What Can Animal Hair Do to My AC Filter?

A family pet is part of millions of families. In fact, pets are usually considered part of the family, and we want to 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’ll help preserve steady airflow and protect your cooling system from harm.

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

A filter is an important part of any forced-air HVAC system. Your air filter captures airborne contaminants, such as dust, pollen and pet hair, stopping them from spreading through the ductwork. Various designs can be used effectively, including fiberglass, pleated and electrostatic. A filter’s effectiveness depends on its minimum efficiency reporting value (MERV), which ranges from 1 to 20, with higher ratings indicating better 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. At sufficient efficiency, the air filter also improves indoor air quality by reducing particulates in the air, which often contribute to allergies, asthma attacks and similar conditions.

How Does Pet Hair Affect Your HVAC System and Filter?

While animals are shedding, their hair becomes airborne and can eventually get into the HVAC system through the return air ducts. Without a filter installed, pet hair collects inside the evaporator coil, blower motor, fan blades and other components, reducing their efficiency and life span. Hair can also become clogged with moisture found in the cooling system, creating a breeding ground for mold and bacteria that can generate foul odors and lower indoor air quality.

But even if you have an air filter installed, pet hair can still lead to problems. When return airflow draws it toward the HVAC system, the filter captures the hair as it passes, keeping it from landing on vulnerable cooling components. At the same time, this quickly clogs the filter up, limiting airflow and placing additional strain on the HVAC system. Without intervention, you may experience higher energy bills and more frequent breakdowns.

What About Animal Dander?

Pet dander, consisting of small skin flakes and saliva particles, is a common allergen that causes respiratory problems in people with 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

Maintaining an efficient, properly functioning air conditioner is certainly possible, even with pets living in your home. Here’s how:

  • Stick to a regular schedule when cleaning or replacing the filter: Depending on the total number of pets as well as the filter’s efficiency, you may need a new filter every 30 to 90 days. Take a look at the filter each month and replace it when a clog appears.
  • Clean your air vents and ductwork: Pet hair collects on the air registers and grilles, limiting circulation. Clean these 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 in the air ducts every few years.
  • Keep pets well-groomed: Regular brushing and bathing is a great strategy for reducing pet hair. Make sure to handle brushing outside and sweep the area when you’re done to stop hair from just drifting back 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 mounted to a concrete slab somewhere along an exterior wall of the home. Clear away any accumulated debris, such as pet hair, grass clippings, dead leaves, and other objects. This helps maintain consistent heat transfer for more efficient operation.
  • Keep up with routine AC maintenance: An HVAC technician should inspect and maintain your cooling system once a year, preferably in the spring. They can identify and fix small issues, clean internal components and provide recommendations about how to keep your air conditioning running efficiently with pets.

Get in Touch with for Indoor Air Quality Services

When you’re tired of excess pet hair affecting your HVAC system and indoor air quality, turn to for personalized recommendations on the best solution. We offer a range of 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 can also maintain your HVAC system for maximum performance and efficiency. 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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