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why does my air conditioner filter get dirty so fast

Why Does My Air Conditioner Filter Get Dirty So Fast?

Let Green Energy Mechanical Inc. fix any air conditioning concerns you have. Call 781-236-3421 to schedule an appointment!

Why does my air conditioner filter get dirty so fast? This is one of the most common questions homeowners ask Canton’s AC maintenance experts at Green Energy Mechanical Inc. However, the answer depends on a few factors that can vary between each household. 

This guide explains why your air filter quickly collects dirt and what you can do to maintain good air quality. Keep reading to discover how these tips can help keep your HVAC system clean and functional. 

Your Home’s Occupants Contribute More Dust and Dirt

Why does my air conditioner filter get dirty so fast? Consider the amount of dirt one person may track into the house vs. six people. If you find that your filter gets dirty fast, consider all the occupants of your home and adjust your cleaning schedule accordingly. 

It’s not only human occupants. If you have any four-legged friends living in your house, they, too, are responsible for the amount of dirt your filter collects. Loose pet hair and dander can clog air filters fast, regardless of the number of people living in the home. 

A house that has several people or pets in it will likely need to change out air filters more frequently. Mark the date when you place a new, clean filter and monitor it every few days. When you find it needs changing, check back to the original date and abide by that timeline for how often you should swap filters. 

You’re Using the Wrong Filter

Did you know there are different types of filters for your HVAC system? Finding the right one is key to keeping your air quality under control. Everything from the size of the filter to the type of material it uses and even its textural style can impact your HVAC system. 

Check the Minimum Efficiency Reporting Value, or MERV rating, since this will determine how effective your filter is at trapping particles. You can also check the Microparticle Performance Rating or MPR to gauge how well your filter keeps out nanoparticles. 

If you are unsure which filter is best for your home, reach out to an HVAC professional. A licensed technician can inspect the system and supply you with the ideal filter, as well as give you tips for maintaining it.

You Have Leaky Ducts

Why does my air conditioner filter get dirty so fast? The problem could lie in your home’s duct system. Cracked ducts that leak temperature-controlled air force your HVAC system to work harder, therefore, it must filter more air than usual. 

There are many ways you can perform energy-saving AC maintenance on your own, though leaky ducts require the help of a professional. An expert will seal off any gaps in your ductwork and clean them of any dust and grime. The result is cleaner air, lower energy bills, and, ideally, an air filter that doesn’t become dirty so quickly. 

High Level of Contaminants in the Air

It’s possible that your home has an influx of contaminants in the air, which can clog your air filter fast. You can have a professional conduct an indoor air quality inspection to determine the cause of the problem. This not only will quickly fill up your air filter, but it also puts your health and safety at risk. 

Breathing in harmful contaminants, such as mold or mildew, can impact your respiratory system. Not addressing the issue can lead to health problems like:

  • Difficulty breathing
  • Dry throat
  • Fatigue
  • Nausea

Importance of Clean Air Filters

Now that you know what clogs your air filter, let’s address why you need to keep it clean. Dirty filters force your HVAC system to work harder and, in severe cases, may cause it to overheat. They may also leave you with uncomfortable indoor temperatures since less air is able to pass through the filter. 

Finally, the dirtier the filter, the worse your indoor air quality will be. Save your system and breathe cleaner air by monitoring your filters.

Green Energy Mechanical Inc. Has Your Solution 

Why does my air conditioner filter get dirty so fast? How often should you change your air filters? Our team at Green Energy Mechanical Inc. has the answer to these questions and more. 

Our licensed professionals are ready to address your concerns and get your HVAC system working at its best. Contact us at 781-236-3421 to speak with a specialist and schedule a service appointment. 

Author Bio:

Jonathan Neves

Worked in the HVAC industry since he was 17. He started as an HVAC service technician for commercial buildings and eventually came into the residential market because of his love of working with people. He believes that what really sets Green Energy Mechanical apart is how long they stand behind their work and how compassionate his employees are for their clients.


My furnace was not working this morning. I called Green Energy and within a few hours Terry was here and quickly took care of the problem. Terry has been here before and is very professional and friendly.
Ginny C.
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Very professional operation. Great technicians. Follow COVID protocol. Leave your house and property very clear with no trace that work had been done.
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Quinn was really nice, professional, and answered all my questions in a clear and easy manner. The woman I spoke with on the phone was also very kind, so I will definitely use this company again.
Peter T.
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Green Energy Mechanical is a pleasure to work. We had both air conditioning and heating installed. During both jobs, GEM was thorough and professional from start to finish.
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I could not be more pleased with the service provided. We have upgraded our water heater to a tank less. We are also getting our heat and ac installed by them. They care for your home like you would
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