Why Replacing Furnace Filters Matters at the Change of Season
When the weather turns cold, your furnace becomes one of the most important systems in your home. Keeping it healthy and efficient starts with one simple habit: replacing the furnace filter.
Why the Furnace Filter Matters
The filter traps dust, dirt, pollen, pet dander, and other airborne particles before they can circulate through your home—or worse, clog up your heating system. Left unchanged, a dirty filter restricts airflow, forcing your furnace to work harder. That means higher utility bills, uneven heating, and potential system damage.
How Often Should Filters Be Changed?
Mechanical Extremes’ Harold Wilkes explains that the answer depends on where you live and how much dust is in the air. “In rural areas with open fields, for example, airborne particles are more abundant. In those cases, a filter may need to be changed every month.” Furnace filter replacement frequency varies, but a common recommendation is every 1-3 months for standard 1-inch filters. Thicker filters (3-4 inches) can last 6-9 months, while even thicker filters (5-6 inches) may last 9-12 months.
Fortunately, many Carrier furnaces installed by Mechanical Extremes make this easier. Smart thermostat alerts notify you automatically when it’s time for a new filter. Other units can be set to prompt you based on a calendar schedule.
Which Filter Is Right?
Here’s where things get a little more complicated—not all filters are created equal.
Filters are measured by their MERV rating (Minimum Efficiency Reporting Value), which indicates how well they capture particles. Higher MERV numbers trap smaller particles—but that doesn’t mean higher is always better.
“If the MERV rating is too high, it can actually suffocate the furnace,” Harold warns. This can reduce efficiency and even damage the system.
Always check your manufacturer’s specifications before buying. The right balance ensures clean air and proper airflow.
Three Benefits of Staying on Top of Filter Changes
- Lower energy costs thanks to improved airflow.
- Cleaner indoor air with fewer allergens and dust particles.
- Longer furnace life by reducing wear and tear on motors and blowers.
Count on Mechanical Extremes
Replacing a filter may seem minor, but it’s the foundation of furnace health and home comfort. Mechanical Extremes can help you select the right filter for your system, replace it, and provide a full furnace inspection before winter hits.
Breathe easier, save money, and protect your system this season—schedule a tune-up with Mechanical Extremes today (517) 812-2484.
