Many people are now rushing air purifiers either from store or online marketplaces like amazon, eBay, etc. Since there are a lot of these purifiers on the market, people tend to get the cheapest one possible. No matter the price, there are some important functions or features of air purifiers you must look out for.

So in this article, we are going to cover 6 very important features of a good quality air purifier. A good air purifier should at least have 5 of these features. These functions or features are;

  • Coverage Capacity
  • Hyper-captive Filtration System
  • Eco Mode
  • Sleep Mode
  • Air Quality Indicator
  • Filter Alert

Now let’s take a look at each of these features to see how important and beneficial they are.

1. Coverage Capacity

A good air purifier should have a high coverage capacity to ensure that it can effectively purify the air in a large room or area. The coverage capacity of an air purifier is determined by the size of the filter, the amount of air it can purify per hour, and the type of filter it uses. The larger the filter and the more air it can purify, the higher the coverage capacity.

Most people live in an apartment of around 350 square feet or a family home of about 1050 square feet. So if you live in an apartment, you should at least get an air purifier with a coverage capacity of 400 square feet. Likewise you should get at least a 1100 square feet coverage capacity if you have a family home.

2. Hyper-captive Filtration System

The Hyper-captive Filtration System is a unique air purification system found in most top air purifiers on the market. It utilizes a combination of different technologies to capture and remove airborne pollutants, allergens, and other particles from the air. The system consists of a pre-filter, a HEPA filter, and an activated carbon filter.

The pre-filter works to remove larger particles, such as dust and pet dander, from the air. This helps to reduce the amount of particles that can reach the other filters, which increases the efficiency of the air purifier.

The HEPA filter is the main component of the Hyper-captive Filtration System. It is designed to capture and remove particles as small as 0.3 microns from the air. This particles includes pollen, mold spores, bacteria, and other pollutants.

The activated carbon filter is the final component in the Hyper-captive Filtration System. This filter works to remove odors, smoke, and other volatile organic compounds (VOCs) from the air. It is a highly effective filter that can help to improve air quality in your home.

The Hyper-captive Filtration System is an excellent choice for those looking for a powerful air purifier that can help to improve the air quality in their home. It is a reliable and efficient system that can help to reduce the number of airborne pollutants and allergens in your home.

3. Eco Mode

The Eco Mode is designed to maximize energy efficiency while still providing a high level of air purification. It works by using a combination of filtration, ozone reduction, and ionization to capture airborne particles, allergens, and other pollutants. The Eco Mode feature also helps to reduce noise levels and improve indoor air quality.

This feature is also designed to reduce energy consumption by using a lower fan speed, which is quieter and more efficient. It also uses fewer filters, which helps to reduce the cost of maintenance. Additionally, the Eco Mode helps to conserve energy by automatically adjusting the air purifier’s settings to the lowest power level. This only occurs when the air purifier detects lesser particles in the air. But once the air quality begin deteriorating again, the eco mode automatically turns off.

The Eco Mode also helps to reduce the amount of ozone generated by the air purifier. Ozone is a naturally occurring gas that can be hazardous to human health if inhaled in high concentrations. By reducing the amount of ozone generated by the air purifier, the Eco Mode helps to improve indoor air quality and reduce the risk of health problems associated with ozone.

Another benefit of this feature is that, it helps in reducing the amount of energy used by the air purifier. This helps to lower energy bills and reduce the environmental impact of the air purifier.

4. Sleep Mode

The Sleep Mode feature is a great way to ensure that your air purifier is running at its optimum level without disrupting your sleep. This mode allows the air purifier to automatically adjust its fan speed and noise level to a minimum setting, so it won’t be too loud or too powerful while you’re trying to sleep.

Additionally, the air purifier will continue to filter the air in your bedroom, ensuring that you’ll be breathing in clean air while you sleep. The Sleep Mode feature is especially beneficial for those who suffer from allergies or asthma, as it helps to reduce the amount of allergens and irritants in the air. It’s also great for those who live in areas with high levels of air pollution.

A good quality air purifier will turn off when it enters sleep mode. This is important for quality sleep because the lights can be distracting and disrupt your natural sleep cycle. Additionally, having the lights off can help you achieve a darker sleeping environment, which is beneficial for getting a better-quality sleep.

5. Air Quality Indicator

The Air Quality Indicator allows you to monitor the air quality in your home or office. This feature can be extremely useful if you suffer from allergies or asthma. It can help you to identify any potential air quality issues that could be affecting your health.

The Air Quality Indicator typically uses a color-coded system to indicate the level of air quality. For example, green may indicate good air quality, yellow may indicate moderate air quality, and red may indicate poor air quality. It is important to note that the colors used may vary from one air purifier to another. When you get an air purifier, check the guide hand book to know the colors it uses.

Some air purifiers also include additional features, such as a particle sensor, that can detect the presence of airborne particles. This can be helpful if you are sensitive to airborne allergens, as you can be alerted to the presence of these particles before they become a problem.

When shopping for an air purifier, it is important to look for one that has an Air Quality Indicator feature. This can help you to monitor your air quality and ensure that it is always at a safe level.

6. Filter Alert

The Filter Alert feature allows the air purifier to alert you when it is time to replace the air filter. This feature ensures that you always stay informed on when to replace the filter. By regularly replacing your air filter, you can ensure that your air purifier is always working at its peak performance.

The Filter Alert feature will usually beep or flash a light when it is time to replace the filter. This alert will typically be based on the amount of time the filter has been in use, or the amount of air that has been filtered. Depending on the type of air purifier you have, changing the air filter is usually after 3 to 6 months of use. Of course, it also depends on other variables like; how bad the air quality is? and how often you are using the air purifier.

Replacing your air filter regularly is essential for keeping your air purifier running efficiently and effectively. Not only will this keep your air free of pollutants, but it will also extend the life of your air purifier. With the Filter Alert feature, you can be sure that you are always breathing in the freshest, cleanest air possible.


In conclusion, an air purifier with these features is essential for ensuring that you are breathing quality air. These features are designed to help you monitor and improve the air quality in your home or office. At the same time, you also conserve energy and reduce your energy bills.

Investing in a quality air purifier with these features is a great way to ensure that you and your family are breathing in the cleanest air possible. If you are still trying to decide on the air purifier to buy, you might want to check this list of the best air purifiers for home and office.