Product comparison · Whole House

US Water Systems Bodyguard vs Aquasure Fortitude Pro 600K

The US Water Systems Bodyguard scores 7.3 and ranks 4th of 62 in Whole House; the Aquasure Fortitude Pro 600K scores 5.3 and ranks 32nd of 62 in Whole House. The Bodyguard leads on warranty & support.

All 18 US Water Systems products
US Water Systems Bodyguard Whole House Water Filter

US Water Systems Bodyguard

$1,000 · 4th of 62 in Whole House

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  • Warranty & Support — 10 against 5
7.3
vs
5.3

Across everything we scored, US Water Systems Bodyguard sits 2.00 ahead — led by warranty & support.

Verdict

Bodyguard ahead · +2.00 (7.3 vs 5.3)

Pick the US Water Systems Bodyguard when

Warranty & support matters10vs5

Ease of installation matters8vs6

Contaminant reduction matters8vs6

Pick the Aquasure Fortitude Pro 600K when

Price matters$700vs$1,000

Scored 16 September 2026 from published specs and owner reviews. We don't buy or test units. How we score

Usability US Water Systems Bodyguard and Aquasure Fortitude Pro 600K, scored 0 to 10

  • Contaminant ReductionUS Water Systems Bodyguard: 8 (higher)Aquasure Fortitude Pro 600K: 6

    US Water Systems Bodyguard

    • Adding KDF-55 ahead of the carbon extends bed life and suppresses bacterial growth in the tank.

    Aquasure Fortitude Pro 600K

    • Within that envelope the media does what carbon and KDF55 do well: Aquasure's support staff quote 95 percent chlorine, 80 to 95 percent chloramine and 80 percent heavy metals, figures given in correspondence rather than from a test report.
  • Warranty & SupportUS Water Systems Bodyguard: 10 (higher)Aquasure Fortitude Pro 600K: 5

    US Water Systems Bodyguard: Lifetime · Aquasure Fortitude Pro 600K: 5 Years.

  • Flow RateUS Water Systems Bodyguard: 6 (higher)Aquasure Fortitude Pro 600K: 5

    US Water Systems Bodyguard

    • The 1-inch porting is the meaningful engineering claim here and the peak flow figure of 25 GPM reflects it.

    Aquasure Fortitude Pro 600K

    Nothing recorded.

  • Build QualityUS Water Systems Bodyguard: 7 (higher)Aquasure Fortitude Pro 600K: 6

    US Water Systems Bodyguard

    Nothing recorded.

    Aquasure Fortitude Pro 600K

    • Aquasure states directly that the Fortitude Pro is built from NSF certified components but that the system itself has never gone through NSF certification and that no spec sheet exists as a result.
  • Ease of InstallationUS Water Systems Bodyguard: 8 (higher)Aquasure Fortitude Pro 600K: 6

Same score

  • Certification CoverageUS Water Systems Bodyguard: 2Aquasure Fortitude Pro 600K: 2

    only the US Water Systems Bodyguard: NSF/ANSI 61; only the Aquasure Fortitude Pro 600K: Not certified.

    US Water Systems Bodyguard

    • Certification is limited to components meeting NSF/ANSI 61 and 42, which covers materials safety and aesthetic effects; there is no system-level health-effects certification under 53, and the company does not claim one.

    Aquasure Fortitude Pro 600K

    • That is an unusually candid answer and it is also the reason the certification score here is what it is.
  • Filter LifeUS Water Systems Bodyguard: 5Aquasure Fortitude Pro 600K: 5

    US Water Systems Bodyguard

    • Media replacement is a rebed rather than a cartridge swap, which is cheaper over time but a longer job.

    Aquasure Fortitude Pro 600K

    • Six years of media life against one tank is a genuinely low cost of ownership, and unlike the cartridge Fortitude systems there is no six-month replacement to budget for.
    • The system requires a manual backwash and rinse every seven to ten days, which is real maintenance that the marketing does not foreground.
  • ValueUS Water Systems Bodyguard: 5Aquasure Fortitude Pro 600K: 5

Social score about the US Water Systems Bodyguard and the Aquasure Fortitude Pro 600K

  • RedditUS Water Systems Bodyguard: 7 (higher)Aquasure Fortitude Pro 600K: 5

    The US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers the whole brand.

    US Water Systems Bodyguard

    Read the full summary
    • Brand-level. r/WaterTreatment and r/Plumbing discuss US Water Systems regularly and the balance is positive: the company is described as one of the stronger direct-to-consumer builders, with knowledgeable phone support and equipment that solves the problem.
    • The consistent counterweight is price, and forum sizing advice routinely disputes the flow figures marketed for a given tank diameter.

