Compare Cordless Vacuum
Miele Triflex HX2 Cordless Vacuum scores higher on safety - here's why.
R3 scored the Miele Triflex HX2 Cordless Vacuum 8.2/10 and the Dyson V15 Detect Cordless Vacuum 7.6/10 on the same cordless vacuum scoring system, weighing safety, efficacy, and usability. The Miele Triflex HX2 Cordless Vacuum comes out ahead, led by its safety score (8.3/10 vs 7.2/10).
The most important dimensions, side by side.
See which one actually scores higher — and why
Free account unlocks full safety scores, spec-by-spec breakdown, and the R3 verdict on Miele Triflex HX2 Cordless Vacuum vs Dyson V15 Detect Cordless Vacuum.
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Free account unlocks all safety scores, complete spec comparison, scoring rationale, and the R3 verdict on which one to buy.
Everything you need to make the call - who each one is for, and who should skip it.
Go for it if you...
Battery safety and longevity matter to you — the Miele's TÜV-certified, user-replaceable battery means a degraded battery gets a $849 swap instead of a $849+ vacuum replacement.
You want the only vacuum in the category that tells you what the filter is made of: Miele discloses 'non-toxic synthetic fiber,' avoiding fiberglass filter media that all other brands leave undisclosed.
Your cleaning is primarily on hard floors and low-pile carpet where 145Pa suction is fully adequate and the filtration and battery safety advantages justify the choice.
You want whole-machine sealed HEPA 14 filtration — not just a HEPA filter — and want independent verification that no dirty air bypasses the filter at chassis seal points.
You're considering the Gen5detect but find it hard to justify $380 more for 10 extra minutes of runtime and marginally higher filtration capture (99.99% vs 99.97%).
Your home is under 2,000 sq ft and 40 minutes of runtime covers your cleaning session comfortably.
You want the largest dustbin in the category (0.77L) with a real-time particle sensor that confirms cleaning effectiveness as you go.
The main thing to know
The Miele Triflex HX2 earns its place at the top of this category on two specific safety advantages: a TÜV-certified user-replaceable battery — unique in the category — and Miele's disclosure of non-toxic synthetic filter material, which no competitor publishes. The honest trade: lower suction (145Pa vs Dyson's 185–262Pa), shorter single-battery runtime (35 min), and a smaller dustbin (0.45L). For families buying on a 5-year horizon who value battery replaceability, material transparency, and the strongest independent battery certification available, this is the category's top safety pick.
The V15 Detect's 7.61 score is driven almost entirely by safety (79.8% weight). It delivers the same sealed-HEPA 14 profile as the $1,050 Gen5detect at $380 — the core safety spec is identical. The material transparency gaps (filter chemistry, body BPA status) are real but category-wide. At $380 with the lowest annual TCO in the Dyson lineup (~$101/year), this is the best safety-to-value ratio in the cordless vacuum category.
Skip this if you...
You have thick-pile carpet and need high suction power — 145Pa is the lowest measured suction among sealed-HEPA vacuums in this set, and the Dyson V15 Detect (230Pa) is a better choice for carpet-heavy homes.
You need 50–60 minutes of continuous runtime without pausing to swap batteries — the Shark Stratos (60 min) and Samsung Bespoke Jet (60 min) deliver this without the battery purchase add-on.
You need a large dustbin for pet hair — the 0.45L capacity is the smallest in the category and will require more frequent emptying than the Dyson options (0.77L).
Your home is over 2,000 sq ft and you need 50–60 minutes of continuous runtime without a mid-session recharge.
You want a user-replaceable battery for long-term ownership — the Miele Triflex HX2 offers field-swappable battery packs the V15 does not.
You need the vacuum to self-empty into a dock — the Samsung Bespoke Jet's Clean Station does this; the V15 Detect does not.
Neither of these quite what you're looking for?
I've reviewed all Cordless Vacuum options at every price pointEvery Cordless Vacuum in our database is scored using R3's deterministic scoring system - the same inputs always produce the same score. For this comparison, we evaluated Miele and Dyson across 3 independent criteria: Safety (80%), Efficacy (13%), Usability (7%). No sponsored rankings. No paid placements.
Straight answers - no sponsored content, no filler.
I'd start with Miele Miele Triflex HX2 Cordless Vacuum - it scored 8.2/10 overall in our scoring system. Safety is our top-weighted scoring pillar, followed by efficacy, and usability. Check which pillar matters most to your family and compare those specific scores.
R3 uses a deterministic scoring system - the same inputs always produce the same score. We evaluate each Cordless Vacuum across Safety, Efficacy, Usability using independently verified data. No sponsored rankings. No paid placements. Every score is fully reproducible.
Not necessarily. The overall score reflects how we weight those three pillars, but your priorities may differ. If you care most about safety, compare the safety scores directly. If budget drives your decision, the prices tell a clearer story. The "right" pick is the one that matches what matters most to your family.
Not the right match? Explore these alternatives in the same category.
