The air filter in your Heating and Air Conditioning component is one of the most pressing parts of the system, however changing the air filters on the Heating and Air Conditioning component in your household can help the indoor air quality greatly. When the air filter is clean, air can transport through the system without trouble. The air needs to transport through the system really in order to correctly heat and cool your home. When the air filter is jammed and dirty, your component has to work harder to do the same job. When the air filter hasn’t been changed in a while, dirt and dust that has been built up can be distributed through the system. This dirt and dust can cause problems for the machine. Dirt and dust can cause mechanical failure and possibly lead to fires. Dirty and dusty HVAC duct can also cause indoor air quality concerns. Excess dirt and dust in the household cause you to have flu symptom related symptoms. I have terrible pollen irritations and I can tell when there is dirt and dust. I always sneeze and sniffle. I change my air filters every 3 weeks in order to make sure that the indoor air quality is the best. I thought about buying an air purification system, however the machines are pretty lavish. If I bought an air purification system for my entire house, it would cost quite a fortune. I could buy a smaller air purification system that is portable, however it’s a lot less currency to frequently change the air filter instead. The indoor air quality in my household is better than most, thanks to changing the air filter at correctly busy intervals.