Select a dust extractor by the evidence for the complete capture arrangement: material and task, tool and shroud, hose and adapters, extractor, filter and collection setup, and maintenance instructions. A HEPA label answers a filtration question. It does not identify every other part of that arrangement or establish that the proposed work meets applicable exposure-control requirements.
Evidence label: specification/documentation-based evaluation and comparative research. ClearTrade Report Editorial Team has not performed hands-on testing, measured jobsite exposure or professionally used the example equipment. This guide provides a selection worksheet, not a product ranking, individual equipment approval or exposure-control plan.
Define the task before requesting equipment
Write down the material, operation, exact tool and accessory, work location and expected use. Ask who is responsible for selecting the controls and confirming their suitability. Use that description when asking a supplier for documentation. A request for a good HEPA vacuum leaves too many consequential choices unstated.
Keep source capture and housekeeping on separate lines. The attachment used while a tool generates dust and the equipment used to collect settled debris are different proposed uses. A supplier should explain the basis for each. Do not assume a configuration accepted for one activity automatically covers the other.
Identify any additional material hazards before extending a silica-focused example to the job. The point is to define the purchasing question accurately, rather than ask a general-purpose equipment label to stand in for that evaluation. This guide does not specify controls for asbestos, lead, combustible dust or another hazardous material.
Separate filtration from the rest of the control
The federal construction silica standard defines HEPA filtration as at least 99.97 percent efficiency for mono-dispersed particles 0.3 micrometers in diameter. Some Table 1 dust-collection entries specify a filter efficiency of at least 99 percent plus other conditions. Those are different criteria. A filter label alone does not establish that a complete Table 1 entry has been implemented.
Table 1 varies by task and includes engineering controls, work practices and respiratory-protection conditions. Paragraph (d) provides the alternative exposure-control approach. Ask the responsible employer or competent person which requirements apply to the actual work, including applicable state-plan rules. Federal construction silica standard.
NIOSH describes a layered approach to exposure prevention and emphasizes keeping engineering controls working properly. Treat equipment selection as one part of that process. A brochure cannot establish the exposure experienced by an individual worker. NIOSH safe-work guidance, updated July 7, 2026.
Ask what the airflow number describes
Before comparing two airflow claims, request the measurement basis and the configuration to which each number applies. Is it described as a maximum? Which hose, filter, collection arrangement and attachments are included in the stated condition? Is there a tool-specific requirement or documented compatible system?
Do not convert an unexplained headline into a claim about delivered airflow at the proposed shroud. Record the missing information and ask for the relevant manufacturer document or clarification. If the supplier cannot provide a comparable basis, keep that limitation visible instead of assigning a winner.
Likewise, avoid treating suction pressure, airflow, container size and filter efficiency as interchangeable measures of performance. Put each published specification in its own column with its units and source. A large collection container may answer a handling question without answering the capture question you started with.
The practical request is simple: show the documentation for this task and this complete setup. That is more useful than asking which machine has the biggest number.
Build a configuration worksheet
Ask the supplier to fill in a row for every proposed configuration. Retain exact model numbers and document revisions so a later substitution can be checked against the same record. Leave unknowns explicitly unresolved.
| Selection item | Evidence to request | Question before comparison |
|---|---|---|
| Material and task | Written task description and control-selection basis | Are both proposals addressing the same work? |
| Tool and capture attachment | Exact tool, accessory and shroud or hood documentation | Is the proposed combination identified? |
| Hose and adapters | Part numbers, dimensions and documented connections | Does the evidence cover this arrangement? |
| Extractor and airflow | Model, published rating and measurement conditions | Are the compared figures on the same basis? |
| Filter and collection setup | Exact filter, bag or container provisions | What is supplied, and what must be added? |
| Cleaning and maintenance | Applicable instructions and service requirements | Who maintains the arrangement during use? |
| Limitations and exclusions | Intended uses, prohibited uses and unresolved data | Is the proposed application within the documented scope? |
This is an original purchasing worksheet, not a list of universal regulatory requirements. The responsible person still needs to identify the rules and instructions for the actual work.
An adapter that physically connects two parts answers only the fit question. Ask for the basis on which the complete arrangement is proposed for the task. Do not write approved in the worksheet simply because the supplier lists a connector as available.
Read the manual behind the product page
A document example shows why the exact configuration matters. Bosch’s current GAS20-17AH product page links a GAS20-17A operating manual, document 2610051564 dated 05/18. The product page lists the base extractor and supplied HEPA filter as kit components. The manual identifies 300 CFM as a maximum, rather than a measured result at every tool connection.
