Air Purifier Myths That Indians Still Believe

Key Takeaways:

• Indoor air pollution is a continuous issue in Indian homes and cannot be accurately judged by sight or smell alone.
• Ventilation and indoor plants have benefits, but they cannot replace air purifier filtration.
• A room air purifier is effective only within its designed coverage area; one device cannot clean an entire home if it doesn’t match the CADR.
• Air purifier performance varies significantly based on filtration technology and CADR, with HEPA systems being essential for fine particle removal.

While outdoor air pollution often dominates conversations, indoor air quality tends to be overlooked, even though people spend most of their time inside their homes. Indoor air can carry fine dust, allergens, cooking emissions, smoke particles, and pollutants that gradually build up over time. With sealed windows, frequent air conditioning, and limited ventilation, these particles don’t always escape easily, making indoor spaces more affected than they appear.

Because these changes are not always visible, many households rely on assumptions rather than verified solutions. Opening windows, using fans, or adding indoor plants may improve airflow, but they do not actively remove fine airborne particles. This gap between perception and reality is where confusion begins. Air purifiers are often misunderstood or compared to basic ventilation methods, leading to unrealistic expectations about their role in improving air quality.

It is necessary to investigate the myths to establish realistic expectations about what an air purifier can and cannot accomplish.

Myth 1: Opening Windows Provides Sufficient Fresh Air

Ventilation systems can enhance airflow but fail to provide clean air. In highly populated urban areas, for example, the outside air may contain suspended particulate matter from vehicles, construction activities, and road dust. Opening windows can then bring such pollutants inside, especially during peak hours.

Air purifiers, on the other hand, purify indoor air. Rather than relying on air exchange between indoors and outdoors, they work by continuously filtering the indoor air using an air filter capable of trapping fine particles. A HEPA air purifier, for example, focuses on microscopic pollutants that traditional ventilation systems cannot remove.

Myth 2: Indoor Plants Can Replace an Air Purifier

While plants are beneficial for indoor spaces, their air-cleaning abilities are exaggerated. Laboratory tests showing the removal of pollutants by plants are conducted in highly controlled conditions that are different from the actual home environment.    

Generally, the number of plants needed to make a visible difference in particulate matter would be impractical. More importantly, plants do not have the ability to actively capture airborne particles such as dust or smoke. Air filtration systems, particularly those with HEPA filters, are designed to specifically address particle capture on a large scale.

Myth 3: Air Purifiers Are Only Needed in Winter or Smog Season

Winter pollution makes the problem more visible, but airborne pollutants exist year-round. Indoor air pollutants are present throughout the year due to sources such as cooking emissions, cleaning agents, fabric materials, and outdoor infiltration. Along with all this, dust is always there in most homes because of climatic, urban, and activity factors.

Air purification can help maintain a stable indoor particulate concentration, as opposed to only functioning during times of apparent pollution. Using air purifiers as seasonal products can result in confusing and misleading performance.

Myth 4: One Air Purifier Can Clean the Entire Home

Air purifier effectiveness is based on airflow dynamics, not merely the size of the air purifier. Every purifier is designed for a specific room size, guided by its Clean Air Delivery Rate (CADR), which measures how efficiently filtered air is circulated within a defined area. This is why a room air purifier performs optimally only within its intended coverage zone.

The presence of walls, doorways, furniture, and room shape differences obstructs the free flow of air from one room to another, making it impossible to clean the air beyond the coverage area of the air purifier.

For instance, if a small air purifier is used in the living room, it does not mean that the bedrooms will also enjoy the same level of air purification. Even if the doors are open, air circulation between the rooms is not consistent and is too slow to clean the air effectively.  

A portable air purifier works most effectively when used within its intended space. In larger homes, a room-specific placement approach typically delivers more predictable and consistent results than relying on a single centralised unit.

Myth 5: All Air Purifiers Work the Same

Air purifiers may look similar, but they are not built the same. Differences in room coverage, airflow design, and overall capacity can significantly affect performance.

Filtration technology also plays a role. Some models are designed with HEPA filters to capture fine airborne particles such as dust and allergens, while others focus more on reducing odours or certain gases with carbon filtration technology. This means air purifier’s effectiveness can vary depending on what type of indoor pollutants are present.

In addition, metrics such as Clean Air Delivery Rate (CADR) determine how quickly a purifier can clean the air in a specific room size.

Assuming that all purifiers deliver identical results can lead to selecting a model that does not match the room’s requirements or the intended use.

Myth 6: Air Purifiers Are Only for People with Health Issues

Indoor air quality influences comfort, sleep, and daily living conditions beyond clinical health considerations. Dust, allergens, and fine particles affect environments irrespective of visible symptoms.

Preventive air management and maintaining cleaner indoor air are increasingly relevant in urban living areas. Air purifiers are designed for environmental optimisation, not exclusively for medical scenarios.

Conclusion

Misconceptions about air purifiers often stem from intuitive but incomplete reasoning. Ventilation, plants, and seasonal awareness are beneficial practices, yet they do not replace mechanical filtration when addressing microscopic airborne particles.

Understanding how filtration systems function, what pollutants they target, and how placement affects performance allows households to make evidence-based decisions. When comparing solutions, factors such as room size coverage, CADR, and filtration design become more meaningful than general assumptions.  

For instance, models such as the Eureka Forbes Smart 500 Surround 360° Air Purifier and the Eureka Forbes 355 Surround 360° Air Purifier are designed for different room sizes and usage scenarios, illustrating why purifier selection should align with actual indoor conditions rather than one-size-fits-all expectations.  

The Smart 500 Surround 360° Air Purifier is typically suited for larger rooms or living areas, where higher airflow and wider circulation are required.  

• Its 360° air intake technology allows the purifier to draw in air from all directions, improving purification efficiency across the entire room rather than only the immediate surrounding space.
• This design helps ensure consistent air circulation, making it effective in spaces where pollutants such as dust, allergens, and fine particles tend to accumulate.

On the other hand, the 355 Surround 360° Air Purifier is generally more suitable for medium-sized rooms such as bedrooms, study areas, or home offices.  

• While more compact, it still incorporates a surround filtration approach that captures airborne contaminants efficiently.  
• Its design focuses on balanced purification performance and energy efficiency, which makes it practical for spaces where the purifier may run for extended periods.

Both models emphasise the importance of proper placement and room compatibility. Even a powerful purifier may not perform optimally if used in a space that exceeds its recommended coverage area. Selecting the best air purifier for the home is ultimately guided by measurable suitability and placement strategy.

Frequently Asked Questions

1. Will one air purifier device cover my whole house if I leave doors open?

    

   Generally, no. Air purifiers are designed for specific room sizes based on airflow and filtration rates. The design of homes restricts the effectiveness of a single air purifier for the entire house.

    

2. Does an air purifier help reduce the dust settling on my furniture?

    

   Yes. By capturing airborne particles before they deposit on surfaces, purifiers can reduce dust accumulation over time. They complement regular cleaning rather than replace it.

    

3. How do I know if the air is actually getting cleaner with the air purifier?

    

   Many devices include sensors that estimate particulate concentration and display real-time indicators. These readings help users observe changes as the air filter continuously processes indoor air.