What Can Animal Hair Do to My AC Filter?

Pets are an important part of many people’s lives. You probably consider your dog or cat a beloved family member and want to keep them well-cared for.

Unfortunately, pet hair usually has a negative impact on the efficiency of your air conditioning system. With proper maintenance, you can avoid impacting airflow and protect the cooling equipment from harm.

How Do AC Air Filters Work, and Why Are They 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. There is lots of variety in the materials they use to accomplish this, including fiberglass, pleated and electrostatic. Your filter's effectiveness can be illustrated with its minimum efficiency reporting value (MERV), which could be anywhere 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. An efficient enough filter also improves indoor air quality by reducing particulates in the air, which could lead to allergies, asthma attacks and similar conditions.

How Does Pet Hair Affect the Air Filter of My HVAC System?

While animals are shedding, their hair becomes airborne and may gradually reach the HVAC system through the return air ducts. If there isn't a filter in place, pet hair can build up on the evaporator coil, blower motor, fan blades and other components, potentially stopping them from working efficiently. 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 when the filter is already in place, pet hair can still lead to problems. 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. At the same time, this quickly clogs the filter up, decreasing airflow and increasing strain on the HVAC system. Without exchanging or cleaning the filter, higher energy bills and more repair visits could be likely.

What About Animal Dander?

Pet dander, which consists of tiny skin flakes and saliva particles, commonly exacerbates 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

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 total number of pets as well as the filter's efficiency, you should try to replace it after 30 to 90 days. Check it every month and replace it if you notice weaker airflow or can see evidence of a clog.
  • Clean your air vents and ductwork: Pet hair collects on the air registers and grilles, reducing airflow. You can clean them with the brush attachment on your vacuum cleaner as often as needed. Then, hire a professional to remove built-up pet hair, dander and dust in the air ducts every few years.
  • Bathe or brush away excess pet hair: 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: Not all pet hair ends up in the HVAC system. A lot of it settles on surfaces or under furniture. Proper cleaning should include 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 objects. This helps maintain consistent heat transfer for more efficient operation.
  • Keep up with routine AC maintenance: For best results, have a trusted HVAC technician inspect and maintain your cooling system once a year, preferably in the spring. This professional can identify and fix small issues, clean key components and provide recommendations about how to keep your air conditioner running efficiently with pets.

Call [companyname] for Indoor Air Quality Services

If you’re concerned about how your pets are affecting your HVAC system and indoor air quality, turn to [companyname] for personalized recommendations on the best solution. We offer a range of indoor air quality products designed to minimize pet hair and dander, including high-end 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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