Air filters are important components in any HVAC system as they play a crucial role in keeping the air clean and ensuring the proper functioning of the system. However, using the wrong size filter can have serious consequences for your HVAC system. This article will discuss how using the wrong size air filter can impact your HVAC system. This article is aimed at home owners for residential HVAC rather than businesses. Large businesses that have larger systems typically have a maintenance department that swaps these. If you have an HVAC system in your business and you have some doubts, this article is for your too!
Why Are Air Filters Important?
Air filters are used to trap dust, dirt, and other particles present in the air. They prevent these contaminants from entering the HVAC system and clogging up its components. A clean filter ensures that the system is running efficiently by allowing proper airflow and reducing strain on the equipment.
Risks of Using the Wrong Size Air Filter
Reduced Airflow
One of the main functions of an air filter is to trap dust, dirt, and other airborne particles from entering the HVAC system. This ensures that the air circulating in your home is clean and healthy. However, if you use a filter that is too small for your system, it can get clogged up quickly and reduce the airflow. This can put unnecessary strain on your HVAC system and result in higher energy bills.
Decreased Efficiency
When the airflow in your HVAC system is reduced, it also means that the system has to work harder to circulate air throughout your home. This can lead to decreased efficiency and result in the system using more energy than necessary. Over time, this can cause wear and tear on the system and potentially shorten its lifespan.
Poor Air Quality
As mentioned before, air filters are designed to collect dust and other particles, preventing them from entering the HVAC system. When you use a filter that is too small, it can easily get clogged up and fail to filter out these pollutants properly. This can cause you to have poor air quality in your home, which can be especially harmful for those with respiratory problems or allergies.
Risk of Damage
An HVAC system is a complex and delicate system, with various components working together to provide heating, cooling, and ventilation. When the airflow is restricted due to a small filter, it can cause strain on these components and potentially lead to damage. This can result in costly repairs or even the need for a full replacement of your HVAC system.
Types of Air Filters
Air filters vary in size, material, and thickness. It is important to choose the right size filter for your specific HVAC system to ensure optimal performance. Some common types of filters include:
Fiberglass Filters: These are the most basic and affordable filters available. They have a low MERV (Minimum Efficiency Reporting Value) rating and need to be replaced more frequently than other filters.
Pleated Filters: These are made of cotton or polyester and have a higher MERV rating than fiberglass filters. They can trap smaller particles and typically need to be replaced every three months.
HEPA Filters: High-Efficiency Particulate Air (HEPA) filters have the highest MERV rating and can capture up to 99.97% of particles in the air. They are typically used in medical facilities or for those with severe allergies or respiratory conditions.
How do I Know What Size Filter I Need?
The size of your air filter is based on the dimensions of your HVAC system. You can usually find this information in the owner’s manual or by checking the current filter in your system. If you are unsure, it is best to consult a professional HVAC technician who can help you determine the right size for your system.
How Often Should I Change My Air Filter?
The frequency of air filter changes depends on the type and size of your filter, as well as factors such as air quality and usage. It is recommended to replace air filters every 1-3 months for standard filters, while HEPA filters can last up to a year. However, if you have pets or live in an area with high levels of pollution or allergens, you may need to replace your filters more often.
What is a MERV Rating on an Air Filter?
MERV stands for Minimum Efficiency Reporting Value and measures the effectiveness of an air filter. The rating ranges from 1 to 20, with higher numbers indicating a more efficient filter. It is important to choose a filter with the appropriate MERV rating for your HVAC system to ensure optimal performance.
Many people think that you need to use an air filter with the highest MERV rating, but that is not always the case. The MERV rating is based on how well the air filter actually filters the air. The higher the MERV rating, the more particles the air filter catches. This sounds great in theory, but this can also mean there is more resistance for the air to flow through, leading to decreased airflow throughout your home.
Some HVAC systems are designed to work with these super-fine mesh filters, while others aren’t compatible. If you use an air filter with a high MERV rating and your system isn’t compatible, it can restrict airflow, reduce air quality, cause the system to run inefficiently, and lead to wear and tear on the system overall.
So, before choosing an air filter with the highest MERV rating, be sure to check that your system is compatible with that type of air filter. It is always best to consult a professional if you are unsure.
Professional HVAC Services from Fugh Refrigeration
In conclusion, using the wrong size air filter can cause serious issues for your HVAC system. It can lead to reduced airflow, decreased efficiency, poor air quality, and potential damage to your system. It is important to choose the right size filter for your specific HVAC system and replace it regularly according to manufacturer recommendations.
By doing so, you can ensure the optimal functioning and longevity of your HVAC system, as well as maintain clean and healthy air in your home.
If you need any assistance with your HVAC system, don’t hesitate to contact the professionals at Fugh Refrigeration. Our team of experienced technicians can help with all your HVAC needs and provide expert advice on choosing the right air filter for your system. Contact us today for professional HVAC services!
About The Author
Ben Lutz is the owner of Fugh Refrigeration, has decades of experience in the HVAC/R industry, and has managed many heating, cooling, and refrigeration technicians over the years.
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