Air Purification · Singapore
Washable Electrostatic vs HEPA Air Purifiers
Both can capture airborne particles. The important differences are how they hold those particles, how airflow changes as material accumulates and whether ownership means washing a collector or replacing a filter.
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Velta Singapore Editorial Team
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A filter label does not tell you how quickly a purifier can clean a room, how loud it will be at the required setting or what it will cost to maintain. Start with the capture mechanism, then compare clean-air delivery and the upkeep you are willing to perform.
The mechanism
Two ways to hold an airborne particle
Washable electrostatic capture
Charge. Attract. Hold.
An electric field gives particles a charge. Oppositely charged collector surfaces then attract and retain those particles until the collector is cleaned.
- Room airflow carries suspended pollen, dander, smoke and other fine particles into the purifier.
- The electrostatic field charges particles travelling through the capture stage.
- Collector surfaces attract and hold the charged material until the panel is washed.
HEPA mechanical capture
Intercept. Impact. Diffuse.
A dense mat of fibres captures particles through several physical mechanisms as air follows a winding route through the pleated filter.
- Air is pushed through a tightly packed, pleated fibre medium.
- Particles collide with fibres, pass close enough to stick, or wander into a fibre through diffusion.
- The loaded filter is replaced on the appliance manufacturer’s schedule.
How CoreCharge handles allergens
It captures the airborne carrier.
Pollen, pet dander and other particle-based allergens can move through a room, settle on surfaces and return to the air. When those airborne particles pass through AirLab, CoreCharge gives them an electrical charge and attracts them to its collector surfaces. The material remains on the collector until it is rinsed away.
This is capture, not diagnosis: the purifier’s sensor cannot identify a pollen species or pet allergen, and settled material still needs routine cleaning.
Side by side
Compare the ownership model
Scroll to see the full table
| Question | Washable electrostatic | HEPA |
|---|---|---|
| How are particles held? | Charged particles are attracted to collector surfaces. | Particles are mechanically captured within a pleated fibre matrix. |
| Routine upkeep | Remove, wash, dry completely and reinstall the collector. | Inspect and replace the filter on the stated schedule or indicator. |
| Routine filter consumables | Collector washing rather than scheduled disposable-filter replacement; other parts or service may still have costs. | Replacement filters are part of normal ownership; price and interval vary by model. |
| What happens as material builds up? | Collector loading can reduce performance, so regular cleaning matters. | Filter loading can increase resistance and reduce airflow, so timely replacement matters. |
| How to compare whole machines | Use tested CADR, the room-size method, sound at the setting you will use, energy consumption and the required maintenance—not the filter label alone. |
Consumable cost
Put your own filter price into the calculation
A fixed savings claim is rarely useful because replacement-filter prices and schedules differ by model and room conditions. Use the actual price and recommended interval for the HEPA purifier you are considering.
For a consumables-only comparison, multiply the actual replacement-filter price by the number of changes per year and the years of ownership. AirLab’s collector is designed to be washed and reused; this does not mean every part lasts indefinitely or that ownership has no cost. Include electricity, water, cleaning time, servicing and damaged-part replacement separately.
Which fits you?
Choose the maintenance you will actually do
A washable electrostatic purifier may fit when…
You prefer a reusable collector, can wash it on schedule and have space to let it dry completely before reinstalling it.
A HEPA purifier may fit when…
You prefer to remove and replace a loaded filter, accept the ongoing consumable cost and can reliably source the correct cartridge.
Neither choice removes the need for source control, ventilation where appropriate and surface cleaning. The right purifier is the one sized for the room and maintained correctly.
Velta CoreCharge™
See washable electrostatic capture in AirLab.
AirLab P80S pairs a washable pre-filter with a washable CoreCharge™ collector, 441 m³/h smoke CADR, sealed UV-C and real-time PM2.5 and TVOC sensing.
CoreCharge™ collector surfaces inside AirLab P80S
Official and product sources
Sources
Next step
Compare the products for your home.
Velta Singapore sells some of the products discussed in this article. Compare what they do, how they install and what they cost to run against the other products in the guide.
Product prices, promotions and availability can change. Include the maintenance and installation requirements in your comparison.