Do you have a furnace at home? Furnaces are very useful components that are a part of many homes’ heating, ventilation, and air conditioning (HVAC) systems. They’re crucial in maintaining indoor temperatures at their most optimum levels to ensure a conducive living space.
And did you know that modern-day furnaces are composed of many parts that work together to ensure the unit is functioning at efficient and productive levels? One of the most important parts of the furnace that plays a big role in the overall performance of the unit is the furnace filters.
As a homeowner, you need to have knowledge of what furnace filters are, what are the different types of furnace filters available, and how you can replace your furnace’s filters if the need arises. If you want to learn about those, keep on reading.
Furnace Filters: What Are They
As mentioned earlier, furnace filters are important and indispensable to a furnace unit’s overall performance and functionality. They’re designed to prevent floating dirt, dust, and other airborne particles from entering your at-home furnace unit and later on circulating throughout your home’s central HVAC system. If not for furnace filters, you may need to hire a professional duct cleaner to deal with accumulated dirt and grime.
Why Are Furnace Filters Important
It can also be said that furnace filters’ other roles include protecting your residential HVAC system from damage and boosting your indoor air quality.
Although they’re usually looked over, furnace filters offer big benefits to homeowners like you. They’re anything but minor components to your at-home furnace unit.
How’s that? A great filter can enhance your residential HVAC system’s overall performance and efficiency, prolong its recommended lifespan, lower down your electricity bills, and many more. On the other hand, an inappropriately installed and/or dirty furnace filter can lead to poor air indoor quality, skyrocketing energy consumption, damage to your furnace which will require expensive repairs, and many more.
What Are The Different Types Of Furnace Filters Available
Keep in mind the following dear homeowner: knowing the different types of furnace filters and understanding each one is the first step in picking what’s the best fit for your home’s furnace.
1. Fiberglass Furnace Filters
For beginners, fiberglass filters are the most primary kind of furnace filter in the market. And they’re the least expensive option.
Fiberglass furnace filters are composed of multiple layers of fiberglass fibers stacked on top of each other and they typically have a low MERV rating (Minimum Efficiency Reporting Value).
You’d want to have fiberglass furnace filters if you want to trap larger air particles like dust and lint. Take note that they’re not as effective in warding off smaller-sized particles.
2. Pleated Furnace Filters
What are pleated furnace filters? They’re a type of furnace filter that’s generally made from either polyester or cotton paper material. Pleated filters are also known to possess higher MERV ratings than fiberglass furnace filters.
The pleats in pleated furnace filters provide a larger surface area for trapping particles, which is said to make them more efficient than other furnace filter types. Pleated furnace filters are said to be effective in capturing mold spores, pet dander, mold spores, some types of bacteria, and many more.
3. Electrostatic Furnace Filters
Electrostatic filters use self-charging fibers to attract and trap particles. Most electrostatic furnace filters available in the market come in both washable and disposable options.
When should you choose electrostatic filters? They’re a great option if you have pets or smokers at home because they can capture fine particles.
Even with a high-quality filter, some issues—like persistent short cycling, strange odors, or a sudden drop in heat output—suggest a problem beyond routine filter care. Rather than guessing, homeowners should consider a professional inspection so the root cause can be identified and addressed safely. Licensed technicians can determine whether the issue is filter-related or requires broader service, and can perform timely furnace repair or maintenance to restore efficiency. Pairing regular filter changes with periodic professional checks helps prevent costly breakdowns and keeps a system running smoothly.4. High-Efficiency Particulate Air (HEPA) Filters
Did you know that HEPA filters are the tried-and-tested and generally accepted standard for air filtration?
In fact, it’s said that HEPA filters are so great at doing their job that they can trap almost a hundred percent of particles much smaller than human hair. While not all HVAC systems can accommodate HEPA filters due to their high resistance to airflow, they are an excellent choice for those with severe allergies or respiratory issues.
5. Reusable/Washable Furnace Filters
Washable filters are eco-friendly and cost-effective over time. But they require regular cleaning and maintenance. These filters can last for several years if properly cared for, yet they often have a lower MERV rating compared to other types of furnace filters.
When Should You Replace Your Furnace’s Filters And How Should You Go For It
Knowing when to replace your furnace filter is important. keep in mind the following pointers to help you determine when’s the right time to replace your furnace’s filters.
- Check the filter manufacturer’s recommendations. They typically advise homeowners to replace their furnace filters monthly to once or twice a year depending on the kind of furnace filter.
- Do monthly checks on your furnace’s filters. Replace damaged filters immediately.
- Change your furnace’s filters as the seasons change. This is to address airborne particulates that can trigger allergies.
Know that you have working knowledge of when should you replace your filters, check out the following points below for useful filter replacement pointers.
- Make sure that your furnace and HVAC system are off before proceeding.
- Next, look for where the furnace filters are located.
- Then, you can proceed with removing the old and/or damaged filter.
- Proceed to insert the new filter. Finally, you can turn back your furnace and HVAC on.
To Conclude
Understanding furnace filters and what are the replacement guidelines of each one is key to a functional and efficient at-home furnace and HVAC system. To enjoy a more comfortable and healthier living space, keep in mind the points mentioned above. And if you have further concerns about furnace filters, you can reach out to professional furnace companies.
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