Miele Triflex HX3 Aqua Wet/Dry Cordless Stick Vacuum – Obsidian Black

The Miele Triflex HX3 Aqua combines a configurable cordless dry vacuum with an AquaTwister mop attachment. Dry vacuuming and wet mopping are separate steps: the AquaTwister rotates damp pads with the suction motor off, and the machine does not extract spills or dirty wash water.

At a glance

Miele material number 12878500 Listed assembled weight 8 lb (3.6 kg); attachment choice affects carrying weight Dust container 0.5 L; bagless Supplied filtration HEPA lifetime Battery 25.2 V, 2,500 mAh removable lithium-ion; one supplied Power controls LO / EC / HI plus short Boost mode Charging time Approximately 240 minutes (4 hours) per battery Supplied floorhead MultiFloor XXL SEB 436 with BrilliantLight

Included tools and storage

• PowerUnit, Comfort handle, suction wand, one battery and power supply.
• MultiFloor XXL SEB 436 with BrilliantLight electrobrush.
• HX-DB dust brush, HX-UN upholstery nozzle and HX-CN crevice nozzle.
• AquaTwister mop attachment, two AquaPads, 500 mL universal cleaning agent and storage tray.
• Wall mount.

How the three configurations work

With the PowerUnit low on the wand, the floorhead carries more of the motor unit’s weight. With it at the top, the lower assembly can reach farther under furniture. Remove the long wand for compact handheld work. The self-standing pause position is for the PowerUnit-at-bottom configuration on a level surface; it should not be used with the motor unit high on the wand.

Press the power button to start at EC, then select LO or HI if needed. Boost supplies a short 10-second increase, followed by a 5-second cooling interval before it can be selected again. Floor detection adjusts the electrobrush’s power to the floor and roller; it is separate from your selected suction level.

Use the powered floorhead on surfaces approved for rotating brushing, and the small tools for furniture, baseboards and gaps. Check delicate rug and floor care instructions before choosing a roller and power level.

Runtime and charging in context

Miele’s per-battery maxima are up to 70 minutes on low with the PowerUnit alone, 38 minutes on low with an electrical accessory, and 15 minutes on high with an electrical accessory. These are different test configurations. Floor resistance, power level, filter condition and battery age affect usable time.

The battery can be charged on or off the vacuum, using the supplied charger and suitable mount position. For initial activation, the manual requires the battery to be in the PowerUnit for its first charge. Use the charge indicator to plan the next session. A second battery is a separate accessory.

Using the AquaTwister

Vacuum loose debris first, then switch off and attach the AquaTwister with both pads fitted evenly. Select moisture level 0 for no added liquid, 1 for light moistening or 2 for heavier moistening. In mop mode the Boost button provides a 30-second wetting period. Only mop sealed hard floors whose care instructions permit damp cleaning.

Fill and dose the removable tank as directed in the AquaTwister manual; do not put cleaning liquid into the dust container. Empty and clean the water tank after use, wash the pads according to their care labels and use the supplied tray for storage. The dry-vacuum runtime figures above are not a tested mopping-time claim.

Emptying, filters and roller care

Run the ComfortClean filter-cleaning rotation before opening the bin, then empty before the MAX mark. For a deeper clean, remove the filters before washing the detached dust container with mild dish soap and water, and dry the container fully before reassembly. The fine-dust filter and prefilter must stay dry; do not rinse or scrub the fine-dust filter.

The replaceable fine-dust filter is HX-FSF-2. The manual calls for a thorough dry filter clean at least every three months and replacement of the fine-dust filter after approximately three years. “Lifetime” in the supplied exhaust-filter name does not remove this separate fine-filter maintenance. Switch off and detach a powered brush before removing hair from its roller or cleaning the head.

Service and replacement parts

Use the Miele battery and charger specified for the exact model; the HX3 manual identifies the HX-LA 10 replacement battery family. Keep the purchase receipt and the supplied limited-warranty terms for service. Avon Vacuums can help identify the correct parts and warranty support for this HX3 package. Contact Avon or call (860) 678-0011.

Miele specifications for this exact package.