer does that math for you.Capacity is how many gallons the media treats before replacement: tank systems run 500,000–1,000,000+ gallons, cartridge systems 100,000–250,000.Certifications are the trust layer: whole-system NSF/ANSI certification beats component-level marks, which beats maker claims. OurPFAS guide explains which standards matter for "forever chemicals".

FAQ

Which whole-house water filter is the best in 2026?

By our research-based score, the SpringWell CF1 Whole House Water Filter currently ranks highest (9.2/10). The best system for you depends on your water source (city vs. well), flow needs, and which contaminants matter most — so sort the table by the spec that matters for your home.

How do I size a whole-house water filter?

Size by service flow rate (GPM), not by tank size. Most homes need 8–12 GPM at peak demand — count your bathrooms and simultaneous water users. Our flow-rate sizer does the math in about a minute.

What do NSF/ANSI certifications mean on a water filter?

NSF/ANSI 42 covers taste and odor (chlorine), 53 covers health-effect contaminants (lead, PFAS, VOCs), 401 covers emerging compounds like pharmaceuticals, and 58 is for reverse osmosis. Whole-system certification is stronger than component-level certification — check which one a maker actually claims.