Clearing the air
By EMILY ANDERSON, Courier staff writer
WATERLOO — Invisible particles in the air can wreak havoc on allergy and asthma sufferers. The tiny allergens can cause sneezing, wheezing, watery eyes and an itchy, runny nose.
While many associate the great outdoors with these offending particles, they can lurk indoors as well.
An indoor air purifier can obliterate those scoundrels and others, including odor and smoke.
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But choosing an air purifier can be as difficult as choosing a new sofa — there are many options, but only one will fit your home perfectly.
Common internal purifier elements such as High Efficiency Particulate Air filters, electrostatic technology and activated carbon can be used separately or all in one purifier unit to clean up your breathing space.
Electrostatic air cleaners ionize passing dust, dander, pollen, tobacco smoke and other allergens with a charge opposite to that of the cleaner’s electrically-charged blades. As a result, offending particles cling to the blades like a magnet.
The Sharper Image’s Ionic Breeze uses electrostatic forces alone to clean a home’s air. Because it has no fan or motor, it is whisper-quiet. Some dispute that electrostatic forces alone will do the trick.
“Without a fan, what’s moving the air?” asked CeCe Block, national sales manager for HEPA Corporation.
Fans and motors are required to push air through HEPA filters, which are inserted into air purifiers to trap dust, smoke, odor and other contaminants. HEPA filters capture more than 99 percent of air contaminants.
Sharper Image spokeswoman Suzy Stephens touts the energy efficiency of the Ionic Breeze. HEPA filters and their required fans and motors add $150 more to utility bills per year than electrostatic-only purifiers.
“Because there is no fan, the Ionic Breeze uses the same energy as a night light,” said Stephens, noting, though, that HEPA and electrostatic technology “both have their benefits.”
HEPA filters work well for treating allergies and asthma because of their ability to collect dust, pollen and mold spores. Maximum benefit is achieved when HEPA filters are used with other air purifying elements, such as activated carbon and electrostatic forces. HEPA filters do not remove odor, chemicals or gases from the air, according to www.airpurifiers.com.
Activated carbon mats are used in purifiers to control allergies and odors. They absorb airborne pet dander, pollen and chemicals.
Mark Linda, environmental health manager for Black Hawk County, advises shoppers to research carefully.
“Carbon filters might take out larger particles and certain types of odors,” said Linda. “Know all the things you’re allergic to (before shopping).”
There is a simple rule of thumb for those sizing up an air purifier: The bigger the room, the larger the purifier. Smaller units work best in bedrooms and bathrooms, and bigger spaces like living rooms and family rooms require larger units.
Expect to spend between $300 and $1,000 for a purifier and anywhere from $12 to $260 for HEPA and carbon filter replacements.
Contact Emily Anderson at (319) 291-1482 or andem01 @ luther.edu.