Features of Air Purifiers That You Need to Keep in Mind
According to professionals in the air purifier industry, the most important characteristic of a good air purifier is its HEPA filter. The reason is that HEPA is the most effective solution against small airborne particles and allergens. Even if there are other types of filters that use similar technologies to achieve great effectiveness, there aren’t many alternatives for eliminating particles that have a size of 0.1 microns or smaller.
Maximum Air-Exchange Rate
The maximum air-exchange rate should be as high as possible. Every air filter allows the maximum quantity of air to go through it in one minute. Devices with a low maximum will allow less air to get through them, and cleaning the air will be slow.
Alert for filter change
There are filters that have an integrated counter and an alert system to notify the user when it is time for filter replacement. While many of these filters use a daily countdown, others monitor the filter’s current state.
Monitoring feature for air quality and sensor for dust
The quality of air can be automatically monitored, and air pollutants can be detected. With the information provided by the sensors, the device can automatically change the speed of air cleaning. Users then do not have to check or set the purifier, but there is a problem with this characteristic: less precise control of the level of noise and the consumption of energy. Despite this disadvantage, the feature is great in a space that is not occupied by people.
Multiple fan speeds
The purpose of having several speed settings for fans is better control of the airflow speed. The con of this characteristic is the higher noise level.
The use of a large capacity is justified in spaces with more square footage than average, but a large capacity device can be more expensive. Cheaper options can be more practical, and they are sufficient for small spaces.
Lower ownership costs
The ownership costs can depend a lot on the type of filter that a device has. A permanent filter does not require replacement as it can be cleaned or vacuumed. There is no need to pay for a new filter during its functional lifespan. The majority of air purifiers have changeable filters that only need replacement every few years. The more often you have to replace the filters, the more you will have to pay for the ownership of the device in the long term. On the other hand, there are no reliable washable HEPA filters certified by professional organizations.
Low ozone level or no ozone
Even if professionals in the industry say that ozone is great for eliminating gases and odors, too much ozone can do more harm than good. If you select an electronic air purifier, you must pay attention to its ozone emissions. It is probably better to get a device that has low emissions or no ozone at all. Ozone generators that are commercialized as air cleaners are not a good choice.