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 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 air conditioner 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. 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 os its minimum efficiency reporting value (MERV), which is rated on a scale 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 important parts from dirt and debris that could lead to problems. At sufficient efficiency, the air filter also improves indoor air quality by keeping particles out of your indoor air, which could lead to allergies, asthma attacks and other breathing problems.
How Can Pet Hair Impact an HVAC System's Air Filter?
As pets shed, their hair becomes airborne and may gradually reach the HVAC system through the return air ducts. When the filter is missing, pet hair can build up on 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 mold and bacteria that can generate 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 traps the hair and prevents it from landing on sensitive cooling components. At the same time, this quickly clogs the filter up, decreasing airflow and increasing 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, is a common allergen that causes respiratory problems in people with 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:
- Stick to a regular schedule when cleaning or replacing the filter: Depending on the number of pets and the filter's specific design, you may need a new filter every 30 to 90 days. Keep an eye on it every month and replace it when a clog appears.
- Keep ventilation clear: Pet hair can accumulate on air registers and grilles, limiting circulation. 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 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 around the house. Proper cleaning should include 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 secured to a concrete slab just outside the home. Clear away any accumulated debris, including pet hair, grass clippings, dead leaves and other forms of yard waste. This encourages normal heat transfer for more efficient operation.
- Don't ignore preventive maintenance: Ideally, your local HVAC professional will inspect and maintain the air conditioner annually, preferably in the spring. They can identify and fix small issues, keep internal components clean and offer tips to keep your air conditioner running efficiently with pets.
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