The air inside your home may look clean, but it can contain dust, fine particles, allergens, and other airborne pollutants that are difficult to see. An air purifier is designed to help filter these particles from indoor air, making it a useful appliance for modern homes.

But what is an air purifier, how does it work, and do you really need one?

Whether you live in a busy city, deal with dust regularly, or simply want better control over your indoor air quality, understanding how air purifiers work can help you choose the right one for your home.

In this guide, we'll explain what an air purifier does, how its filters work, why room size matters, and how to choose the right Philips air purifier for your space.

What Is an Air Purifier?

An air purifier is an appliance that filters indoor air by drawing room air into the device, passing it through a filtration system, and circulating the filtered air back into the room.

Depending on the model, an air purifier may use different types of filters to target different airborne pollutants. Philips air purifiers available on the Domestic Philips website include models with HEPA filtration and models that combine HEPA and activated carbon filtration.

An air purifier is not a replacement for regular cleaning or ventilation. Instead, it can complement everyday efforts to maintain a cleaner indoor environment.

How Does an Air Purifier Work?

The basic process is simple:

Indoor air → Air intake → Filtration → Filtered air → Circulation

1. Air is drawn into the purifier

A fan pulls air from the surrounding room into the appliance.

2. Air passes through the filters

The incoming air passes through the purifier's filtration system. The type of filtration depends on the specific model.

3. Airborne particles are filtered

A HEPA filter is designed to capture very small airborne particles. Some Philips models also use an activated carbon filter, which can help with certain gases and odours.

4. Filtered air is circulated

After filtration, the air is released back into the room, and the cycle continues while the purifier operates.

What Does a HEPA Filter Do?

HEPA filtration is designed to capture very small airborne particles. It is therefore an important feature to consider when comparing air purifiers.

Some of these models combine HEPA filtration with activated carbon filtration, offering a broader filtration approach.

What Does an Activated Carbon Filter Do?

Activated carbon filtration is different from HEPA filtration. It is commonly used to help reduce certain odours and gases from indoor air.

On the current Domestic Philips collection, the AC1711/63, AC1715/60, AC3220/60, AC3221/63, and AC4221/61 are listed with both HEPA and activated carbon filters.

If odour and gas filtration are important to you, check the filtration system of the individual model before buying.

Why Do You Need an Air Purifier at Home?

Indoor air quality can be affected by outdoor pollution, dust, cooking, smoke, and everyday household activities.

An air purifier may be useful if you:

• Live in an area where outdoor air pollution is a concern

• Experience dust or airborne particles indoors

• Spend a significant amount of time at home

• Want an additional layer of indoor air filtration

• Prefer to monitor indoor air quality

• Want filtration for particles and, with suitable models, certain odours and gases

The right purifier depends on your room, usage, and filtration requirements.

How to Choose the Right Air Purifier?

Choosing an air purifier isn't simply about buying the most powerful model. Room coverage, airflow, filtration, and useful features should all be considered.

1. Choose According to Room Size

Room coverage is one of the most important factors.

The current Domestic Philips collection includes models for different room sizes:

These are the specifications currently displayed on the Domestic Philips Air Purifiers collection.

2. Look for Air-Quality Monitoring

Some Domestic Philips models include air-quality-related features. For example, the AC0920/60 is listed with an AQI display, while the AC1711/63 and other models offer additional air-quality monitoring or smart features.

These features can make it easier to understand indoor air-quality conditions while the purifier is operating.

3. Consider Noise and Everyday Convenience

If you plan to use an air purifier in a bedroom or living area, operating noise and convenience become important considerations.

Which Philips Air Purifier Should You Choose?

A simple way to narrow your options is to start with your room size:

• Up to 300 sq. ft.: AC0920/60 or AC0950/60

• Up to 380 sq. ft.: AC1711/63 or AC1715/60

• Up to 667 sq. ft.: AC3220/60 or AC3221/63

• Up to 775 sq. ft.: AC4221/61

• For a 500 sq. ft. space with a focus on quiet operation: AC2220/60 or AC2221/63

Always check the latest product page for detailed specifications before purchasing.

How to Maintain Your Air Purifier

Regular maintenance helps your air purifier perform as intended.

• Check the filter regularly according to the product instructions.

• Replace the filter when required.

• Keep the air inlet and outlet unobstructed.

• Clean the exterior regularly.

• Avoid placing the purifier where airflow is restricted.

• Follow the maintenance instructions specific to your model.

Remember that filter replacement is an important part of air purifier maintenance.

Frequently Asked Questions

Is an air purifier worth buying?

An air purifier can be a useful addition to your home if you want additional indoor air filtration, particularly where dust, airborne particles, or outdoor pollution are concerns.

Does an air purifier remove dust?

An air purifier with suitable particle filtration can capture airborne particles, including some dust particles. However, it should be used alongside regular cleaning.

Which air purifier is best for home use?

The best air purifier depends on your room size, filtration requirements, airflow, and preferred features. Choose a model with coverage appropriate for the room where it will be used.

Does an air purifier remove odours?

Models with activated carbon filtration can help address certain odours and gases. Check the individual product specifications before purchasing.

How often should an air purifier filter be replaced?

Filter replacement depends on the specific model and usage conditions. Always follow the replacement guidance provided for your Philips air purifier.

Find the Right Air Purifier for Your Home

Knowing what an air purifier is and how it works makes choosing the right appliance easier. Start with the most important factors: room size, filtration system, airflow, noise level, and features that fit your everyday needs.

The Domestic Philips Air Purifier collection includes options for smaller rooms, larger living spaces, and users looking for features such as air-quality monitoring or quieter operation.

Explore the Philips Air Purifier Collection and choose an air purifier designed to suit your space and indoor air-filtration needs.