How to Change Your Furnace Filter


Spring is a great time to break out the cleaning supplies and give your home a good once-over. While you’re at it, don’t forget to change your furnace filter! A lot of people don’t realize how important it is to regularly change their furnace filter, but it really does make a difference in the efficiency and lifespan of your furnace. Not sure how to change your furnace filter? No problem! This blog post will walk you through the process step-by-step.


Step One: Locate Your Furnace Filter

The first step is locating your furnace filter. Depending on the model of furnace you have, it may be located in different places. Consult your owner’s manual or take a look around the inside and outside of your furnace until you find the panel that covers the filter. Once you have located the panel, unscrew it and set it aside.


Step Two: Remove the Old Filter

Carefully remove the old filter from its spot inside the furnace. Depending on how long it has been since you last changed your filter, it may be quite dirty. If so, be sure to dispose of it properly—don’t just leave it lying around! Once you have removed the old filter, take a look at it to see which way the arrows are pointing. You’ll want to install the new filter with the arrows pointing in the same direction so that air can flow through properly.

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Step Three: Install the New Filter

Now it’s time to install the new filter. Again, be sure that the arrows are pointing in the right direction before you insert them into place. Once the new filter is installed, screw on the panel that covers it and give yourself a pat on the back—you’ve just completed a simple but essential task that will help keep your furnace running smoothly for years to come!


How to check if your filter needs to be replaced:


If you’re not sure whether or not your filter needs to be replaced, there’s an easy way to check. Just hold it up to a light source—if you can see through it, it’s time for a new one! However, if the filter looks clean and you can’t see any light shining through, it’s probably still good and doesn’t need to be replaced just yet.


How often should you replace your filter?


The general rule of thumb is to replace your furnace filter every three months. However, if you have pets or live in a dusty area, you may need to replace them more frequently. Conversely, if neither of those applies to you and you don’t use your furnace very often, you may be able to get away with replacing it only once or twice a year.


As you can see, changing your furnace filter is a quick and easy process that anyone can do. So don’t wait—if it’s been a while since you last changed yours, now is the perfect time to do it! Your furnace will thank you.



Changing your furnace filter may not be the most exciting task on your spring cleaning checklist, but it’s definitely one of the most important. By taking just a few minutes to perform this simple maintenance task, you can lengthen the lifespan of your furnace and keep it running more efficiently. And who doesn’t want that?