As the spring season starts, pollens become a headache for those with allergies particularly, the pollen allergy. In Summers, the situation is no different as the heat and humidity of summer season provide favourable circumstances for the growth of mould and mildew which once again become a source of allergies. The fall season comes with its own types of allergies and so is true for the winter when the home is totally packed and the stale air keeps circulating in the indoor. This means that allergies can appear any time of the year. In order to combat them, one of the most used and most suggested ways is the use of air duct filters. But the question is; do they really help? If yes, why do people still have to go through a lot of trouble as almost all homeowners have some kind of duct filters already installed? This blog will answer this question.



- Regular Air Filters - What they do and what they don't 

A lot of homeowners think that using regular air filters is a wonderful solution to keep dust and other pollutants away and make the indoor environment desirable. The truth is, these duct filters are designed to protect the system, not the homeowners. So what they do is they only trap large particles and dust that may harm the unit. A lot of pollutants especially the microscopic pollutants and allergens still pass through the filter and keep circulating in the indoor. So if your primary concern is treating allergies, you need special filters.

- Paper filters are unable to trap allergens 

You can't purchase the cheapest paper filter available and expect it to give the efficiency of a proper air cleaner. The ordinary paper filters let the allergens slip through them. Specially designed High-Efficiency Particulate (HEPA) Air Filters should be used in order to maintain a good indoor air quality. Else, the unit remains safe but the family members have to face IAQ related problems.

- HEPA Filters vary in efficiency 

There are several types of HEPA Filters divided on the value of their efficiency. The value ranges from 1-13 usually. Some very high-quality filters may have a higher value. These filters are efficient depending on their value so you can choose for your home and needs whatever MERV value filter you are in need of. But beware to not choose a very high rating filter if you have an outdated system. Not all filters are designed to suit all systems.

- More efficient filters mean more cleaning 

You may already have heard that a filter needs replacement once every three months. This does not apply to all filters. The better the filter, the more pollutants it will trap and the sooner it will get dirty. So with a better filter in use, be even more regular in cleaning/replacing it.

- There's more to the story 

Changing/replacing the filters or using high-efficiency filters is not the whole story; there's more to it. In order to maintain a desirable indoor environment and to keep the HVAC units operating with optimal efficiency, it is required to perform regular maintenance of the entire system. Only changing or upgrading filters won't help.

So the next time you are out for a filter purchase, make sure you know what to purchase and also practice all the right practices later on. All of this combined will create a better indoor air quality and will protect the system from losing its efficiency.

Leave a Reply