Miele Duoflex Extra Vacuum Cleaner, HX1

Verdict

A premium, lightweight cordless stick with standout pet-hair and multi-surface cleaning plus genuinely useful SpeedLock ergonomics, but short real-world floor runtime, a small 0.3L bin, and brushroll hair-wrap make it best as a quick-grab/second vacuum unless you have a small space.

Pros

  • Ease of use ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 5.0
    Frequently described as one of the easiest cordless vacuums to live with due to low weight, simple controls, fast SpeedLock changes, and low-fuss filter cleaning.
  • Under-Furniture Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.9
    Low-profile, well-hinged floorhead reaches deep under furniture and along plinths without fuss.
  • Hard Floor — Fine Dust Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.8
    Excellent fine-dust pickup on hard floors, clearing flour-type debris in a single pass.
  • Upholstery / Above-Floor Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.8
    Compact Electrobrush’s added power pulls embedded pet hair from textured upholstery efficiently.
  • Build quality & durability ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.8
    Exceptionally robust build with premium materials and a solid, durable feel that inspires long-term confidence.
  • Convertible handheld design ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.8
  • Hair Pickup — Hard Floors ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.8
    Strong pet-hair pickup on hard floors, often drawing hair in from an inch or two away rather than requiring direct contact.
  • Pet-Ready Features ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.8
    Electro Compact upholstery head excels at removing pet hair, leaving sofas and fabric surfaces fur free.
  • Low-profile design ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.7
    Low-profile floorhead can lie very flat (around 2.5 inches tall), helping it reach under furniture and cabinets more easily than bulkier heads.
  • Hair Pickup — Carpets ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.7
    Carpet hair pickup is excellent with auto ramp-up on rugs/carpets, though a few hairs may remain right at the edges in tough environments.
  • Maneuverability & Handling ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.7
    Handling is frequently called comfortable and well balanced, with an agile swivel head that glides over mixed flooring and makes above-floor cleaning less tiring than many stick vacs.
  • Noise level ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.7
    Quieter than many cordless sticks in normal use, with reviewers measuring mid‑60 dB operation and higher‑70s dB on max.
  • Overall durability/longevity ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.7
    Multiple reviewers describe the Duoflex as premium and robust enough to last years, helped by metal components and generally strong confidence in Miele reliability.
  • Packaging quality ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.7
    Packaging and unboxing are praised for being tidy and low-waste, avoiding excessive plastic and complicated packing.
  • Suction & Airflow ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.7
    Cleaning power is widely praised, with strong suction and effective pickup across hard floors, carpets, and upholstery; boost adds extra punch but drains runtime quickly.
  • Versatility ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.7
    Versatile for whole-home touchups thanks to a multi-surface powered head and fast conversion to handheld for stairs, upholstery, cars, and dusting tasks.
  • Tool-change simplicity ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.6
    SpeedLock/locking connectors make swapping tools and converting configurations fast and low-effort; a few users note the fit can feel tight at first.
  • Assembly and Setup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.6
    Assembly is straightforward, with clear paper instructions and a simple process for connecting the tube, floorhead and wall mount.
  • Innovation compared to competitors ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.6
    SpeedLock connectors and the twist-to-clean filter feel like meaningful innovations that help this cordless stand out from typical rivals.
  • Suitability for small spaces ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.6
    Best suited to apartments or as a daily-runaround vacuum, where a ~20–25 minute floor-cleaning session is enough; less ideal as the only vacuum for large homes.
  • Support & Reliability ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.6
    Ownership confidence is boosted by reports of strong warranty support in some markets/dealers and a general expectation of Miele-grade reliability.
  • Aesthetic design & finish ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.6
    Design is repeatedly described as sleek and premium, with modern color options and textured/matte finishes that look good on display and should resist obvious scuffs.
  • Floorhead design ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.5
    Flat, agile floorhead transitions smoothly across surfaces and fits into tight spaces; several reviews highlight smart floor sensing that ramps brush speed/suction, plus a low, swiveling profile for reaching under cabinets.
  • Area Rug Handling ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.5
    Handles area rugs well and the head can increase brush speed on resistance; on lighter rugs it may feel grabby and can tug the rug while cleaning.
