The basic consensus among HVAC professionals is that you should replace your oven filter every 90 days or every three months. However, that depends on the thickness of the filter. Thicker filters have more room to collect dirt and dust, so there's no need to change them as often. For 3- and 4-inch filters, plan a replacement approximately every six to nine months.
If you have larger 5- or 6-inch filters, you'll need to change them every nine to 12 months. If you are allergic to dust or pet dander, you should change your air filters more regularly than every 90 days. Try replacing filters after 60 days, and if your allergies continue to increase, consider changing them every month or changing them to pleated filters. In general, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days or 3 months.
This may change depending on the location of your home (e.g. dry and dusty climates), if you have pets, and the age of your system and equipment. If you have pets in your home, you should consider changing the filter every 60 days or 2 months, and for households with multiple pets or people with allergies or respiratory conditions, we recommend changing the filter every 20 to 45 days. Usually, vacation homes or vacant homes that don't have much use can expect to change filters every 9-12 months.
The general consensus is that the more you use your home, the more you need to change the air filter. In most cases, you should replace the filter at least every three months, even in summer. If you can't seem to remember to do it, a good rule of thumb is to change your oven filter every time the seasons change. I checked the filter and found that it was covered with dust, so I replaced it with a new filter and the indoor air is much fresher now.
As a general rule, you'll want to replace your home's pleated air filters and heating filters every 90 days. Clogged filters not only negatively affect the air quality in a home, but also force the oven to work harder to draw air into the system and thus shorten the life of the oven. If you're a pet owner, you'll want to change your air filter every 2 months, especially when winter turns to spring and summer turns to fall. It's a general recommendation to change your home's air filter every 30 days when using less expensive fiberglass filters.
A clean filter is necessary to prevent dust from passing through the HVAC system, where it can accumulate in the internal coils of the air conditioner and reduce the efficiency of the unit. You will no longer be able to filter the air properly, allowing dust and contaminants to enter the HVAC system. If there is an asthmatic or allergic person in your home, they are much more sensitive to airborne particles than those who don't. To give you a starting point of how often you are looking to change oven filters, size matters.
Even though almost everyone knows about oven filters, they are still one of the most neglected furnace maintenance tasks. When oven filters are forgotten or omitted to change, several problems arise in Cincinnati homes. If you live in a larger house, that means there's a lot more air moving through the house and the oven filter. On the other hand, if you use your HVAC system almost constantly, you'll need to change the filter every few weeks (especially if you use fiberglass filters).
It's not used to purify the air you breathe, but to protect the sensitive components of your HVAC system.