What Is Furnace Filter: Exploring the Difference Between Furnace, AC, and Air Filters

Ever wondered “what a furnace filter” is and how to maintain a comfortable living environment while also keeping energy costs low and breathing cleaner air?

The answer lies in understanding and managing your furnace filter. Whether winter or summer in Boise, ID, a well-maintained furnace filter is the unsung hero of your heating and cooling system, ensuring optimal performance and improved air quality.

In this comprehensive guide, we will explore the ins and outs of furnace filters, their differences with AC filters, the various types available, and how to select and replace them. Discover how these seemingly simple components can significantly impact energy efficiency and the air you breathe.

Key Takeaways

• Furnace filters protect HVAC components and improve air quality, with varying maintenance needs and MERV ratings.
• Comparing furnace vs AC filters reveals key differences in location, lifespan, filtration efficiency & cost.
• Regular filter replacement improves energy efficiency & indoor air quality while extending the life of equipment, seek professional help for complex issues or abnormal smells.
• Do you live in or around Boise in the Treasure Valley and need help with your furnace, furnace filters, or air conditioning filter? Talk to the team here at Top Shelf Heating and Cooling!

Understanding Furnace Filters

Furnace filters, also known as air conditioning filters, play a significant role in your HVAC system by safeguarding the furnace and boosting indoor air quality. With the right filter and proper maintenance, your heating and cooling system can operate efficiently, saving you money on energy bills while also providing a healthy living environment.

When managing furnace filters, it’s crucial to avoid common mistakes such as choosing an incorrect size or type, failing to replace the filter on time, and installing it improperly. Neglecting these aspects can lead to poor performance, increased energy consumption, and potential damage to your HVAC system.

The Role of Furnace Filters

Furnace filters are typically installed between the HVAC unit and the return duct, capturing dust, dirt, and debris from the air circulating through your home. These filters not only protect your furnace’s components, such as the blower motor and coils but also improve indoor air quality by trapping airborne particles.

Some furnace filters, like reusable filters, can be washed and reused, making them environmentally friendly and cost-effective in the long run. However, they may not suit those with allergies and require thorough cleaning and drying before reinstallation.

How Furnace Filters Work

The function of furnace filters is to clean the air circulating in your HVAC system, avert contaminants from infiltrating the furnace, and enhance air cleanliness. There are two main types of furnace filters: pleated and non-pleated filters.

The efficiency of a furnace filter is indicated by its Minimum Efficiency Reporting Value (MERV) rating. Higher MERV ratings mean the filter is more efficient at trapping particles. Depending on the thickness, furnace filters can last from 1 to 12 months, with prices ranging from $15 to $25. You can purchase furnace filters at your local hardware store in Boise or you could also use Amazon.

Comparing Furnace Filters and AC Filters

Despite their different designations, furnace filters and AC filters perform the same task in the same air handler. Both types of filters are designed to protect your HVAC system and improve indoor air quality by trapping dust, debris, and allergens.

Even though furnace and AC filters have minor differences, their main function is virtually the same. Understanding these differences will help you make an informed decision when selecting and maintaining filters for your heating and cooling system.

Shared Functions

Both furnace and AC filters serve to protect the HVAC system by purifying the circulating air, barring contaminants from the furnace, and preserving the air cleanliness in your home. These filters, including the AC filter, are typically located in the air-handler of the heating and cooling system and need to be replaced or cleaned regularly to ensure optimal performance.

Regardless of whether you have a separate heating and cooling system or a central heating system, maintaining clean filters is crucial for the efficiency and longevity of your HVAC system.

Key Differences

Despite the similar function of furnace and AC filters, it’s important to consider certain distinctions, like:

• The filter’s location
• Its lifespan
• The level of filtration
• The cost

For instance, furnace filters generally need replacement every 3-6 months, while AC filters can last up to 12 months.

Additionally, filtration efficiency, as indicated by MERV ratings, can vary between furnace and AC filters. Pleated fiberglass AC filters typically have MERV ratings between 8-13 and cost between $6 to $50 apiece.

Types of Furnace Filters

Furnace filters are available in a broad range of materials, sizes, and designs, such as fiberglass, pleated, and washable filters. Each type of filter has unique features and benefits that cater to different needs and preferences.

Understanding the different types of furnace filters and their respective advantages can help you make an informed decision when selecting the right filter for your home.

Pleated vs. Non-Pleated Filters

Pleated furnace filters are made of several layers of cotton or plastic material folded together to form a larger surface area, allowing them to capture more airborne particles than non-pleated filters, which consist of a single layer of material and are less effective at trapping particles.

Non-pleated filters can effectively capture larger particles but may require more frequent replacement to prevent build-up and maintain HVAC performance. In contrast, pleated filters can capture:

• dust
• mites
• odors
• bacteria

Offering superior filtration and a longer lifespan.

MERV Ratings and Filter Efficiency

MERV (Minimum Efficiency Reporting Value) ratings indicate the efficiency of a furnace filter in capturing particles of various sizes, with higher ratings showing greater efficiency. For instance, a MERV 4 is the lowest acceptable rating, while homeowners are generally recommended to use MERV 7 or MERV 8 filters for better filtration without restricting airflow.

For those with allergies or respiratory issues, it’s recommended to upgrade to a filter with a MERV rating of 11 or 12 to reduce airborne allergens in the home. However, it’s important to consult with your HVAC installer to ensure that a higher MERV rating doesn’t compromise the efficiency of your furnace.