  • Carpet — Low-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.5
    Strong carpet pickup overall, though large debris like oats can scatter and require extra passes.
  • Emptying & Mess Control ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.5
    Emptying is quick and controlled via a bottom-release mechanism, and an onboard brush helps clear clogs; the bin tends not to hold onto dust strongly.
  • Comparative performance ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.5
    Cleans on par with top rivals like Dyson and competes well with Shark, especially in ease of upkeep.
  • Weight ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.5
    Lightweight for its class at about 6.8 lb, making it easy to carry and reach overhead; a few users still find handheld overhead use noticeable over longer stretches.
  • Filtration / Dust Containment ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.4
    Two-stage filtration is claimed to retain up to 99.99% of fine dust; the twist/ComfortClean style cleaner shakes dust from the filter without washing, though it is not an officially certified HEPA system.
  • Controls & UI ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.4
    Controls are intentionally simple: a main power button with a separate boost/high button plus basic battery lights; no screen or advanced UI.
  • Edge & Baseboard Cleaning (Hard Floors) ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.4
    Edge and corner performance is generally strong, pulling hair and dust in close to baseboards; occasional small misses at the very edges are noted in heavy pet-hair settings.
  • Accessories & Tools ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 4.4
    Attachment bundles vary by edition but commonly include crevice, upholstery, dusting brushes, and a motorized Electro Compact pet tool; overall tool set is considered genuinely useful, though some miss a jointed/reach tool for high shelves.
  • Crevice / Groove Pickup (Hard Floors) ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 4.3
    Fine dust can remain in floorboard grooves or between panels after a single pass; a follow-up pass or brushing typically clears the remaining residue.
  • Storage footprint & upright-stand stability ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.3
    Wall-mount storage keeps the vacuum neat and ready between uses; depending on setup you may need to plug in the charger manually and store remaining tools separately.
  • Surface safety with attachments ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 4.3
    Rubberized tips and soft dusting tools help protect trim and furniture; some users mention a minor scratching sound on hard floors that seems related to wheels rather than the brush itself.
  • Cordless convenience ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.2
    Cordless design is ideal for quick, frequent cleanups and grab-and-go use; limited run time means many users treat it as a second vacuum in larger homes.
  • Carpet — High-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.2
    On thick/high-pile carpet it can still clean effectively, but may need extra passes compared with lower-pile surfaces.
  • Maintenance requirements ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 4.1
    Overall upkeep is easy thanks to simple bin emptying and a twist-style filter cleaner, but brushroll hair wrap can add regular hands-on maintenance for long hair and pet owners.
  • Onboard tool storage ★ ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 4.1
    Onboard clip/caddy storage keeps two small tools close at hand, reducing trips back to a closet; larger accessories may still need separate storage and some users want more dock-based tool parking.
  • Price & Value ★ ★ ★ ★ ★ ★ ★ ★ ★ 6 reviews 3.8
    Priced as a premium stick (starting around the mid‑$500s), it often feels worth it for build and cleaning performance, but value is held back by short runtime, small bin, and missing extras like headlights or a spare battery.
  • Hard Floor — Large Debris Intake ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 3.7
    Large debris pickup on hard floors is mixed: medium crumbs can be handled well, but bigger cereal/lentils may scatter or require extra positioning/passes because the soft roller does not crush pieces easily.
  • Battery & Charging ★ ★ ★ ★ ★ ★ ★ ★ ★ 5 reviews 3.5
    Charging takes roughly 3.5 hours and the battery is typically non-swappable, with no spare included; wall-mount charging can require plugging into the vacuum rather than auto-docking.

Cons

  • Runtime (Measured, Default) ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 3.4
    Real-world floor-cleaning runtimes are commonly reported around 15–25 minutes depending on surface and auto ramp-up, with shorter times on carpet; handheld/low-power use can last much longer.
  • Bin & Bag ★ ★ ★ ★ ★ ★ ★ ★ ★ 4 reviews 3.4
    The 0.3L bin is compact and can fill quickly with pet hair, so frequent emptying may be needed; capacity is the most common practicality complaint.
  • Runtime (Measured, Boost/Turbo) ★ ★ ★ ★ ★ ★ ★ ★ 2 reviews 2.9
    High/boost use with motorized heads can be very short (often cited around ~12 minutes), so turbo is best reserved for spot cleanups.
  • Hair‑Wrap / Tangle Resistance ★ ★ ★ ★ ★ ★ ★ ★ 3 reviews 2.3
    Brushroll is not anti-tangle and can wrap quickly with long hair or heavy pet fur; manual removal is often needed even though the roller is designed to pop out for cleaning.
  • Headlight & LED lights ★ ★ ★ ★ ★ ★ ★ 1 review 1.5
    No built-in headlights/LED debris illumination, which some competing premium cordless vacuums include.