Changing your furnace filter might seem like a small task, but it’s one of the easiest and most important things you can do to maintain your HVAC system and improve your indoor air quality. A clean filter keeps the air in your home free of dust, allergens, and pet dander, while also helping your furnace run more efficiently and last longer.
Here’s a simple step-by-step guide to changing your furnace filter:
1. Turn Off the Furnace
For safety, switch off the furnace before doing any maintenance. You can do this via the thermostat or the power switch near the unit.
2. Locate the Filter
Most filters are found where the return air duct meets the furnace or inside the blower compartment. It should slide out easily.
3. Check the Filter Size
Before buying a new filter, check the old one for its size, which is usually printed on the side (e.g., 16x25x1).
4. Replace the Filter
Insert the new filter, making sure the arrow on the frame points in the direction of airflow—usually toward the furnace.
5. Turn the Furnace Back On
Once the new filter is in place, turn your system back on, and you’re good to go.
Experts recommend checking your filter every 1–3 months. A clogged filter can lead to higher energy bills and even damage your system over time. This quick task can save you money and keep your home healthier.
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