February 20, 2025
Your HVAC system works hard to keep your home comfortable year-round, but one small mistake can cause big problems: neglecting your air filter. A clogged or improperly installed filter can reduce airflow, overwork your furnace, and even shorten the lifespan of your system.
Many homeowners in Syracuse and Central New York don’t realize just how dirty their filters are until a professional shows them the buildup. That’s why we’re breaking down the most common HVAC filter mistakes and how to avoid them so you can keep your system running efficiently and avoid costly repairs.
1. Not Changing the Filter Regularly
The biggest mistake homeowners make? Forgetting to change their HVAC filter.
Over time, dust, pet hair, and other debris accumulate, clogging the filter and restricting airflow. A dirty filter forces your system to work harder, leading to:
- Higher energy bills
- Uneven heating and cooling
- Increased wear and tear on your HVAC system
How to Avoid It: Check your filter monthly and replace it at least every 60-90 days. If you have pets or allergies, you may need to change it even more often.
2. Using the Wrong Filter Size
An improperly sized filter can leave gaps around the edges, allowing unfiltered air to circulate through your system. This can lead to dust buildup in your ducts and reduce indoor air quality.
How to Avoid It: Always check your HVAC system’s manual or look at your current filter’s dimensions before purchasing a replacement. If you’re unsure, our team at Heat Wiser can help you find the right fit.
3. Installing the Filter Backward
It’s easy to overlook, but installing a filter the wrong way reduces its effectiveness. Filters are designed with fibers that trap particles efficiently in one direction. If installed incorrectly, airflow is restricted, and contaminants can pass through.
How to Avoid It: Look for the arrow on the side of the filter– it should always point toward the furnace or air handler.
4. Choosing the Wrong Filter Type
Not all filters are created equal. While basic fiberglass filters are inexpensive, they don’t capture smaller particles like dust mites, pollen, or pet dander. On the other hand, high-MERV filters may be too restrictive for some HVAC systems, reducing airflow.
How to Avoid It: Choose a filter that balances efficiency and airflow. If you’re unsure, ask a professional for recommendations based on your system and indoor air quality needs.
5. Ignoring Filter Maintenance During High-Use Seasons
During peak heating and cooling seasons, your HVAC system runs more frequently, which means your filter gets dirty faster. If you forget to check and replace it, you risk reducing your system’s efficiency when you need it most.
How to Avoid It: Set a reminder to check your filter before summer and winter start. This small step can prevent strain on your system and keep your home comfortable.
Keep Your HVAC System Running Smoothly
Your HVAC filter plays a crucial role in maintaining your system’s efficiency and indoor air quality. By avoiding these common mistakes, you can extend the life of your system, lower your energy bills, and breathe easier in your home.
At Heat Wiser Heating and Air Conditioning, we’ve been serving Syracuse and surrounding areas for over 17 years. Whether you need HVAC maintenance, repairs, or a new system installation, our expert team is here to help.
