Summer is just around the corner, which means it’s time to prepare your home’s air conditioning system for the scorching days ahead. While there are several steps homeowners can take to ensure their A/C runs efficiently, there’s one simple yet critical task that often gets overlooked—changing your A/C air filter.

Think of your A/C air filter like sunscreen for your HVAC system. Without it, your system is vulnerable to dirt, allergens, and overall wear and tear. But don’t worry, we’re here to guide you through everything you need to know about air filters and why swapping them out now will save you from headaches (and higher bills) later.

Why Changing Your A/C Filter Matters

Your air filter does more than you might think. Its job is to capture air pollutants like dust, pet dander, pollen, and even mold spores before they enter your home’s air circulation. When the filter is clean, your system works efficiently, providing cool and clean air to every corner of your home.

However, when the filter is clogged, it causes a domino effect of issues:

Higher energy bills: A clogged filter forces your A/C to work harder, using more energy and driving up costs.

Reduced cooling efficiency: Dirty filters can restrict airflow, making it harder for your system to cool your home effectively.

Poor indoor air quality: With a clogged filter, airborne allergens and pollutants can circulate freely, impacting your family’s comfort and health.

Shortened system lifespan: Overworked systems are prone to breakdowns and costly repairs.

For something so quick and affordable to replace, the impact of a clean air filter is massive.

How Often Should You Change Your Air Filter?

The frequency of air filter changes depends on several factors, including the type of filter you use and your home environment. Here’s a general guideline:

Standard fiberglass filters should be replaced every 1-2 months.

Higher-efficiency pleated filters can last about 3 months.

Homes with pets or residents with allergies may need filter changes more frequently due to higher levels of pet hair and allergens.

During peak A/C seasons, like summer, it’s a good idea to check and change the filter every month—especially if your unit runs non-stop.

If you’re unsure, a quick glance at your filter will tell you if it’s time for a change. A clean filter is usually white or light-colored, while a dirty one will appear gray or dusty.

How to Change Your Air Filter in 3 Easy Steps

The good news is that you don’t need to be an HVAC expert to swap out your filter—this is a task any homeowner can handle. Here’s how to do it:

Step 1: Find Your Air Filter

Air filters are typically located in one of three places:

Behind a return air vent in your wall or ceiling

Inside the blower compartment of your furnace or air handler

Within a slot near your HVAC unit

If you’re unsure, check your system’s user manual or give us a quick call—we’re happy to help you locate it!

Step 2: Choose the Right Replacement Filter

Make sure you have the correct filter size. Each filter has dimensions printed on its frame (e.g., 16x20x1). You’ll also want to consider the filter’s MERV rating, which determines its ability to filter out smaller particles. For most homes, a MERV rating of 8-11 strikes the right balance between filtration efficiency and airflow.

Step 3: Swap It Out

Turn off your A/C system before handling the filter (safety first!). Remove the old filter, and slide the new one into place with the arrow pointing in the direction of airflow—usually towards the HVAC unit.

That’s it! You’ve just improved your home’s air quality and set your A/C up for success.

When Should You Call in the Experts?

Replacing your air filter is a great DIY project, but if you’re noticing other issues with your A/C—like weak airflow, strange noises, or inconsistent cooling—it’s time to call in the pros. Our expert HVAC technicians can inspect your system, address any underlying issues, and ensure your home stays cool all summer long.

Keep Your Home Comfortable Year-Round

Changing your A/C air filter is one of the simplest ways to maintain a comfortable, energy-efficient home. But if you’re looking for even more peace of mind, consider joining our Comfort Club. Members receive annual system checkups, priority service, and exclusive discounts—all designed to keep your HVAC system running smoothly.

Don’t wait until the heatwave hits—schedule your next A/C service with us today and experience the difference of a clean, high-performing system.

​Need help or have questions? Contact Simmons One Hour for expert advice and reliable HVAC care. Together, we’ll keep your home comfortably cool, no matter how high the mercury rises.