Common Misconceptions About Furnace Filter Changes

One of the most persistent myths in home heating maintenance is that you must replace your furnace filter every single month, no exceptions. At Reliable Heating & Cooling, we’re here to set the record straight about this costly misconception that’s affecting homeowners across O’Fallon, Saint Peters, and the greater Saint Charles area.

The Real Story Behind Filter Replacement

The truth is, the frequency of filter replacement depends on several factors:

• Home occupancy levels
• Number of pets
• Local air quality
• Filter type and quality
• Season and HVAC usage

High-quality pleated filters can often last up to 3-6 months, while basic fiberglass filters might need monthly replacement. For many households in Lake Saint Louis and Wentzville, changing the filter every 60-90 days is perfectly adequate.

How to Know When It’s Really Time

Instead of blindly following a calendar-based schedule, we recommend:

1. Visual inspection monthly
2. Checking for reduced airflow
3. Monitoring energy bills for sudden increases
4. Looking for excess dust around vents

Remember, over-changing filters isn’t just wasteful – it’s unnecessary spending that doesn’t improve your system’s performance. Trust your local experts at Reliable Heating & Cooling to guide you in maintaining your furnace efficiently and effectively.

The Bottom Line

While regular maintenance is crucial for your heating system, don’t fall for the one-size-fits-all monthly replacement rule. Every home’s needs are different, and we’re here to help you determine the right maintenance schedule for your specific situation.