Frequently Asked Questions

An air purifier circulates indoor air through one or more filtration stages designed to capture or reduce specific airborne particles and pollutants.

Indoor air can contain dust, fine particles, odors and other airborne pollutants. An appropriate air purifier can help improve indoor air quality by filtering the air circulating through the room.

Consider the room size, purifier coverage, CADR, filtration system, noise level and available features. The purifier should be suitable for the size of the space where it will be used.

An air purifier works primarily in the space where it is operating. For larger homes or multiple rooms, more than one unit may be needed depending on the layout and airflow.

PM2.5 refers to fine particulate matter with an aerodynamic diameter of 2.5 micrometres or smaller. These fine particles can remain suspended in the air and are an important indicator of air quality.

PM2.5 consists of very small airborne particles. Indoor sources and outdoor air entering a building can contribute to particulate pollution indoors.

Air purifiers equipped with suitable particle filtration can reduce airborne particulate matter as air passes through the filter. Performance depends on the filtration system, airflow and room conditions.

PM2.5 describes particles that are 2.5 micrometres or smaller, while PM10 includes particles up to 10 micrometres in aerodynamic diameter.

HEPA stands for High-Efficiency Particulate Air. HEPA filtration is designed to capture very small airborne particles as air passes through the filter.

Activated carbon is commonly used to help reduce certain odors and gaseous pollutants through adsorption.

Filter replacement depends on the purifier, filter type, usage and indoor air conditions. Always follow the replacement guidance provided for your specific model.

Most standard HEPA filters are not designed to be washed. Check the instructions for your specific purifier before cleaning or replacing the filter.

Some air purifiers include a filter replacement indicator. Reduced airflow, increased odor or a visibly loaded filter can also indicate that maintenance may be required.

Place the purifier in an open area where air can move freely around the unit. Avoid blocking the air intake or outlet with walls, furniture or other objects.

Keeping doors and windows closed can reduce the continuous entry of outdoor pollutants while the purifier is operating. However, appropriate ventilation is also important depending on the indoor environment.

Clean the exterior and accessible air intake and outlet areas according to the manufacturer’s instructions. Do not expose electrical components or non-washable filters to water.

Many air purifiers are designed for extended operation. Follow the operating instructions and recommended settings for your specific model.

Electricity consumption depends on the purifier’s power rating, operating mode and how long it runs. Lower-speed modes generally use less power than higher-speed operation.

No. Air purification and ventilation serve different purposes. An air purifier filters air that passes through the unit, while ventilation helps exchange indoor and outdoor air.

No single air purifier removes every type of indoor pollutant. Different filtration technologies target different types of particles, odors and gases.

CADR is one important specification, but the right purifier also depends on room size, filtration, noise, operating modes and other requirements.

Yes. An air purifier can be used in a bedroom when its specifications and operating noise are suitable for the space.

The time depends on room size, CADR, airflow, initial air quality and how the purifier is operated. A properly sized purifier can circulate and filter room air more effectively than an undersized unit.