What the words mean
A standard filter in a vacuum is usually a foam or mesh pre-filter, sometimes with a paper or non-woven cartridge, whose job is to protect the motor and catch the dust that got past the separator. A HEPA-class filter is pleated fine-fibre media rated under EN 1822 or ISO 29463, where the grade is defined by capture at the most penetrating particle size, known as MPPS. H13 captures at least 99.95% at MPPS and H14 at least 99.995%, with H11 and H12 below those. These are filter-media grades measured on a test rig. A whole machine adds housing seals, gaskets and the question whether any air bypasses the filter. For that reason the sourcing desk writes the EN 1822 grade of the filter and does not describe the machine with medical or allergy wording, which no test report on a vacuum supports.
Side by side
| Factor | Standard filter stack | HEPA-class stack (EN 1822 grade) |
|---|---|---|
| Performance | Lower resistance, higher airflow for the same motor; lets more fine dust reach the exhaust | Higher resistance; needs a motor and airpath sized for it; captures fine dust at the graded level |
| Cost drivers | Foam, mesh or paper media, simple frame | Pleated media, frame and seal, larger filter area, tighter housing sealing, test evidence per batch |
| Maintenance | Often washable foam; easy to clean | Replaceable or washable by design; spare filters are a repeat purchase |
| Certification route | IEC/EN 60335-2-2 and market standards; no filtration claim to document | Same standards plus filter test report to EN 1822 or ISO 29463 for the grade claimed; documents verified per project |
| MOQ reference | Public-mould about 200-500 per model; filters by the thousand | Same machine bands; filter components by the thousand; HEPA frames may be extra tooling in ODM |
| Fits which buyer | Value-led ranges, workshop and garage machines, cleaning on hard floors | Pet-hair lines, hospitality and office fleets, brands that want filtration on the spec sheet |
Ranges are typical across the category and confirmed per model datasheet; timing references are on MOQ and lead time and confirmed in writing for each program.
When a graded filter matters
A graded filter matters where the buyer or end user pays attention to what leaves the exhaust. Pet-hair lines, where dander and fine hair are part of the product story, almost always carry a HEPA-class stage; hotel and office fleets often ask for one because staff and guests share the air; and brands selling into households that care about dust will lead with it. It also matters when a retailer or a tender asks for an EN 1822 grade on the datasheet. In those cases specify the grade by name, request a test report for the filter media, and check that the seals around the filter are tested, since bypass defeats the media. See pet hair vacuums for a line where the filter is part of the offer.
When a standard filter is enough
A standard stack is a sound choice where the machine mainly protects the motor and the user mainly wants to move dust from the floor to the bin. Workshop and garage machines, wet dry units picking up coarse debris, entry-level cordless sticks and low-price canisters often fall in this group. Pushing HEPA media into a machine with a small motor and a tight airpath can cost more airflow than it returns in capture, and it makes the filter a consumable that the owner must replace. A well-sealed foam and cartridge stack with a clear cleaning schedule gives a calmer product with fewer returns. A buyer who needs both can offer a base model with a standard stack and an upgrade with a HEPA-class filter on the same body.
What a grade does not tell you
Three limits are worth stating plainly. First, the grade describes the media, not the machine, unless a whole-machine test is also reported. Second, loading changes everything: a dirty filter raises resistance and cuts airflow, so suction falls as the filter loads, which is why cleaning intervals and replacement parts belong in the plan. Third, a higher grade is not automatically better for the customer; a filter that restricts airflow too much can lower carpet pick-up. The suction and airflow guide explains how pressure and airflow interact. Use the grade as one line on the specification, not as the headline of the product.
Filter area, sealing and the cost of getting it right
Two filters of the same grade can behave very differently in a machine. Filter area is the first variable: a pleated element with more media area has lower resistance at the same airflow and loads more slowly, but it needs more room in the housing, which is why compact cordless sticks often carry small filters that need frequent cleaning. Sealing is the second: a gasket that is crushed, a frame that warps or a joint that opens after a drop sends air around the media. Plants control this with moulded gaskets, locating ribs and a check on a sample from each batch, and the buyer can ask which of these are in place. The third variable is media supply: HEPA-class media comes from a small number of specialist suppliers, so the desk asks the partner plant to name the media source and to agree a substitute process in writing before any change. These details explain most of the cost gap between a graded stack and a standard one, and they decide whether the grade on the datasheet means something on the finished machine.
Compliance and claims
Filtration claims are matters of evidence. The filter grade is supported by an EN 1822 or ISO 29463 report for the media, the machine by IEC/EN 60335-2-2 and UL 1017 in North America, and in the EU a mains household model also falls under ecodesign regulation 666/2013. Vaculent holds no certificates; documents come from the partner plant and are verified per project. Avoid words that imply health outcomes; state the grade, the filter area if known and the sealing method. See the certifications guide for the market routes.
What to specify
- The filter stack in order: pre-filter, main filter, HEPA-class stage, optional carbon layer.
- EN 1822 grade by name (H11 to H14) and the test report for the media.
- Seal design around the filter and the housing joints.
- Washable or replaceable, cleaning interval and drying instructions.
- Airflow with a loaded and a clean filter, tested to the same method.
- Spare filter supply for the life of the product.
Send the line, market and grade you want through the quote form and the desk will compare partner plants against the same filter sheet. For the separator side of the question read bagged vs bagless vacuums.