The P. Gagnon & Son Blog

How To Change A Furnace Filter

Save money and protect your furnace

furnace filter Regularly changing the air filter of your furnace is a simple and quick task that should not be overlooked. It ensures optimal performance and efficiency, promoting a healthier and more comfortable environment for you and your loved ones. Don’t underestimate the impact of this small yet crucial maintenance routine.

Create a monthly reminder on your smartphone or mark it on the family calendar to regularly inspect and replace your air filter when necessary. If you have furry friends like dogs, cats, or other pets, it’s recommended to do this more frequently.

Here’s how to change your air filter.

Before anything else, it is important to determine the correct size of the air filter needed. You can refer to your furnace’s manual for this information, or simply check the dimensions of the existing filter. Typically, the size is indicated by three numbers representing the width, length, and thickness. For instance, if the air filter is labeled as 16x25x1, it means that the filter is 16 inches wide, 25 inches long, and 1 inch thick.

After acquiring your air filter (consider getting multiple for easy replacement), switch off the furnace. Locate the filter’s position on your specific model. Typically, filters are found in the blower compartment or integrated into the metal ductwork preceding the blowing fan.

Remove the old air filter, taking note of the arrow on the filter frame indicating the correct air flow direction. When inserting the new filter, ensure it is oriented the same way. For added convenience, consider using a permanent marker to label the air flow direction on the furnace housing or ductwork near the filter.

After removing the used filter, promptly place it into a trash bag to prevent the dispersal of dust and dirt on the floor.

Why a clean air filter is important

A clean air filter does a lot for your furnace, your home, your comfort, and your bank account. Here are some of the benefits.

Improved energy efficiency: A dirty or clogged air filter places additional strain on your furnace, forcing it to work harder in order to heat your home. This increased workload results in higher energy consumption, leading to elevated energy costs. On the other hand, a clean air filter, coupled with routine professional maintenance, allows your furnace to operate at optimal efficiency, ensuring optimal performance and energy efficiency.

Protecting your furnace: A dirty or clogged air filter is one of the most common causes of furnace breakdowns. As mentioned earlier, when filters are not changed regularly, the furnace has to work harder, leading to increased wear on its parts and ultimately resulting in a breakdown. These breakdowns can be quite expensive, not to mention the fact that they shorten the lifespan of the furnace, forcing you to purchase a new one earlier than necessary. Air filters are much, much cheaper than furnace repairs or replacement.

Improved indoor air quality: An HVAC filter plays a crucial role in controlling the circulation of airborne dust, dirt, and allergens within your home. However, its effectiveness heavily relies on its cleanliness. Regularly checking and replacing your air filter becomes even more vital if anyone in your household suffers from allergies, asthma, or respiratory conditions like COPD. And here’s an added bonus: with less dust and dirt circulating, keeping your home clean becomes a breeze!

With expert furnace installation and service from P. Gagnon & Son, you can keep your home warm and comfortable this winter. Get a FREE estimate today!