What Can Animal Hair Do to My AC Filter?

Pets can be found in millions of homes. In fact, pets are usually considered part of the family, and we want to have them around for many years.

However, pet hair can adversely affect your air conditioning system. With proper maintenance, you can ensure adequate airflow and protect the cooling equipment from harm.

How Do AC Air Filters Work, and Why Are They Important?

Air filters are one of the most important parts 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. Your filter's effectiveness can be illustrated with its minimum efficiency reporting value (MERV), which ranges from 1 to 20, with higher ratings corresponding to stronger filtration.

The primary purpose of an AC filter is to protect the evaporator coil, blower motor and other important parts from dirt and debris that could lead to problems. At sufficient efficiency, the air filter also improves indoor air quality by reducing particulates in the air, which can cause allergies, asthma attacks and other respiratory issues in sensitive individuals.

How Does Pet Hair Affect Your HVAC System and Filter?

As pets shed, 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 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 sensitive cooling components. At the same time, this quickly clogs the filter up, limiting airflow and placing additional strain on the HVAC system. Without maintenance, high energy bills and frequent breakdowns may be right behind.

What About Animal Dander?

Pet dander, which consists of tiny skin flakes and saliva particles, is a common allergen that causes respiratory problems for those suffering from allergies or asthma. You may benefit from a higher efficiency filter to ensure it can 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:

  • Change the filter regularly: Depending on the number of pets and the filter's specific design, you might need to replace it every 30 to 90 days. Keep an eye on it every month and replace it if you notice weaker airflow or can see evidence of a clog.
  • Keep ventilation clear: Pet hair collects on 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 in the air ducts every few years.
  • Groom your pets: Regular brushing and bathing minimizes the hair your pet leaves behind. Keep the brushing outdoors and sweep the area when you're done to stop hair from just drifting back inside.
  • Consistently vacuum and dust: Pet hair can be found in pretty much every room of a house. 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.
  • Don't let debris collect near the outdoor unit: Central air conditioners feature an outdoor unit mounted to a concrete slab outside your home. Keep the area around this unit free of debris, including 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: An HVAC technician should inspect and maintain your air conditioning system every year, preferably in the spring. This professional can identify and fix small issues, clean key components and offer tips to keep your air conditioner running efficiently with pets.

Contact [companyname] for Indoor Air Quality Services

If you’re concerned about how your pets are affecting your HVAC system and indoor air quality, consider [companyname] for personalized recommendations on the best solution. We can direct you to the right 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. You can rest easy with the knowledge that everything we do is backed by a one-year 100% satisfaction guarantee! To request indoor air quality services in North America, please contact [companyname] today.

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