If you’re a seasonal allergy sufferer, you know the daily struggle to prevent the myriad symptoms allergies can cause. They’re a problem for many Americans — pollen allergy is one of the most common chronic diseases in the United States.
Seasonal culprits like pollen begin showing up as early as March in the southern United States. If you’re dreading the arrival of spring, indoor air filtration and HVAC installation can play an important role in preventing or mitigating seasonal allergy symptoms.
Indoor Filtration Options
There are two primary ways to filter the air in your home. Whole-house filters clean the air using filters built into the return-air ductwork of existing HVAC systems. They’re easy to maintain, purify the air in your entire house and accept a wide variety of filter materials. Portable air filters use small fans to push air through a filter and are designed to clean one room. They’re not as efficient as whole-house options but work to target specific spaces when HVAC installation isn’t an option.
Types of Filters
Pollen and dust cause most seasonal allergies. Pollen particles can range from 10 to 100 microns in size, while dust ranges from 0.5 to 5 microns. Not all filters can capture particles of these sizes.
HVAC systems commonly use mechanical air filters made of synthetic fibers that trap particles. The filters’ effectiveness is measured as a Minimum Efficiency Reporting Value, or MERV rating. The lower the MERV, the poorer the filter quality. For seasonal allergies, these disposable filters are affordable and efficient:
- Pleated: MERV rating of 10–13 or 14–16 for high efficiency. Electrostatically charged pleated filters attract allergens like pollen.
- HEPA: removes up to 99.97 percent of all particles; MERV rating of 17–20.
Portable air cleaners’ effectiveness is measured by clean air delivery rate, or CADR. Many portable air cleaners don’t have high enough CADR values to remove large pollen particles. Look for these filters if you use a portable device:
- HEPA: removes up to 99.97 percent of air pollutants as small as 0.3 microns.
- Electrostatic charged: uses tightly woven electrostatically charged fibers; effective at trapping small particles like dust, mildew and pollen.
Silver ion and activated carbon filters are designed to remove harmful bacteria, not irritants like pollen.
The Best Option
If you’re looking for indoor air filtration for seasonal allergies, a whole-house filtration system with a high-efficiency furnace filter is the best choice. Adding a portable air filter while you sleep may also alleviate symptoms. The most important thing to remember is to change your HVAC system’s filter every 6–12 months.
Proper HVAC installation and maintenance are essential for effective indoor air filtration. HVAC professionals at Cox Heating and Air Conditioning can help you choose the right filter for your HVAC system and educate you on regular filter changes. Don’t suffer this spring; call the air-filtration experts at Cox Heating and Air Conditioning to take control of your indoor air quality today.
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