Its dry-vacuuming provisions specify a HEPA filter and filter bag for reducing silica exposure, while its wet-vacuuming provisions exclude the HEPA filter. That distinction means wet/dry capability should not be read as permission to leave every component unchanged for every use. Use the full applicable instructions for the exact unit and work. Bosch product page and linked manual.
This is a documentation example, not a recommendation or evidence of current recall clearance, individual certification, warranty eligibility or suitability for your job. The old date is the date of the currently linked document; it is not a claim that the manual was newly issued in 2026. If the unit or document differs, resolve the match with the manufacturer.
For any candidate, preserve the manual you actually used. Check the model and variant on the unit, the document revision and the supplied accessories. Similar family names do not justify applying another model’s manual. Do not silently replace a missing current document with retailer copy or an unidentified rehosted PDF.
Include maintenance and collection in the proposal
Request a written explanation of filter inspection, cleaning provisions, replacement parts, collection consumables and emptying or disposal instructions for the intended material. Ask who supplies those items and who is responsible for the work. Record any task-specific provisions rather than improvising them from a generic vacuum guide.
A purchase comparison should also expose the ongoing arrangement: required consumables, access to replacement parts, transport and storage constraints, and the instructions supplied to users. Keep those questions separate from claims about filtration or task compliance. Convenience features are useful comparison criteria after the consequential selection questions have been resolved.
Federal silica housekeeping provisions also have specific conditions and exceptions; do not replace them with a blanket statement that one cleaning method is always permitted or always prohibited. Have the responsible person identify the applicable housekeeping method for the work. This article does not provide a hazardous-dust emptying procedure.
Compare complete proposals fairly
Consider two fictional equipment proposals. Proposal A lists an extractor and a filter. Proposal B lists an extractor, filter, hose, shroud and collection bags. Neither identifies the exact tool or task. Their prices are not yet a meaningful comparison of complete solutions.
Send the same task description and worksheet to both suppliers. Ask them to identify what is included, what is excluded, what documents support the configuration and which questions remain unresolved. Compare the completed scope before comparing optional features or package price. No fictional price or performance score is needed to identify the missing evidence.
| Proposal statement | Useful follow-up |
|---|---|
| HEPA filter included | Which exact filter and collection setup does the proposed use require? |
| High airflow | What rating basis and configuration does the number describe? |
| Fits the tool | Which exact tool, attachment and connection are documented? |
| Ready for the job | Who checked the task requirements, limitations and missing components? |
| Easy maintenance | Which instructions, consumables and responsibilities are included? |
Our maintenance-bid comparison framework offers a related way to keep scope and exclusions visible. It does not specify dust-control equipment or replace a project exposure-control plan.
Keep the decision record usable
Retain the selected component list, manuals, supplier clarifications and the identity of the person responsible for control selection. Record approved substitutions rather than letting the equipment list drift away from the documented proposal. Do not label an unresolved configuration accepted simply because purchasing is complete.
For an existing extractor, ask whether the available instructions match the actual unit and accessories. A document-review exercise does not establish its present physical condition. Have the responsible person address missing components, damage or maintenance questions before treating the machine as ready for the proposed work.
The next step is to prepare one task description and send the same configuration worksheet to each supplier. Request the evidence that closes the gaps. This guide helps organize that comparison; it does not replace the employer’s assessment, required controls, training or inspection of equipment.
For occupied renovations, equipment selection is one part of a project plan. Our remodel dust containment guide covers barriers, airflow evaluation, trade handoffs, cleanup and reopening evidence.
Frequently asked questions
Does a HEPA label establish task compliance?
No. It describes a filtration claim. The proposed task, complete equipment arrangement, operating conditions and applicable requirements still need to be checked.
Can I compare dust extractors by maximum CFM alone?
No. Request the rating basis and proposed configuration, then compare the documentation against the actual tool and task.
Does a hose adapter prove compatibility?
No. A physical connection does not by itself establish that the complete arrangement is documented for the proposed use.
Did ClearTrade test or rank the example extractor?
No. The example illustrates manufacturer-document review. ClearTrade performed no hands-on testing, exposure measurement or product ranking.
Sources and scope
Primary sources checked October 27, 2026: federal construction silica standard 29 CFR 1926.1153; NIOSH Safe Work Practices, updated July 7, 2026; Bosch GAS20-17AH product page and its linked GAS20-17A manual 2610051564, 05/18. eCFR displayed Title 29 current through October 23, 2026; its title-level amendment date is not a claimed amendment date for this particular section. No individual product approval, paid-standard review, outside professional review or jobsite testing is claimed. There are no affiliate purchase links, samples or sponsorship in this guide.
AI tools assisted with drafting. ClearTrade Report Editorial Team checked the cited sources and edited this guide. No hands-on inspection or testing was performed.
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