If you have a forced air HVAC system in your home you might think that the filter is improving your air quality, however, your air filter might not be improving the air quality. Air quality researchers have established that all that stuff floating though your air is bad for your health. Particles in your air that are 2.5 micrometers or smaller are the worst for your health, they can penetrate deeper into your lungs and end up in your blood stream. The best way to fight these particles is to filter the air but most homes only rely on the filter inside their HVAC system to do the filtering. Below you will find the 5 reasons that the filter in your HVAC system might not be helping your indoor air quality.
- No Filter!
This one seems like a no brainer but if you don’t have a filter installed there is not much filtration happening. I know it seems strange, but it happens! Sometimes a filter will get removed because it is in a difficult spot to reach, like a crawlspace. Sometimes you take it out and mean to replace it, but it slips your mind. All kinds of things can happen that lead to your filter being missing; this is not only harming the air quality in your home, but all that dirt and debris is getting into your duck work, blower, coil, and heat exchanger. Once all that dirt is inside your system it then spreads it throughout your home and causes strain on your system.
2. Bypassing the Filter
It doesn’t matter how nice the filter is if you don’t install it correctly. An incorrectly installed filter can let the air pass right by instead of through and this means your air is not being cleaned.
3. Not Enough Runtime
This one is not something a lot of people think about; your system might not be on long enough to make a difference. Your filter can only clean the air while your system is running, if your system is off then no air is being pulled through the filter. The best thing you can do to combat this is make sure the system you have in your home is the correct size and focus on minimizing the stuff that would need filtered out. You can do this by adding a standalone filter to your home or by Aerosealing your ductwork.
4. Not Changing or Using the Wrong Filter
Each system has different requirements when it comes to how often you should change your filter but if you don’t change it at all not only is the air not being filtered your system now has to work even harder to pull in air causing stress. The same thing can be said if you use the wrong filter, a basic filter is mostly designed to keep out pet hair, spiders, or lost socks. If you truly want to filter your air you need to invest in a MERV rated filter and the higher the number, the more stuff you filter out.
5. Filter in the Wrong Place
This one might also seem like a no brainer, but you would be surprised what we find when going to clean a HVAC system.
If you over come these obstacles, you should see an improvement in the air quality within your home.
Bailes, Allison. “Air Quality.” How Your House Works, 2012, pp. 99–105., doi:10.1002/9781118286074.ch5