How to Improve Indoor Air Quality


From the health implications to the impact on our lifestyle, indoor air quality plays a significant role in our daily lives. This article offers a comprehensive guide to understanding this crucial issue. We will cover everything from identifying common pollution sources to exploring methods of air quality measurement, mitigation practices, and even delve into how nature can help improve environment inside our homes. Whether you're an office dweller or homemaker, improving indoor air quality is of essence and this piece enlightens why and how.


Indoor Air Quality, commonly known as IAQ, refers to the quality of air within our surroundings directly influencing occupants' health and comfort. An often overlooked aspect, the importance of good indoor air quality cannot be overstated, considering we spend nearly 90% of our time indoors - at home, offices, or other built environments.

Our indoor air can be heavily polluted with invisible enemies such as dust mites, volatile organic compounds (VOCs), mould spores and others leading to an array of health issues from mild discomfort like allergies to serious illnesses including asthma and other respiratory diseases.

Undoubtedly having a profound effect on human health, indoor air pollution can also detrimentally impact cognitive function. A study found that high levels of CO2 and VOCs significantly lowered decision-making performance among participants. Therefore, understanding indoor air quality is not only crucial for maintaining physical wellbeing but mental health too.

Maintaining indoor air quality is not just about being healthy - it's about living well and having a productive life. Parallel to drinking clean water and eating hygienic food, breathing quality indoor air should form part of your lifestyle’s basic necessities.


To tackle indoor air pollution, we first need to understand its common sources. Depending on the living conditions, harmful contaminants can be natural or synthetic. One such source is dust which contains particles of dirt, skin cells, fabric fibres, bacteria and more, acting as a universal irritant.

Moulds are another issue that thrive in humid environments like bathrooms or damp basements. Apart from being unsightly, they release microscopic spores causing allergies and respiratory issues.

Then comes the Volatile Organic Compounds (VOCs), a term describing chemicals released as gases from a host of household items ranging from paints, varnishes to cleaning agents and even cosmetics.

While these are the neutral common forms of pollutants, some can stem directly from our lifestyle choices. Second-hand smoke or animal dander for pet owners greatly affect indoor air quality too. Other factors include certain building materials releasing contaminants overtime or external factors such as pollen entering through windows or HVAC systems. Understanding these elements paves the way towards improved indoor air quality.


Exposure to poor indoor air quality can have a string of immediate and long-term health effects. In many cases, individuals might experience symptoms shortly after exposure, such as irritation of the eyes, nose, and throat, headaches, dizziness, or fatigue. These are usually short-term effects that often subside upon reducing the exposure.

However, prolonged exposure to indoor air pollutants can lead to serious health conditions. Respiratory diseases, heart disease, and even cancer can be traced back to poor indoor air quality. It has been linked with increased asthma attacks in people who have the condition.

Moreover, it's not just physical health at stake here. Poor quality of indoor air also affects cognitive functions. Research shows that high levels of common indoor pollutants like carbon dioxide and VOCs can reduce people's ability to make decisions and perform complex tasks.

The risks associated with these issues stress the need for regular monitoring of indoor environments and taking necessary actions to control the sources of pollutants. This is especially important considering how much time we typically spend indoors.


Quantifying indoor air quality is a critical step in understanding and improving our living environments. So, how exactly can you measure it? Well, there are several methods available.

Professionals use advanced devices that determine the levels of different pollutants present in the air. Carbon dioxide monitors, for instance, indicate inadequate ventilation while dust monitors detect dust particles of various sizes floating in the environment, providing data on potential allergens.

When it comes to Volatile Organic Compounds (VOCs), certain sensors respond to a wide range of compounds to provide a total VOC level. Separate tests are needed for particular gases like radon or carbon monoxide, both colorless, odorless and dangerous at high levels.

There are also home testing kits available on the market. They are easy-to-use tools providing quick insights into your environment's conditions by detecting common pollutants like mould spores or asbestos.

Lastly, hiring a professional to conduct a detailed IAQ assessment might be advantageous as it yields more accurate results and can identify less obvious sources efficiently.


Improving indoor air quality doesn't always require extreme measures. Here are some simple tips that can make a big difference:
  1. Open windows and doors to let fresh air in and circulate regularly. This straightforward step can significantly reduce indoor pollution levels.
  2. Regular vacuuming goes a long way to control dust particles, especially for homes with carpets where allergens easily accumulate.
  3. Use paints, varnishes and cleaning agents labeled as low-VOC or VOC-free when renovating or maintaining your space.
  4. Incorporate plants into your home décor. Many species like snake plant or spider plant have well-documented air purifying properties.
  5. Install carbon monoxide detectors to warn of dangerously high levels of this colorless, odorless gas caused by faulty appliances or heating systems.
  6. Keep humidity levels in check to prevent mould growth. Using dehumidifiers or air conditioners during humid months can greatly help.
  7. Opt for hard surface flooring instead of wall-to-wall carpeting which holds onto pollutants longer.
  8. No smoking indoors - it’s one of the surest ways to improve indoor air quality drastically.


The quest for cleaner indoor air might well lead you to your local nursery. Certain houseplants have the ability to absorb harmful toxins released by common household goods, acting as natural air filters.

Take peace lilies, for instance. They can help reduce levels of benzene and formaldehyde, common Volatile Organic Compounds found in many household cleaners and synthetic materials. Aloe Vera plants are not just great for topical health applications, they also filter out benzene and formaldehyde effectively.

Other green heroes include English Ivy, known to remove mould spores in the air thus improving allergy symptoms. Snake Plants, efficient oxygen producers even at night, filter out a host of nasty chemicals while boosting oxygen supply.

Incorporating these plants into your living habitats does more than simply beautify them - they aid us in achieving healthier indoor environments. Keep in mind though that while plants help improve air quality, they should be used as partners to other steps taken towards overall indoor air improvement.


Once you've taken steps to improve your indoor air quality, it's important to maintain those conditions. Here are some best practices:
  1. Regular cleaning: Frequently dusting and vacuuming helps limit the accumulation of pollutants. Use microfiber cloths for dusting as they collect particles effectively.
  2. Routine ventilation: Opening windows and doors daily allows fresh air to replace stagnant indoor air, lowering pollutant concentrations.
  3. Regular maintenance of HVAC systems: Air filters should be changed according to the manufacturer’s instructions, usually every 3 months.
  4. Mindful product use: Only use chemicals indoors when necessary and always follow safety guidelines on the label.
  5. Manage Humidity: Indoor relative humidity should be kept below 50% to discourage mould growth.
  6. Carbon Monoxide Monitors: Have these installed and perform routine checks for early detection.
  7. Be mindful of outdoor allergens: If pollen count is high or poor air quality is reported, keep window and doors closed.
Remember, maintaining good air quality isn't a one-and-done deal. It requires continuous attention and effort in order to truly foster a healthier living environment.


In essence, safeguarding and improving indoor air quality forms an integral part of our well-being. Recognizing potential pollutants, understanding their impact on health and implementing practical measures like regular ventilation, mindful product use and harnessing nature’s purifiers are pathways to breathing healthier indoors. Let's prioritize air purity just as we value clean water and food.