    Aquasure Fortitude Pro 600K

    Read the full summary
    • Brand-level.
    • Aquasure comes up regularly in r/WaterTreatment, mostly on the softeners.
    • Owners of the whole-house filtration report pressure drops when the pre-filter is not changed on schedule, and one long-form owner account describes running the weekly backwash cycle without complaint.
    • Nothing specific to the 600,000 gallon tank exists.
  • GoogleUS Water Systems Bodyguard: 8 (higher)Aquasure Fortitude Pro 600K: 6

    The US Water Systems Bodyguard reading covers its product line; the Aquasure Fortitude Pro 600K reading covers the whole brand.

    US Water Systems Bodyguard

    Read the full summary
    • Product-line.
    • Water Filter Guru lab-tested the fluoride variant built on this chassis and scored it 9.14 overall, with fluoride eliminated and chlorine reduced completely.
    • Its performance-certification score was 6.00, which matches our own reading that the certification here is component-level rather than system-level.

    Aquasure Fortitude Pro 600K

    Read the full summary
    • Brand-level.
    • Modernize and Quality Water Lab cover Aquasure through the Harmony softeners.
    • Dominick Plumbing notes the absence of NSF certification across the brand.
    • No third-party review of the Fortitude Pro tanks exists.
  • YouTubeUS Water Systems Bodyguard: 8 (higher)Aquasure Fortitude Pro 600K: 7

    The US Water Systems Bodyguard reading covers its product line; the Aquasure Fortitude Pro 600K reading covers its product line.

    US Water Systems Bodyguard

    Read the full summary
    • Product-line.
    • BOS Water, an independent channel of roughly 20,000 subscribers, installed and lab-tested a pair of Bodyguard tanks and reported high contaminant reduction, installation no harder than a softener, and media replacement of roughly $160 to $320 every million gallons or five years.
    • The tested unit was the backwashing Plus rather than this model, so the finding sits at the line.
    • BOS Water monetises through affiliate links on the products it tests.

    Aquasure Fortitude Pro 600K

    Read the full summary
    • Product-line.
    • NKP Home Improvement's step-by-step install at roughly 94,000 views fits a Fortitude Pro pre-filter and carbon tank alongside a 64,000 grain Harmony, and Tommy Runkel's two-year follow-up at 2,600 views covers the Fortitude V2 pre-filter on the same chassis.
    • A dedicated Fortitude V2 Triple Purpose review also exists and carries an Amazon affiliate tag, which is disclosed rather than disqualifying.
    • That is the Fortitude Pro on camera rather than adjacent to the subject, which is what moves this row off brand scope.
    • Neither video names a capacity.
    • Brand-level coverage is the Harmony softeners: DIY Homestead Projects at roughly 115,000 views, NKP Home Improvement at roughly 94,000, geminidrums at 15,000 on the fine mesh and IrixGuy's two-year owner review at 13,000.
  • AmazonUS Water Systems Bodyguard: 7 (higher)Aquasure Fortitude Pro 600K: 5

    The US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers the whole brand.

    US Water Systems Bodyguard

    Read the full summary
    • Brand-level.
    • No system of this type is sold on Amazon.
    • Amazon's brand panel reads 4.5 from over 300 ratings, the same figure printed on every US Water listing and collected almost entirely on replacement cartridges and sediment filters, so it describes the consumables business rather than this product.

    Aquasure Fortitude Pro 600K

    Read the full summary
    • Brand-level.
    • The Fortitude Pro tank listing carries no featured offer and no customer-review figure, so there is no product or line pool for the media tanks.
    • Amazon publishes a brand-insights panel for Aquasure - 4.5 from 5,000-plus customer ratings with 10,000-plus orders in the trailing three months - and that is the brand-scope figure this row falls back to.
    • That storefront is softener-dominated, and a point-of-entry media tank is the furthest hardware in the catalogue from what those ratings were collected on.
  • Owner reviewsUS Water Systems Bodyguard: 6Aquasure Fortitude Pro 600K: 9 (higher)

    The US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers its product line.

    US Water Systems Bodyguard

    Read the full summary
    • Trustpilot rates the company 4.2 from 1,033 reviews, 73 per cent five-star and 9 per cent one-star, though only nine of them landed in the past twelve months and Trustpilot records no history of the company soliciting reviews.
    • SmartCustomer rates the same company 3.5 from 20.
    • The two are recorded separately rather than averaged.
    • Both pools praise technical support and criticise shipping speed and refund handling.
    • The only Bodyguard-specific account in either pool is negative: an owner who bought it for elevated trihalomethanes reports that it made their skin worse and that the unit is now disconnected in the garage.

    Aquasure Fortitude Pro 600K

    Read the full summary
    • Home Depot holds native pools on the two larger Fortitude Pro tanks: 4.9 of 5 from 16 reviews on the million-gallon AS-FP1000 and 4.6 from 21 on the 1.5 million-gallon AS-FP1500.
    • Both counts are small but above the ten-review floor, and both sit above the 4.5 the Harmony softeners hold at the same retailer, which makes the Fortitude Pro the best-reviewed hardware Aquasure sells there.
    • This 600,000 gallon tank is listed at Home Depot but returned no rating of its own, so the figure describes the line.
    • The 106 reviews shown on Aquasure's own product page run through Judge.me on aquasureusa.com and are the manufacturer's widget, so they are not scored.

