What Can Animal Hair Do to My AC Filter?

Pets are an important part of many people’s lives. In fact, pets are usually considered part of the family, and we want to {have them around for many years|keep them well-cared for.  

Regrettably, pet hair usually has a negative impact on the efficiency of your air conditioning system. But with routine maintenance, you can ensure adequate airflow and protect your cooling system from harm. 

How Does an AC Filter Work, and Why is It So Important? 

Your air filter is a key component of the HVAC system. The filter is the primary solution to capture airborne particles, such as dust, pollen and pet hair, keeping them from reaching other rooms or areas of the property. Various designs can be used effectively, including fiberglass, pleated and electrostatic. A filter’s effectiveness depends on its minimum efficiency reporting value (MERV), which could be anywhere from 1 to 20, with higher ratings corresponding to stronger filtration. 

An air filter’s key purpose is the protection of the evaporator coil, blower motor and other delicate hardware from dirt and debris that could cause damage. An efficient enough filter also improves indoor air quality by reducing particulates in the air, which often contribute to allergies, asthma attacks and other respiratory issues in sensitive individuals. 

How Can Pet Hair Impact an HVAC System’s Air Filter? 

When pets shed, their hair becomes airborne and is drawn into the HVAC system through the return air ducts. When the filter is missing, pet hair accumulates within the evaporator coil, blower motor, fan blades and other components, slowing them down and reducing efficiency. Hair can also mix with condensation formed during air conditioning, creating a breeding ground for microorganisms, which can produce foul odors and lower indoor air quality. 

Even with a filter in place, pet hair isn’t harmless. When return airflow arrives at the HVAC system, the filter does its job by trapping the hair and preventing it from landing on vulnerable cooling components. However, this clogs the filter more quickly than usual, decreasing airflow and increasing strain on the HVAC system. Without maintenance, you may experience higher energy bills and more frequent breakdowns. 

What About Animal Dander? 

Pet dander, consisting of microscopic skin flakes and saliva particles, commonly exacerbates respiratory problems for those suffering from allergies or asthma. You need a filter with a high MERV rating to effectively capture and remove dander, which is much smaller than pet hair. 

How to Care for Your AC System and Filter with Pets 

You can take steps to maintain the efficiency of your air conditioner, even with pets living in your home. Here’s how: 

  • Stick to a regular schedule when cleaning or replacing the filter: Depending on the number of pets and the filter’s specific design, you might need to replace it every 30 to 90 days. Take a look at the filter each month and replace it when a clog appears. 
  • Periodically clean the return air ducts: Pet hair gradually piles up against the air registers and grilles, limiting circulation. You can clean them with the brush attachment on your vacuum cleaner as often as needed. Then, call a professional for cleaning out the collected pet hair, dander and dust inside your ductwork every few years. 
  • Keep pets well-groomed: Regular brushing and bathing reduces the hair and dander your pets generate. Keep the brushing outdoors and sweep the area afterward to prevent the hair from getting tracked inside. 
  • Consistently vacuum and dust: Not all pet hair ends up in the HVAC system. A lot of it settles on surfaces or under furniture. Keep up a regular cleaning routine that includes vacuuming, sweeping, dusting and laundering your pet’s bedding. 
  • Clear the area around the outdoor unit: Central air conditioning systems come with an outdoor unit fixed to a concrete slab just outside the home. Clear away any accumulated debris, like pet hair, grass clippings, dead leaves, and other forms of yard waste. This helps maintain consistent heat transfer for more efficient operation. 
  • Keep up with routine AC maintenance: Ideally, your local HVAC professional will inspect and maintain your air conditioning system every year, preferably in the spring. This professional can find and resolve any small issues, clean internal components and offer tips to keep your air conditioner running efficiently with pets. 

Call for Indoor Air Quality Services 

If you want to minimize the impact your pets have on your HVAC system and indoor air quality, consider for expert advice and solutions. We sell and service many quality indoor air quality products to help keep pet hair and dander at bay, such as advanced air filtration, whole-house ventilation and air duct cleaning. We’ll do whatever it takes to keep getting the most from your air conditioning. Rest assured that everything we do is backed by a one-year 100% satisfaction guarantee! To request indoor air quality services in North America, please contact today

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