A shop vacuum is easy to judge when the filter is clean. The harder test begins after drywall dust, concrete fines, sawdust and jobsite debris start coating that filter and the airflow the crew paid for begins disappearing.
That is what makes the Milwaukee NEXUS vacuum more interesting than its headline CFM numbers. Milwaukee is building debris separation, filter cleaning, interchangeable motor heads and wireless activation into the same modular architecture, moving the wet/dry vacuum closer to territory traditionally occupied by dedicated dust extractors. Wireless activation already attacks one part of that workflow problem through VACLINK dust control. NEXUS goes after another: what happens after the dirt actually reaches the machine.
Peak CFM Is the Easy Number to Advertise
Milwaukee rates its single-battery 6-gallon NEXUS configuration at 95 CFM. The dual-battery motor head increases that figure to 115 CFM.
Those specifications establish maximum airflow, but they do not tell contractors what the vacuum will feel like after the filter has processed a large volume of fine material.
Filters add resistance. As material loads into the media, the vacuum has to pull air through an increasingly restrictive surface. Eventually the operator notices weaker pickup, poorer capture at the tool or more time spent servicing the filter.
That makes sustained airflow a more useful performance question than peak airflow alone.
Milwaukee’s NEXUS architecture addresses that problem in two different ways: keep debris away from the filter, or clean the filter without removing it.
Those approaches sound similar. They solve different problems.
The Separator Tries to Keep the Filter Out of the Fight
The NEXUS Dedicated Debris Separator, model 0990-20, installs between the vacuum motor head and tank.
Milwaukee says the module separates up to 99% of jobsite debris before it reaches the vacuum filter. The company’s NEXUS system specifications position that separation as a way to reduce clogging, extend filter life and preserve airflow longer.
The important word is debris.
That 99% figure is a manufacturer claim for jobsite debris, not a universal filtration-efficiency rating for every particle size or hazardous dust. Contractors should not read it as meaning the separator removes 99% of respirable silica or replaces downstream filtration.
Its value is more mechanical than regulatory.
Wood chips, coarse dust and larger material that never reaches the filter cannot load that filter. That can mean fewer interruptions and less performance loss during high-volume cleanup.
The design also removes one of the annoyances of traditional cyclone setups: a separate collection bucket and another length of hose occupying floor space. NEXUS integrates the separation stage into the vacuum stack itself.
Integration is the real innovation.
The Filter Cleaner Attacks the Fine-Dust Problem Differently
The Dedicated Filter Cleaner, model 0991-20, also mounts between the NEXUS motor head and tank.
Instead of preventing material from reaching filtration, it gives operators a contained way to clean loaded filters while they remain installed.
Milwaukee says the cleaning cycle takes five seconds or less and describes the process as fully contained, reducing the need to pull dusty filters out of the machine during normal servicing.
That matters more with fine material.
Removing a dirty filter can become one of the messiest moments in the entire dust-control process. The vacuum may have captured the material correctly, only for part of it to become airborne again when someone knocks, shakes or handles the filter.
A contained cleaning system does not eliminate proper maintenance or disposal procedures, but filter servicing becomes part of the machine rather than a separate dusty chore.
That is the feature that most clearly blurs the boundary between wet/dry vacuum and professional extractor.
A Better Shop Vac Is Still Not Automatically a Dust Extractor
This is where the NEXUS story needs restraint.
Milwaukee says the filter-cleaner configuration can support OSHA Table 1 compliance for certain light concrete applications. That does not mean every NEXUS configuration satisfies every silica-producing task.
OSHA’s construction silica requirements specify controls by task. Depending on the operation, Table 1 can require a particular shroud or cowling, manufacturer-recommended airflow, filtration efficiency, a filter-cleaning mechanism or cyclonic pre-separator, and respiratory protection.
For handheld grinders using applicable dust-collection controls, OSHA specifies at least 25 CFM per inch of wheel diameter.
That arithmetic matters.
A 5-inch wheel corresponds to 125 CFM. Milwaukee’s 95-CFM single-battery NEXUS and 115-CFM dual-battery rating are both below that threshold on their published headline airflow specifications.
So a contractor should not see “filter cleaner,” “HEPA,” or “silica compliant” and assume the vacuum is appropriate for every grinder.
The right question is always task-specific: tool, wheel or bit size, shroud, airflow requirement, filtration, work environment and operating procedure.
For crews regularly working concrete, the broader dust extractor selection guide remains the better framework for deciding what the complete system needs.
Modularity Changes the Buying Decision
Milwaukee lists the standard 6-gallon NEXUS vacuum at $249 and the VACLINK-equipped version at $299. The Dedicated Debris Separator is listed at $99, while the Dedicated Filter Cleaner is $149. The dual-battery motor head is $249 before the other system components needed to create a complete configuration.
That modular pricing cuts both ways.
A contractor doing general cleanup may have little reason to pay for specialized filter management. A remodeling crew handling large amounts of sawdust and mixed debris might see far more value in keeping material away from the filter.
Concrete drilling, drywall work and other fine-dust applications create a different priority: maintaining filtration and cleaning the filters without repeatedly opening the system.
The architecture lets buyers decide where their bottleneck actually sits.
But modularity can become expensive when every useful capability becomes another component. Contractors should compare the cost of the configuration they will actually use not the price of the base vacuum alone against a dedicated extractor that already includes automatic filter cleaning, tool activation and the required filtration features.
The Real Test Is Performance After the Filter Gets Dirty
Milwaukee’s NEXUS concept points toward a more useful way to evaluate jobsite vacuums.
A clean-filter CFM specification is a starting point. It is not the whole performance story.
Contractors should care about how quickly airflow deteriorates under fine dust, how effectively the separator protects the filter, how much performance the cleaning cycle restores, how often the operator has to intervene and how easily captured material can be emptied without releasing it again.
Those are harder numbers to market because they require loaded-filter testing rather than a single specification.
They are also closer to the conditions crews actually work in.
The Milwaukee NEXUS vacuum does not erase the distinction between a wet/dry vacuum and a dedicated dust extractor. Its published airflow alone makes clear that some demanding silica-control applications still require something different.
What NEXUS does demonstrate is where the category is heading. The ordinary shop vac is becoming less of a motor sitting on a bucket and more of a configurable debris-management platform.
The next meaningful vacuum comparison may therefore have less to do with which machine produces the biggest number with a clean filter and more to do with which one keeps working after the dust arrives.