Selecting and Replacing Your Furnace Filter

The selection of an appropriate furnace filter and its regular replacement is pivotal for achieving the best HVAC performance and sustaining a healthful living environment. Factors to consider when selecting a furnace filter include size, MERV rating, and filter type.

Routine upkeep, including cleaning or changing filters, is necessary to circumvent potential issues and related costs like diminished efficiency, escalated energy bills, and degraded air quality.

Determining Filter Size

To determine the correct size of your furnace filter, follow these steps:

1. Turn off the system and remove the current filter from its slot.
2. The size should be labeled on the filter’s frame or indicated by its dimensions (e.g., 18x20x1).
3. Measure the old filter to the nearest 1/8 inch using a steel measuring tape to ensure accuracy.

Replacement Frequency and Tips

Although replacement frequency varies depending on filter type and thickness, it’s generally recommended to check and replace pleated or high-efficiency furnace filters every three months for optimal performance.

To install a new filter, turn off the furnace or HVAC system, remove the old filter, and slide a new, clean filter into the slot. For reusable filters, clean and dry them before reinstallation.

Benefits of Regular Furnace Filter Maintenance

Regular furnace filter maintenance offers numerous benefits, such as increased energy efficiency, improved indoor air quality, and prolonged equipment lifespan. Reduced strain on the furnace and air conditioner due to clean filters can translate into lower heating and cooling bills, making regular maintenance a cost-effective solution.

Furthermore, frequent air filter maintenance contributes to healthier indoor air quality, particularly for those with allergies and respiratory issues, by preventing the circulation of dust, debris, and allergens in the air. Investing in high-quality air filters can make a significant difference in maintaining a clean and healthy environment.

Energy Efficiency

Routine cleaning or substitution of furnace filters can alleviate pressure on your furnace, leading to enhanced energy efficiency and reduced heating and cooling expenses.

A well-maintained filter allows for better air flow and decreased energy consumption, ultimately saving you money in the long run.

Healthier Indoor Air Quality

Well-maintained furnace filters promote healthier indoor air quality by successfully capturing dust, debris, and allergens, halting their circulation within your home. Regular filter maintenance is especially beneficial for those with allergies or respiratory issues, as it helps reduce the presence of airborne irritants and promotes a cleaner living environment.

When to Seek Professional Help

Though regular filter upkeep is vital, certain situations may require professional assistance to guarantee the best HVAC performance and tackle furnace filter-related problems. Seeking expert assistance can help maintain your HVAC system and prevent further complications and additional costs.

Recognizing when to call a professional can save you time and money while also ensuring that your HVAC system remains efficient and your indoor air quality remains healthy.

Troubleshooting Common Furnace Filter Issues

Routine inspection and filter replacement or cleaning can resolve typical furnace filter issues like dust, bacteria, and other particle accumulation. However, if you experience abnormal smells coming from the furnace, black or foul-smelling filters, or if you need guidance on how often to change the furnace filter, it’s best to seek professional help.

Engaging an HVAC professional can guarantee the correct installation, servicing, and replacement of your furnace filter, thereby enhancing the efficiency and performance of your HVAC system.

Finding a Trusted HVAC Professional

Finding a trustworthy HVAC specialist is key to the correct maintenance, repair, and replacement of your furnace filters. You can find a dependable HVAC professional by asking for referrals from friends and family, checking online reviews, and verifying the qualifications of potential HVAC experts.

Selecting a reputable HVAC professional guarantees proper installation and maintenance of your furnace filter, resulting in better efficiency, performance, and air quality in your home.

The Verdict on Furnace Filters –

Understanding and managing your furnace filter is key to maintaining a comfortable living environment, improving energy efficiency, and enjoying cleaner air.

By selecting the right filter, performing regular maintenance, and seeking professional help when necessary, you can optimize your heating and cooling system’s performance while fostering a healthier home. Let’s Don’t underestimate the power of a well-maintained furnace filter – it could be the secret to a more efficient and comfortable home.

Frequently Asked Questions

What is the difference between air filter and furnace filter?

Air filters and furnace filters are the same thing; they are used in your HVAC system to keep your home’s air clean. The only difference is that one is used for heating and one for cooling, but they both serve the same purpose.

How often should you change the furnace filter?

Furnace filters should be changed every 1 to 3 months for 1- to 2-inch filters, 6 to 9 months for 3- to 4-inch filters and 9 to 12 months for 5- to 6-inch filters.

Do you really need a furnace filter?

Using a furnace filter is essential to protecting your system and health, as it traps contaminants from circulating in the air, prevents damage and clogs to the system, and keeps dust and debris away from inner components. Failing to use a furnace filter can have long-term consequences for both your system and your family’s health.

Where is my furnace filter?

You can usually find your furnace filter near the blower compartment, which is accessible through a metal door or hatch on the lower half of the furnace. It may also be in a sliding compartment by the air handler component or on a rack installed on the furnace’s side.

What is the main purpose of a furnace filter?

The main purpose of a furnace filter is to protect the furnace and improve indoor air quality by trapping dust, debris, and allergens. Similar to air filters in your home, a furnace filter helps the air in your home and improves the efficiency of your HVAC systems.

What areas do Top Shelf Heating do HVAC services?

We proudly serve all of the Treasure Valley, including Boise, Garden City, Caldwell, Meridian, Nampa, Eagle, and more! You can simply reach out below to schedule a visit!