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Identifying and Avoiding Filtering Errors: Top Tips to Follow

Apr 14, 2023

Clean and unobstructed filters are essential components in any properly functioning HVAC system. Not cleaning your filters regularly or failing to address a blocked filter can cause serious damage, including reducing efficiency and increased maintenance costs. Knowing what to look for and taking the appropriate corrective steps are essential when it comes to avoiding the common mistakes made when handling dirty and clogged filters.

Signs of Clogged and Dirty Filters 

The first step in protecting your system is identifying the signs that your filter may need to be replaced or cleaned. This includes: 
  • Decreased air flow – Reduced pressure in the system allows it to achieve shorter cooling times. The reduced pressure helps to lower the internal temperature of the system, which in turn reduces the amount of time it takes to reach the desired cooling temperature. Additionally, the reduced pressure helps create lower surface tension, allowing for faster heat dissipation. This results in reduced overall cooling times.
  • Dirty surfaces – Dirt and debris gradually builds up on the filter, blocking it and making it difficult for air to move through it. This decreasing airflow can decrease the system's efficiency, impacting its performance and causing potential damage to the system that could result in costly repairs. Unchecked, dirt and debris can also lead to the growth of mold, mildew and other microorganisms, increasing allergens, unhealthy air quality and potentially dangerous pathogens in the home.
  • Loud noises – A decrease in airflow through your HVAC system can cause loud and unusual noises, such as banging, rattling, whistling, or whooshing. These noises can indicate several possible problems, including an obstructed system, a faulty fan motor, or a failing blower. Obstructions in the ductwork can cause rattling, whistling, or banging when the air tries to pass through. A loose fan motor can cause a loud squealing or rattling, and a failing blower can cause a loud whooshing sound. If you experience any of these noises, it's best to contact a professional to diagnose and repair the issue.

Common Filtering Mistakes

When it comes to dealing with filters, there are several mistakes that can be made that can have a significant negative impact on the performance of your HVAC system. These include:
  • Not changing or cleaning the filter regularly – This can be a problem for homeowners and building managers, as clogged filters can lead to significantly reduced air flow throughout the building. Not only does this reduce the efficiency of the HVAC system, it can cause it to work harder than necessary, leading to higher energy bills and prematurely wearing out the system. Additionally, clogged filters can reduce the quality of air in the building, as they are unable to filter out dirt, dust, and other particulates. For these reasons, it is important to frequently change air filters in order to maintain maximum efficiency and air quality in buildings.
  • Installing the wrong size filter – An oversized or undersized filter will not work as efficiently as one that fits appropriately within the space, and the improper size can lead to the filter system needing to be replaced more often than one that is installed correctly. The correct size of filter can ensure that the air is properly filtered and all the necessary particles are removed from the circulated air; an oversized or undersized filter may not trap all of these particles, resulting in inefficient filtration. Additionally, improper sizing of the filter can cause increased air flow resistance, which will cause the filter to become clogged much more quickly than one that fits properly.
  • Not replacing the filter when necessary – Dirty air filters can cause clogging, reduce air flow, and eventually lead to inefficiency in an HVAC system. If left unchecked, dirt and dust can build up inside the filters, resulting in the entire system becoming blocked and inefficient. To prevent this, dirty filters need to be replaced on a regular basis. Good maintenance practices, such as cleaning and replacing filters, can help keep the system running efficiently and reliably for years to come. Additionally, replacing air filters can help reduce energy costs, reduce energy consumption, and maintain comfortable indoor air quality.

Learning from Mistakes

Being aware of the common mistakes that can be made when handling dirty and clogged filters is the first step towards avoiding them. Educate yourself on the signs of a blocked filter and take the time to inspect your system regularly in order to identify and address any issues that may be present. 
Making sure that your HVAC system is running at optimal performance is an important part of protecting it. Ensuring that your filter is clean and clear is critical for achieving this and avoiding the common mistakes made when handling dirty and clogged filters will help you maintain the proper operation of your system.

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