New Jersey winters can be unpredictable. Unseasonably mild and sunny one day, frigid and snowing the next. And because we don’t know what mother nature has in store for the rest of the season, it’s important to make sure your furnace continues to run as effectively and efficiently as possible. One of the simplest ways to do just that is to change your furnace filter. Although it’s often overlooked, a clean filter plays a critical role in maintaining air quality, energy efficiency, and the longevity of your furnace.

In this post, we’ll explore why changing your furnace filter is so important, how often it should be replaced, and how to tell when it’s time for a change.

Why Change Your Furnace Filter

Improved Air Quality

Over time, dust, dirt and other airborne contaminants can accumulate on the filter, which can cause the filter to become clogged. When this happens, your furnace will struggle to pull in air, forcing it to work harder. A dirty filter not only reduces airflow but can also cause dust and allergens to recirculate into your living spaces. This is especially problematic for those with allergies or asthma.

Increased Energy Efficiency

When your furnace filter is dirty or clogged, the system has to work harder to pull in air. This reduced airflow forces the furnace to use more energy to heat your home, leading to higher utility bills. By replacing the filter regularly, you’re ensuring that your furnace runs as efficiently as possible, potentially saving you money on heating costs.

Extended Furnace Lifespan

A clogged filter can cause the furnace to overheat or fail to circulate air properly, which can lead to costly repairs or even system failure. Regular filter replacements help maintain proper airflow, ensuring that your furnace runs smoothly and lasts longer.

Preventing Furnace Damage

Clogged filters can also lead to more severe issues, like a frozen evaporator coil or heat exchanger damage. These problems can require expensive repairs and may even necessitate a full system replacement. Replacing the filter regularly is a proactive step in preventing such damage and maintaining the overall health of your furnace.

How Often Should You Replace Your Furnace Filter?

The frequency with which you should replace your furnace filter depends on several factors, such as the type of filter, how often you use your furnace, and whether you have pets or live in an area with high levels of dust or allergens.

Standard 1-inch fiberglass filters should typically be replaced every one to three months depending on usage. If you have pets, you may need to replace your filter more frequently, as pet hair and dander can clog the filter faster. Additionally, if you notice a lot of dust on your furnishings, it may be a sign to replace the filter more frequently.

Is It Time to Replace My Furnace Filter?

• The most straightforward way to tell if it’s time to change your furnace filter is to visually inspect it. A clean filter will typically appear white or light-colored. If the filter looks visibly dirty, dusty, or clogged, it’s time for a replacement.
• If you notice that your home isn’t heating as efficiently as it should, or if you’re feeling weak airflow from your vents, a dirty filter might be to blame.
• If you’ve been noticing more dust settling around your home or if you, your family members, or pets are experiencing more allergy symptoms, it could be a sign that the furnace filter is not effectively trapping dust and allergens.
• A furnace that is running continuously, making strange noises, or cycling on and off frequently might indicate that it’s having to work harder than usual due to a clogged filter. If your system isn’t functioning as it should, it’s time to check the filter.

Changing your furnace filter is one of the easiest and most cost-effective ways to ensure your heating system runs efficiently throughout the season. If it has been a year or more since your furnace was professionally inspected, or if your heating system is not functioning properly, it’s time to contact C&D Cooling & Heating. By staying on top of regular maintenance and addressing minor issues before they become costly repairs, you can keep your furnace—and your home—comfortable all winter long.