When it comes to changing the air filter of your central heating and air conditioning system, you should always do it at least once a month.
That is what I was told by my local heat and a/c specialist.
I really did not know anything about this until I was told. However, before hand I would always change the air filter of my central heating and air conditioning system once every three months. While it was ok, I noticed a huge difference in the air quality within my home when I started changing the air filter of my central heating and air conditioning system once a month. It seems that when I change my air filter once a month it feels so much better in terms of my allergies. I do not even have to turn on my portable air purification system in the bedroom as often once I started changing the air filter of my central heating and air conditioning system once a month. This is why I am telling you all this. I would like everyone to know that by changing the air filter of your central heating and air conditioning system once a month you can highly improve the air quality in your home. I hope that this information about air filters and your heating and air conditioning system can be helpful as it has been to me when it comes to changing the air filter! You always can learn something new about your central heating and air conditioning system when you look for more information about it.