What is HEPA?
Air pollution is everywhere, not just outside your home, but inside as well. Dust mites, mold spores, pollen, pet dander, car exhaust, factory smoke, second hand smoke are all likely to be contaminating the air inside your home. This unfortunately can have adverse health effects, especially if you or one of your family members have allergies, asthma or any other respiratory health problems. If you are looking for a solution to give you relieve of your breathing strains, using a HEPA filter will help your conditions dramatically. At HVAC.com, we highly recommend that you consider a HEPA filter or filtration unit (portable or central) when considering solutions for your home or business.
HEPA stands for high-efficiency particulate air, which works by forcing air through a fine mesh of filters that traps pollutants, bacteria and other particles such as pollen, pet dander, dust mites and tobacco smoke. HEPA Filters provide the absolute best performance at filtering airborne particles and pollutants down to .3 microns or smaller in size. Just to give you a frame of reference, .3 microns is teeny tiny – about 1/200th diameter of a strand of hair!
HEPA filters are not MERV rated, as they surpass the ASHRAE test protocol used to determine the MERV rating. HEPA filters are the only mechanical air filters that are tested and certified before sold to ensure they are meeting the minimum efficiency of 99.7%. Meaning, if 10,000 .3 micron sized particles were blown into a HEPA air filter, only 3 particles will be able to pass through. To give you a better idea of what a .3 micron particle would look like, A particle of dust can range from .3 microns to 50 microns, with an average household dust speck measuring about 20 microns.
How Does a filter catch something so small? Good question. Most furnace filters (pleated) are membrane filters, which only let particles pass if they can fit through the smallest openings in the material. However, HEPA filters target particles at the microscopic level by working like a magnet, making the particles “stick” to the special fibers that the filter is composed of.
If you have mild to severe allergies or respiratory health problems, I hope you are taking good notes! HEPA filters can be very effective for people with allergies or asthma since these ailments are often triggered by inhalation of airborne particulates that HEPA filters can eliminate. There is no question, using a HEPA filter will improve your breathing and dramatically improve your indoor air quality.
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Additional Facts about HEPA Filters:
- HEPA air filtration devices come in models and sizes to fit all budgets.
- They can remove both fine hard particles and gases.
- Some HEPA filters are actually washable, saving you money with replacement filters
- Filters are being made for just about any device that brings or takes air out of a home or a place of work.
- Devices using HEPA filtration run very quietly.
- HEPA filtration can be used as a stand-alone system or in combination with another system or device.
If you need any more information or have any questions as you consider an indoor air quality purchase, please do not hesitate to contact our customer support team via email by clicking here: I have a HEPA question