In general, most air filter manufacturers and HVAC companies recommend changing the air filter every 90 days or 3 months. The simplest way to find the right air filter for your home is to locate the one that's already installed. On average, you should replace a fiberglass air filter every 30 days, while a pleated air filter can last three to six months before needing to be changed. If the filter isn't replaced, it can reduce the lifespan of your boiler or air conditioner, so it's important to include air filter replacement in your regular home maintenance routine. People with allergies or respiratory conditions, such as asthma and COPD, may be more sensitive to dust and debris, so a dirty air filter can have a greater impact on their health.
External factors, such as high pollen levels, nearby construction, or home renovation, can also reduce the lifespan of an air filter. Compared to other home improvement projects, changing air filters is a quick and easy process that can be completed in less than an hour. If you live in a smaller house, your air conditioners and ovens must pump less air with the same temperature change, which could mean fewer filter changes. Another essential home maintenance job that every homeowner should know about is changing the oven air filter. If you're installing the air filter in a vacation home, cabin, or other property that isn't used often, you can usually wait a bit longer to replace the filter. When the filter becomes clogged with dirt and debris, it prevents air from passing through properly.
If you notice that your heating and cooling bills are gradually increasing, it may be a sign that your system's efficiency is starting to decline due to a dirty air filter. Air filters trap pet hair, dust, and other irritating particles so that the air conditioning system returns fresh, clean air to your home.
