Product comparison · Whole House
US Water Systems Bodyguard vs Aquasure Fortitude Pro 600K
The US Water Systems Bodyguard scores 6.7 and ranks 4th of 62 in Whole House; the Aquasure Fortitude Pro 600K scores 5.6 and ranks 32nd of 62 in Whole House. The Bodyguard leads on warranty & support.
All 18 US Water Systems products 
US Water Systems Bodyguard
$1,000 · 4th of 62 in Whole House
- Warranty & Support — 10 against 5
6.7
5.6
Across everything we scored, US Water Systems Bodyguard sits 1.04 ahead — led by warranty & support.
Verdict
Bodyguard ahead · +1.04 (6.7 vs 5.6)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
Where the US Water Systems Bodyguard and Aquasure Fortitude Pro 600K differ
Scores on a 0–10 scale. Each row is one criterion, biggest difference first.
Warranty & Support
+5 US Water SystemsUS Water Systems Bodyguard: Lifetime · Aquasure Fortitude Pro 600K: 5 Years.
Flow Rate
+1 US Water SystemsBuild Quality
+1 US Water SystemsEase of Installation
+2 US Water SystemsCertification Coverage
tiedonly the US Water Systems Bodyguard: NSF/ANSI 61; only the Aquasure Fortitude Pro 600K: Not certified.
Filter Life
tiedValue
tiedWhat US Water Systems Bodyguard and Aquasure Fortitude Pro 600K owners report
Independent sources, scored for each model. Bodyguard on 5 of five, Fortitude Pro 600K on 5.
The US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers the whole brand.
What they say
US Water Systems Bodyguard
- 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
- 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.
The US Water Systems Bodyguard reading covers its product line; the Aquasure Fortitude Pro 600K reading covers the whole brand.
What they say
US Water Systems Bodyguard
- 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
- 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.
YouTube
+1 US Water SystemsThe US Water Systems Bodyguard reading covers its product line; the Aquasure Fortitude Pro 600K reading covers its product line.
What they say
US Water Systems Bodyguard
- 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
- 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.
Amazon
+2 US Water SystemsThe US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers the whole brand.
What they say
US Water Systems Bodyguard
- 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
- 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 reviews
+3 AquasureThe US Water Systems Bodyguard reading covers the whole brand; the Aquasure Fortitude Pro 600K reading covers its product line.
What they say
US Water Systems Bodyguard
- 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
- 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
What each one does well, and where it falls short.
Pros 6
Catalytic carbon handles chloramine, not just free chlorine
KDF-55 stage extends bed life and inhibits bacterial growth
Full 1" or larger porting, 25 GPM peak flow
No electricity, drain line or wastewater on this model
5-micron Magna prefilter included
Three tank sizes for household size
Cons 5
Component-level NSF/ANSI 61 and 42 only, no system health-effects certification
Media rebed is a longer job than a cartridge change
No sediment backwash, so heavy sediment needs pre-treatment
Not a softener and does not reduce hardness
Manufacturer-stated flow figures are peak, not sustained
Pros 5
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
Cons 6
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 correspondence, not 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.
6.7
4th of 55 in Whole House
5.6
28th of 55 in Whole House
Filtration
Both Granular Activated Carbon, KDF
US Water Systems Bodyguard
+ Catalytic Carbon
Aquasure Fortitude Pro 600K
Nothing more
Removes
Both Chloramine, Chlorine, Sediment, Taste and Odor
US Water Systems Bodyguard
Nothing more
Aquasure Fortitude Pro 600KMore
+ Heavy metals, PFAS, Scale, Lead, VOCs
SpecUS Water Systems BodyguardAquasure Fortitude Pro 600K
CertificationsNSF/ANSI 61Not certified
WarrantyLifetime5 Years
Connection1 in1 in, 3/4 in
HousingCompositeNot listed
Weight46 lb (10 GPM configuration)Not listed
Made inUSANot listed
Same on both
- Flow rate 5-10 GPM
- Filter life 6-12 months
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What’s different
- Flow rate: 10-15 GPM, not 5-10 GPM
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What’s different
- Flow rate: 10-15 GPM, not 5-10 GPM
- Filtration: adds Carbon Block, Sediment
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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, 6.7 against 5.6. 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