The general rule of thumb is to replace an oven filter located behind a return vent or in the oven itself at least every 90 days. This is just a general recommendation, however, and there are several factors that can shorten or extend the time between furnace filter replacements. Fiberglass air filters are the more affordable option, but they are not as effective at capturing dust and particles in the air. As such, they usually need to be changed every 30 days or less.
If you answer yes to this question, you should change your filter every 6 weeks to ensure the best indoor air quality. The oven is part of the HVAC air filtration system, responsible for absorbing cold air and heating it before it reaches the rest of the house through the air controller. If you don't change your oven filter regularly, you may end up with an oven that doesn't work as efficiently and is likely to have a shorter lifespan. A Honeywell oven filter will have the same filter replacement recommendations as standard filters. HVAC systems may not have heating components and therefore do not need an oven filter. Generally speaking, HVAC oven filters don't need to be changed as regularly during the winter months compared to the summer months.
Additionally, depending on the season, you may need to change the filter more during warmer months, as animals shed more hair when it's hot. If you don't change the filter, impurities in the air will circulate through your house and you will breathe them in. However, experts recommend changing it once every 30 days if the air filter is made of fiberglass filters, which are of relatively poor quality. The filter is placed in a shared air controller where it cleans the air before diverting it to the air conditioning unit or oven. One of the most important things you can do on your own to take good care of your air conditioning system is to simply change your air filter regularly.