How Often Should You Change Your Air Filter? (And Why It Matters)
Are You Forgetting Your Air Filter? Here’s Why It Matters
It’s one of the easiest things to overlook: your HVAC system’s air filter. Hidden behind a vent or panel, it quietly works day after day to keep your home’s air clean and your system running smoothly. But when that filter gets clogged, problems can quickly follow.
A dirty or neglected air filter can cause your system to work harder than it should, driving up your energy bills, reducing airflow, and circulating dust and allergens through your home. For many Green Bay homeowners, simply remembering to replace the filter on time can prevent costly breakdowns and improve comfort all year long.
What Does an Air Filter Actually Do?
Your HVAC air filter plays a crucial role in maintaining both air quality and system performance. Its main job is to trap airborne particles such as dust, pollen, pet dander, and other contaminants before they can enter your system.
When the filter is clean, air can flow freely through your heating and cooling equipment, allowing it to run efficiently while keeping your indoor air fresh. When it’s dirty or clogged, that airflow is restricted, forcing your HVAC system to strain. Over time, this can lead to overheating, frozen coils, poor air circulation, or even complete system failure.
Simply put, regular air filter replacement is one of the easiest and most effective ways to extend your system’s lifespan and promote a healthier living environment.
How Often Should You Change Your Air Filter? It Depends.
The short answer: every 1 to 3 months.
The longer answer: it depends on your home, your filter type, and your lifestyle.
Here’s a quick guide to help determine your ideal replacement schedule:
Filter type matters too.
Standard fiberglass filters usually last about 30 days.
Pleated filters (higher quality) can last 60–90 days.
HEPA filters or media filters may last up to 6 months but should still be inspected monthly for buildup.
If your HVAC system runs frequently, especially during hot summers or cold Wisconsin winters, it’s smart to check the filter monthly and replace it as soon as it appears dirty.
5 Signs It’s Time to Replace Your Air Filter
If you can’t remember when you last changed your filter, here are a few telltale signs that it’s overdue:
Reduced Airflow: Rooms feel warmer or cooler than usual, or you notice weak airflow from vents.
Dust Buildup: Dust accumulates quickly on surfaces or around vents despite regular cleaning.
Rising Energy Bills: Your HVAC system is working harder, driving up utility costs.
Musty or Stale Odors: Dirty filters can trap moisture and odors, affecting indoor air quality.
Increased Allergy Symptoms: Sneezing, coughing, or watery eyes may signal it’s time for a replacement.
Changing the filter regularly helps your system breathe easier and helps your family do the same.
Can You Change It Yourself or Should You Call a Pro?
In many cases, replacing an air filter is a simple DIY task. Most filters slide out easily, and your system’s manual will list the correct size and type.
However, if you’re unsure where your filter is located, which type you need, or you notice ongoing airflow issues, it’s best to call in the professionals.
At Richard’s Heating & Cooling, our technicians can inspect your system, ensure the correct filter fit, and check for any underlying issues that might be affecting performance. During a preventative maintenance service, we also evaluate the overall condition of your equipment, catching small problems before they turn into costly repairs.
Why Homeowners Trust Richard’s Heating & Cooling in De Pere and Green Bay
Green Bay homeowners count on Richard’s Heating & Cooling, Inc. for honest advice, dependable service, and lasting comfort solutions. As a family-owned, local HVAC company, we take pride in treating every home like our own.
Whether you need help with air filter replacement, seasonal maintenance, or full system service, our certified technicians are here to help. We offer transparent pricing, trusted recommendations, and expert care backed by years of experience.
Ask us about our Comfort Club Maintenance Plans, which include routine system inspections, filter checks, and priority scheduling—all designed to keep your system running efficiently year-round.
Visit our HVAC Services page to learn more.
Breathe Easier—Schedule Your Filter Replacement Today
Changing your air filter may seem like a small task, but it has a big impact on your comfort, air quality, and energy costs. Regular replacement not only protects your HVAC system but also helps your family breathe cleaner, healthier air.
Don’t wait until your system struggles. Stay ahead with help from Richard’s Heating & Cooling. Schedule your air filter replacement service today by calling 920-336-0431 or visiting our Contact Page.
Richard’s Heating & Cooling, Inc. – Your trusted HVAC partner for De Pere and Green Bay homes.
