What Can Animal Hair Do to My AC Filter?

A family pet is part of millions of families. To be honest, our pets are usually considered a beloved member of the family and we want to have them around for many years-->

How Does an AC Filter Work, and Why is It So 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, 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 is rated on a scale from 1 to 20, with higher ratings illustrating maximum efficiency.

An air filter’s key purpose is the protection of the evaporator coil, blower motor and other important parts from dirt and debris capable of damaging them. At sufficient efficiency, the air 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 Your HVAC System and Filter?

When pets shed, their hair becomes airborne and can eventually get into the HVAC system through the return air ducts. When the filter is missing, 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 microbes like mold, which give off foul odors and lower indoor air quality.

But even if you have an air filter installed, pet hair isn’t harmless. When return airflow reaches the main HVAC system, the filter traps the hair and prevents it from landing on delicate cooling components. At the same time, this quickly clogs the filter up, limiting airflow and placing additional strain on the HVAC system. Without maintenance, higher energy bills and more repair visits could be likely.

What About Animal Dander?

Pet dander, consisting of small skin flakes and saliva particles, commonly exacerbates respiratory problems in people with allergies or asthma. Filters with higher MERV ratings are more likely to effectively capture and remove dander, which is much smaller than pet hair.

How to Care for Your AC System and Filter with Pets

Fortunately, it isn’t hard to protect the efficiency of your AC, 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 should try to replace it after 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.

• • Periodically clean the return air ducts: Pet hair collects on the air registers and grilles, reducing airflow. Trying cleaning these using 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. Brush your pets outside when possible and sweep the area after you’ve finished to keep any hair from getting back inside.

• • Consistently vacuum and dust: Not all pet hair ends up in the HVAC system. A lot of it settles on surfaces around the house. Proper cleaning should include vacuuming, sweeping, dusting and washing any pet beds.

• • Keep the area around the outdoor unit clear: Central air conditioning systems come with an outdoor unit fixed to a concrete slab just outside the home. Clear away any accumulated debris, such as pet hair, grass clippings, dead leaves, and other forms of yard waste. This ensures effective heat transfer for more efficient operation.

• • Don’t ignore preventive maintenance: For best results, have a trusted HVAC technician inspect and maintain the air conditioner annually, preferably in the spring. This professional can identify and fix small issues, clean internal components and provide recommendations about how 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, turn to for expert advice and solutions. We can direct you to the right indoor air quality products designed to minimize pet hair and dander, such as advanced air filtration, whole-house ventilation and air duct cleaning. We can also maintain your HVAC system for maximum performance and efficiency. Enjoy the peace of mind 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.