A working definition
Strip the plastics away and every vacuum cleaner is the same machine: a motor spins an impeller, the impeller throws air outward and creates a region of lower pressure behind it, and the atmosphere pushes air into that region through whatever opening is connected to it. If the opening is a nozzle resting on a carpet, the air entering it carries dust, hair and grit. Somewhere between the nozzle and the impeller a separator drops the heavy material into a bag or a bin, a filter catches the fine fraction, and the cleaned air leaves through an exhaust, often through one more filter.
The word vacuum overstates what happens. A household machine lowers pressure at the nozzle by 10-30 kPa against an atmosphere of about 101 kPa; the difference is enough to lift debris but nowhere near a true vacuum. The useful quantities for a buyer are the pressure difference, usually quoted in kPa or Pa, and the volume of air that actually moves, quoted in litres per second or cubic feet per minute. Both matter and they pull against each other, which is the subject of the suction and airflow guide.
The parts every machine shares
| Part | What it does | What varies between machines |
|---|---|---|
| Motor and impeller | Creates the pressure difference and the airflow | Universal brushed motor in corded machines; brushless DC in cordless; one or two motors in wet dry units |
| Power source | Mains cord, lithium battery or 12 V vehicle socket | Cord length and reel; pack voltage and capacity; charger type |
| Nozzle and brush | Agitates the surface and gathers debris into the airstream | Passive floor tool, air-driven turbine, or a motorised roller |
| Separator | Drops heavy debris before the filter | Dust bag, single cyclone, multi-cyclone, water tank |
| Filters | Catch what the separator misses, protect the motor, clean the exhaust | Foam, paper, pleated cartridge, HEPA grades H11-H14 under EN 1822 |
| Housing and controls | Holds the parts, routes the air, carries the switch and indicators | ABS and PP plastics, stainless drums, handles, displays |
On this site each product line carries a bill-of-materials card with six of these parts numbered on an exploded sketch, together with the options a plant will ask about for each. The components category covers the parts as products in their own right for buyers who need motors, battery packs, filters, brush rolls, hoses or bags separately.
Suction, airflow and why both numbers are quoted
Suction, or static pressure, is measured with the nozzle sealed: the motor pulls as hard as it can against a closed opening and the gauge reads the pressure difference. Airflow is measured with the opening free. A machine that reads 25 kPa sealed may move less air than one reading 18 kPa if its airway is narrow or its filter is dense. Carpet cleaning depends mostly on airflow through the brush head and on the roller; lifting a coin or a heavy grit depends on pressure. Sealed-nozzle kPa makes good marketing and poor engineering on its own, so a buyer should ask for both figures and for the test method behind them. Performance test methods are standardised in the IEC 62885 series and noise in IEC 60704-2-1, which lets reports from different plants be compared.
Filtration in one paragraph
Dust that passes the separator is small, and the finest part of it is what filters are rated on. EN 1822 and ISO 29463 define HEPA grades by the fraction captured at the most penetrating particle size: H13 captures at least 99.95% and H14 at least 99.995%. A filter grade says what the media can do on a test rig; the machine's exhaust also depends on seals and on whether air can bypass the filter. Describing a machine by its EN 1822 grade is accurate; describing it as medical or allergy-proof is not a claim a test report supports. The filtration grades guide goes further.
The main types
Types are defined by where the motor sits and how power reaches it, which in turn sets the price band and the buyer.
- Robot vacuums carry a small motor and battery in a self-driving chassis with sensors or a laser turret; docks that empty the bin or wash a mop pad are now common. Buyers are brands and marketplace sellers. See robot vacuum cleaners.
- Cordless stick vacuums put a brushless motor, cyclone and battery in a hand unit with a wand and a motorised head; the default new purchase in most Western homes. See cordless stick vacuums.
- Uprights are corded machines with the motor and bin over a wide brush head; still the North American carpet machine.
- Canisters keep the motor and bag in a body on wheels and reach the floor through a hose; the European default and the quiet option.
- Handheld and car vacuums are small units for stairs, furniture and vehicles, battery or 12 V powered.
- Wet dry vacuums use a drum with a float valve so liquids can be collected; sold to workshops, garages and cleaning contractors.
- Backpack, commercial and central systems serve hotels, offices and buildings with long cords, durable housings and large bags.
- Industrial dust extractors run larger motors, sometimes three-phase, with filter banks for continuous dust from woodworking or production.
The household and commercial groups are split into two categories on this site, household vacuum cleaners and commercial and industrial vacuums, and vacuum cleaner types explained compares them in more depth.
Power type decides the paperwork
A corded machine is tested to IEC/EN 60335-2-2 with the general rules of IEC 60335-1, and in North America to UL 1017; in the EU a mains-operated household vacuum also falls under ecodesign regulation 666/2013, which caps rated input power at 900 W and sets dust pick-up and motor-life minimums. A cordless machine escapes 666/2013 but gains battery rules: UN 38.3 for transport, IEC 62133-2 or UL 2054 for the pack. A robot with Wi-Fi adds radio rules, CE RED in Europe and FCC in the United States. None of these are certificates a sourcing desk holds; they are routes a plant follows for a model, and the documents are verified per project. The certifications guide lists them by market.
What a buyer should ask first
- Which power type and which market, because that fixes the standards and the plants that can serve it.
- Which performance numbers matter to the end customer: airflow and brush for carpet, runtime for cordless, noise for hotels, tank size for workshops.
- Which parts must be customised and which can stay on the plant's platform, since tooling drives the minimum and the lead time.
- Which spare parts will be sold for the life of the product: filters, battery packs, brush rolls, bags.
- What the quantity per model and the in-warehouse date are, so the desk can match plants and quote a realistic schedule. The quote form asks exactly these.
Reference quantities and timing are on MOQ and lead time; how to read vacuum specs is the natural next note.