Your furnace is always there for you. It works hard day in and day out, so the least we can do is return the favor by taking care of it. One of the easiest and most important ways you can show your furnace some love is by regularly replacing its filter. But don’t worry — it’s not as complicated as it might seem.
In this blog, we'll guide you through the step-by-step process of how to change a furnace filter.
Why You Should Change Your Furnace Filter
A furnace filter might not appear like much — just a simple piece of material that traps dust and other debris — but it plays a huge role in keeping your heating and cooling system running smoothly. When the filter is clean, air flows freely through your system, allowing your furnace to heat your home efficiently. But a dirty filter? That’s another story.
When a filter gets clogged with dirt, pet hair, and other debris, it restricts airflow, causing your furnace to work harder than it needs to. This makes your heating system less efficient (which can raise your energy bills) and can also shorten its lifespan. In the worst-case scenario, a clogged filter can even lead to overheating, potentially requiring a costly emergency heating repair.
That’s why knowing how often you should change your home furnace filter is so important. Typically, experts recommend changing it every one to three months, depending on factors like the type of filter, your home’s air quality, and if you have pets.
How to Change a Furnace Filter
So, how exactly do you go about changing a furnace filter? It’s easier than you might think. Here’s a straightforward guide:
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Turn Off the Furnace
First things first: do you have to turn off the furnace to change the filter? Yes, you do. For your safety and to prevent damage to your furnace, always make sure to switch off the power before attempting any maintenance. Look for a power switch near the furnace or turn it off at the circuit breaker.
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Locate the Furnace Air Filter
Now, you may be asking, "Where is my furnace air filter located?” Most HVAC filters are located either in the blower compartment (right next to the blower chamber) or behind the furnace’s door panel. If you’re having trouble finding it, consult your furnace’s manual, or give Gillece Services a call, and we’d be happy to help.
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Remove the Old Filter
Once you’ve located the filter, simply slide out the old furnace filter. Be careful, as it may be full of dust, dirt, and other debris. If the filter looks especially dirty or clogged, it’s definitely time for a replacement.
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Determine the Correct Filter Size
Before you buy a replacement filter, check the filter size on the old one. It’s usually printed on the side of the cardboard frame. Getting the right size is vital for proper airflow and filtration.
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Insert the New Filter
Take your new furnace filter and slide it into place, following the arrows on the frame to make sure it’s facing the right direction (the arrows should point toward the furnace). This step is necessary, as it allows air to flow through the filter correctly.
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Turn the Furnace Back On
Once the new filter is installed, turn your furnace back on, and you’re all set! You’ve successfully completed your guide to replacing a furnace filter.
How Often Should You Change Your Home Furnace Filter?
Now that you know how to change a furnace filter, the next big question is: how often should you change your home furnace filter? In most cases, it depends on a few factors:
- Type of filter: Basic disposable filters should be changed every one to three months. High-efficiency filters (like those with a high MERV rating) can last a bit longer, but it’s still a good idea to check them monthly.
- Pets: If you have furry friends, pet hair and dander can clog your filter faster, so you may need to replace it more often — about every one to three months.
- Allergies or asthma: If someone in your household suffers from allergies, consider changing the filter more frequently to improve the air quality in your home.
- Air quality: If you live in an area with high pollen counts or air pollutants, you’ll likely need to change the filter more often.
Why Furnace Air Filters Are So Important
Furnace filters aren’t just there to keep your system running smoothly; they also play a key role in maintaining your home’s air quality. They help trap dust, allergens, and other particles, preventing them from circulating through your home and into your lungs. A clean air filter means cleaner air for you and your family, which is especially important if anyone has respiratory issues or allergies.
Changing your furnace air filter regularly can also save you money. A clogged filter forces your furnace to work harder, leading to higher energy bills and a higher likelihood of needing repairs. Keeping up with this simple maintenance task can help you avoid an expensive furnace tune-up or, worse — an unexpected breakdown in the middle of winter.
Signs You Need to Change Your Furnace Filter
Sometimes, it’s obvious when a filter needs to be replaced, but other times, it’s not so clear. Here are some common signs that it’s time to change your furnace filter:
- You notice an increase in dust around your house.
- The furnace is running more often than usual.
- Your energy bills are creeping up.
- The air in your home feels stuffy or less clean.
- You have more allergy symptoms, like sneezing or itchy eyes.
If you’ve noticed any of these signs, it’s a good idea to check your filter.
Keep Your Furnace Running With Gillece Services!
While any homeowner can learn how to change a furnace filter, keeping your entire HVAC system in top shape might require professional help. At Gillece Services, we’re here to help keep your heating and cooling system running smoothly all year long.
Our experienced team can handle everything from regular maintenance to comprehensive repair. We’ve been Pittsburgh’s trusted heating and cooling experts since 1980. We’d love to assist you, whether you need a simple furnace tune-up or an emergency heating repair in Pittsburgh, PA, or one of the surrounding areas. Contact us today to schedule an appointment!