US Water Systems Bodyguard vs Aquasure Fortitude Pro 600K: pros and cons

US Water Systems Bodyguard

Overall score 7.3

Strengths

  • Catalytic carbon handles chloraminenot just free chlorine
  • KDF-55 stage extends bed life and inhibits bacterial growth
  • Full 1" or larger porting25 GPM peak flow
  • No electricitydrain line or wastewater on this model
  • 5-micron Magna prefilter included
  • Three tank sizes for household size

Drawbacks

  • Media rebed is a longer job than a cartridge change
  • No sediment backwashso heavy sediment needs pre-treatment
  • Not a softener and does not reduce hardness
  • Manufacturer-stated flow figures are peaknot sustained
  • Component-level NSF/ANSI 61 and 42 onlyno system health-effects certification

Aquasure Fortitude Pro 600K

Overall score 5.3

Strengths

  • Six years or 600,000 gallons of media before the tank needs attention
  • KDF85 upgrade available under a separate SKU for hydrogen sulphide odour
  • Aquasure quotes 95 percent chlorine and 80 to 95 percent chloramine reduction
  • Both 3/4 inch and 1 inch NPT connections available
  • The Fortitude Pro tanks are the best-rated Aquasure hardware at Home Depot, above the softeners

Drawbacks

  • 9 GPM rated flow is genuinely limiting: this tank cannot serve more than two bathrooms
  • Requires a manual backwash and rinse every seven to ten days
  • Aquasure confirms the system holds no NSF certification and that no spec sheet exists
  • Reduction percentages come from support correspondencenot from a published test report
  • No published tank dimensions
  • Backwashing consumes water and requires a drain line

US Water Systems Bodyguard vs Aquasure Fortitude Pro 600K: the numbers

Price, scores and rank, then only the specs that differ. Green marks the side with more.

7.3
Overall
Usability6.1
Social7.2

4th of 55 in Whole House

5.3
Overall
Usability4.8
Social6.4

28th of 55 in Whole House

Filtration

BothGranular Activated CarbonKDF

US Water SystemsCatalytic Carbon
AquasureNothing more
Removes

BothChloramineChlorineSedimentTaste and Odor

US Water SystemsNothing more
Aquasure MoreHeavy metalsPFASScaleLeadVOCs
  • Certifications
    US Water Systems MoreNSF/ANSI 61
    AquasureNot certified
  • Warranty
    US Water Systems MoreLifetime
    Aquasure5 Years
  • Connection
    US Water Systems1 in
    Aquasure1 in, 3/4 in
  • Housing
    US Water SystemsComposite
    AquasureNot listed
  • Weight
    US Water Systems46 lb (10 GPM configuration)
    AquasureNot listed
  • Made in
    US Water SystemsUSA
    AquasureNot listed

Same on both

  • 5-10 GPMFlow rate
  • 6-12 monthsFilter life

We earn a commission if you buy through these links. It never changes a score.

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US Water Systems Bodyguard vs Aquasure Fortitude Pro 600K: common questions

Is the US Water Systems Bodyguard better than the Aquasure Fortitude Pro 600K?

On our scores, the US Water Systems Bodyguard is ahead, 7.3 against 5.3. The US Water Systems Bodyguard leads on warranty & support (10 against 5), contaminant reduction (8 against 6), flow rate (6 against 5), ease of installation (8 against 6) and build quality (7 against 6).

Which is cheaper, the US Water Systems Bodyguard or the Aquasure Fortitude Pro 600K?

The Aquasure Fortitude Pro 600K, at $700 against $1,000: $300 less.

Which has more certifications, the US Water Systems Bodyguard or the Aquasure Fortitude Pro 600K?

The US Water Systems Bodyguard. The US Water Systems Bodyguard lists NSF/ANSI 61; the Aquasure Fortitude Pro 600K lists none.

Which removes more contaminants, the US Water Systems Bodyguard or the Aquasure Fortitude Pro 600K?

The US Water Systems Bodyguard lists 4 and the Aquasure Fortitude Pro 600K lists 9, with 4 on both lists. Only the Aquasure Fortitude Pro 600K lists Heavy metals, PFAS, Scale, Lead and VOCs.

Which has the longer warranty, the US Water Systems Bodyguard or the Aquasure Fortitude Pro 600K?

The US Water Systems Bodyguard: Lifetime, against 5 Years.

What do owners say about the US Water Systems Bodyguard and the Aquasure Fortitude Pro 600K?

Across 5 independent sources scored for both, the US Water Systems Bodyguard is ahead on Reddit, Google, YouTube and Amazon; the Aquasure Fortitude Pro 600K is ahead on Owner reviews.

More whole house comparisons

The full comparison of these two brands.

Scores calculated 16 September 2026 · Products excluded where fewer than two independent sources cover them ·  · How we score

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