Gas Furnace Air Filter Location: How to Change Your HVAC Filter

December 17, 2023

Changing your gas furnace air filter is essential to maintaining the efficiency of your HVAC (heating, ventilation, and air conditioning) system and ensuring clean air circulation in your home. Understanding where the gas furnace air filter location is and how to change it can save you money, safeguard your health, and extend the life of your furnace.

At Blue Dot, we are committed to providing expert furnace maintenance tips and services to keep your home comfortable and your heating system running smoothly. Whether you’re a DIY enthusiast or looking for professional assistance, we are here to guide you through the process and offer our expertise whenever you need it. By following our comprehensive guide, you’ll learn how to locate, inspect, and change your HVAC filter to keep your furnace operating efficiently. If you run into any problems, don’t hesitate to reach out to us at (410) 204-2662 for assistance.

Do All Gas Furnaces Have Filters?

If you are wondering if a gas furnace has a filter, the short answer is “Usually.” Most gas furnaces have filters, but there are exceptions. Furnace filters are essential for trapping dust, dirt, and other particles, preventing them from entering your HVAC system and circulating throughout your home. In a nutshell, the filter helps maintain good indoor air quality and protects the furnace components from damage.

While it’s common for gas furnaces to have filters, some older models or specialized systems might not have traditional filters that require regular changing. These units often have built-in filtration systems that need different types of maintenance.

However, if your furnace has a changeable filter, regularly inspecting and changing it is an essential maintenance task. Regularly replacing the filter ensures optimal airflow, reducing the strain on your furnace, which can also help save energy. When filters become clogged with debris, your system has to work harder to pull air through, leading to higher energy bills and potential damage over time. If it’s been a long time since you changed your filter, or you suspect your furnace may be damaged, give us a call at (410) 204-2662 or schedule a service online for expert assistance.

Where is the Air Filter on My Gas Furnace?

Finding your gas furnace air filter location is the first step in this crucial furnace maintenance task. The air filter is typically located in one of these areas:

Return air duct: The most common location for the air filter is behind the return air duct, near where the duct connects to the furnace. This is usually a large grille or vent that pulls air from your home into the HVAC system.
Blower compartment: Another common place to find the air filter is in the blower compartment on the furnace itself. To access it, you may need to remove a panel or open a door on the furnace. Look for a slot or a compartment door where the filter slides in.
Side of furnace: On some units, the air filter may be located in a slot on the side of the furnace. This slot is often marked and easily accessible.

When searching for the gas furnace air filter location, look for a removable cover or panel that can be unscrewed or unlatched. Sometimes, there will be a small label or indicator near the filter compartment. If your furnace has a user manual, it will often provide detailed instructions on locating and changing the filter.

Why Can’t I Find My Furnace Filter?

If you’re having trouble finding your furnace filter, here are some quick troubleshooting tips:

Consult the manual: Your furnace’s user manual often has diagrams showing the filter location.
Check common areas: Look behind the return air duct, inside the blower compartment, or on the side of the furnace. Remember, the gas furnace air filter location can vary, so checking all possible spots is important.

Call Blue Dot: If you still cannot find the furnace filter, call Blue Dot at (410) 204-2662 to schedule a service and have a professional technician assist you.

How Do I Change the Filter in My Gas Furnace?

Follow these simple steps to change your gas furnace filter. You can also view the video above for a visual guide.

Step 1: Locate your indoor furnace or air handler

First, find your indoor furnace or air handler. These units are usually in the basement, attic, or utility closet.

Step 2: Remove dirty filter

Once you’ve located the furnace, identify the filter near the return air duct, blower compartment, or side panel. Some filters are easy to see, while others might have protective covers or be located in the ceiling. Remove the dirty filter, and be sure to double-check the filter size before replacing it to ensure the new one fits properly.

Step 3: Insert the clean filter

When you have your new filter, make sure to insert it in the correct HVAC air filter direction. The filter will have an arrow indicating the airflow direction; ensure this air filter points toward the furnace or air handler. Slide the clean filter into place and secure any covers or panels.

All done! By following these steps, you can ensure your gas furnace runs efficiently and maintains good air quality in your home.

Does Changing a Furnace Filter Save Energy?

Yes, changing a furnace filter can save energy. A clean filter allows your furnace to operate more efficiently by ensuring proper airflow. When the filter is clogged, the furnace has to work harder to circulate air, increasing energy consumption. Regularly replacing your furnace filter reduces strain on the system, lowers energy bills, and extends the life of your furnace.

Trust Blue Dot for All Your HVAC Needs

Ensure your furnace runs efficiently with Blue Dot’s expert services. We offer comprehensive heating repair, regular air conditioning and heating system checks, and more to keep your home comfortable year-round. Don’t wait. Schedule your service with Blue Dot today online or by contacting us at (410) 204-2662.

For even more savings, be sure to check out our specials and our Pro Service Plan. Need financing options? We’ve got you covered.