In general, most air filter manufacturers and HVAC companies recommend changing the air filter every 90 days or 3 months. That may change depending on the location of your home (e.g. EJ. dry and dusty climates), if you have pets and the age of your system and equipment.
The ideal is to change your air filter every three months, however, there are certain factors to consider when determining when to change an old filter. 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 pick up dirt and dust, so there's no need to change them as often.
Thomas %26 Galbraith Heating, Cooling and Plumbing of Ohio recommends replacing filters that are less than 2 inches thick every 30 to 90 days. Three- or 4-inch filters can last 6 to 9 months, and filters up to 6 inches thick can be replaced once a year. A general rule of thumb for pleated air filters (such as those manufactured by FilterBuy) is to replace the filter every 90 days. As the filter traps more dirt, dust and allergens from the air, the efficiency of the filter decreases.
Find out below if you should replace the filter more often. It's a general recommendation to change your home's air filter every 30 days when using less expensive fiberglass filters. Furnaces and air conditioners in smaller homes need to pump less air for the same amount of temperature change, which can mean less frequent filter changes. One of the most important things you can do on your own to take good care of your HVAC system is to simply change your air filter on a regular basis.
Even if no one in the house is allergic, it is advisable to change the oven filter frequently, as often as every 30 days if you have several pets, to keep the oven running efficiently. If there is a visible layer of dirt that covers most of the filter surface and that is thick enough to hide the filter material itself, it is a sign that the filter has been in the HVAC system for too long. A number of factors need to be considered when deciding how often to change an oven filter, and many filter manufacturers recommend how often your product should be replaced. If there is no smoker or pets in your home, and your filter is the 1 filter that is commonly sold with a MERV rating of 4, you should be able to wait up to 90 days before changing it.
The HVAC air filter will basically trap airborne contaminants to prevent them from being recirculated throughout the house. Therefore, in addition to causing breakdowns, it can also increase energy bills because the HVAC system has to work overtime. If you live in a “smaller house,” your air conditioners and ovens need to pump less air for the same amount of temperature change, which could mean fewer filter changes. However, the smaller the appliance used for cooling, the small space usually comes with smaller filters, so you may need to change the filter as often as a filter in a larger home.
Regardless of the HVAC system you have, each unit needs a properly tuned quality filter to keep your indoor air quality clean and your unit running at peak efficiency. Changing the air filters in your HVAC system is an essential practice that ensures that clean air circulates throughout the house. However, these appliances are often built with smaller filters and, therefore, may need to be changed as often as a filter in a larger home. During a remodeling project, change the oven filter every 30 days, or even more often, to prevent construction-related dust from circulating around the home.