Quiet HEPA Air Purifier - 3 Tips for Finding the Right One

Finding a quiet HEPA air purifier means your indoor air quality will stay at its freshest without the noise sometimes associated with a high efficiency particle arresting air purifier. Here are 3 tips for making sure your purifier is a HEPA and will remove the pollutants you want, and that it will function quietly.

• 1. First determine how much sound the air purifier will make on each speed. To do this, look for a decibel rating in the technical specifications for the purifier. A decibel is a measurement of sound and is usually designated by (dB). Total silence is measured at 0 decibels, a whisper is approximately 15 (dB), and normal conversation is about 60 (dB). Having the decibel measurements for each of the air flow speeds of the purifier will give you an accurate idea of how much sound the purifier is like to make on each of the air flow speeds.

• 2. Next, you will want to be sure that the purifier is a high efficiency particle arresting air purifier. This means that the filter should remove pollutants that are as small as .3 and some HEPA purifiers will remove pollutants as small as .1 micron in size. A micron is defined as a one millionth of a meter. And to give you some idea of pollutant size, one inch is 25,400 microns. In microns pollen is 10-1,000, dust mites are 100-300, copier toner is .5 up to 15. Check to see what the smallest size particle is that the air purifier will remove.

• 3. Having the decibel rating and the micron size will certainly help point you in the right direction for a quiet HEPA air purifier, but there is nothing let seeing for yourself how the product will work in your home or office. Select a company that will allow you to try the air purifier for 30 days with a money back guarantee. That way you can be certain you have chosen the best air purifier for you and your family.

Checking the decibel and micron rating, and choosing a company with a 30 day trial period will help insure that you bring home the best quiet HEPA air purifier for you and your family.

Take good care,

Debbie Davis

Debbie Davis is President of PurerAir.com which offers Austin Air and Blueair HEPA air purifiers for the improvement of indoor air quality. Visit us now to see the Blueair 501 with HEPASilent Technology Blueair 501 HEPA Air Purifier, or call our 24 hour customer support line at (800) 997-2989 for expert advice.

Ionic Air Purifier Review - Efficacy & Efficiency Tests

Ionic air purifiers exist to combat airborne contaminants that are invisible to the human eye. They employ beneficial reactive agents that are also invisible to users. How then shall a user know if the purifier is doing what it claims or just burning electricity? A good place to start would be a properly conducted review. A quality review must begin by focusing on user safety. Safety, which can be further classified into 2 separate categories, has been covered at length in this author's 2 articles on EzineArticles.com.

An ionic air purifier review must also include 2 other equally critical criteria:

(1) Efficacy Test - the purifier technology, firmly grounded in sound scientific theory, must be proven to work in a laboratory;
(2) Efficiency Test - the lab-tested purifier technology must be successfully transplanted into an appliance that replicates the same laboratory results in the users' setting at home, in school, or the workplace. Such demanding tests require substantial resources quite beyond those of the ordinary user. The Efficacy Test must come under the purview of a laboratory and even then, a GLP-certified laboratory.

GLP, which stands for Good Laboratory Practice is a set of principles formulated by the OECD to ensure the generation of high quality and reliable test data. The Efficiency Test is even harder to achieve with consistency and objectivity since it has to be conducted on user locations. Notwithstanding these obstacles, an ionic air purifier review must include a proper assessment of the efficacy and efficiency of the ionic air purifier. Proper tests include most, if not all, of the following characteristics:

(1) A controlled experiment

• This involves the rigorous testing of an unproven statement known as a hypothesis;


• A clear concise iteration of the science behind the technology;


• Control check - the effects of an operating ionic air purifier in a room must be matched against the effects when there is no purifier present;


• Replication - the experiment must be capable of peer review, preferably by an independent third party of some authority;


• Replication - the experiment must show the same results at different times where the conditions are identical;


• Replication - different purifiers of the same model must produce very similar or identical test results;

(2) Randomized double blind testing standard - this is the highest standard of medical clinical testing where both the researcher and the test subject do not know whether they are in the actual experiment (where the ionic air purifier is functioning) or the control experiment (where the purifier is not functioning);

(3) A proper testing location - where all known variable factors that can affect the performance of a purifier can be controlled e.g. room size, temperature, humidity, inclusion or exclusion of ambient or outdoor air;

(4) Accurate measurements and recording - the effectiveness of a purifier can vary over time and distance, air flow speeds, consistency of instrumentation etc.;

(5) Proper specialized measuring equipment (images available at The Ionic Air Purifier Blog) is commonly required, such as:

• microbiological air sampler


• ozone tester


• positive & negative ion detector


• decibel meter.

(6) Proper analytical tools and skills - these are required to accurately measure and document the test results before and after the experiment e.g. analyzing mold cultures before and after ionic air purification;

(7) Integrity of the testing staff is critical so that the test results are professionally documented and reliable. Where substantially all of the above procedures have been performed on a purifier by a GLP-certified laboratory, the results of the efficacy and effectiveness tests will form very reliable inputs to an ionic air purifier review. It is the mission of this blog to obtain such test data on as many purifiers as possible, with the goal of producing reliable, objective ionic air purifier reviews for the benefit of all users.

If you are interested in quality ionic air purifier reviews, do sign up at The Ionic Air Purifier Blog, by a User for all Users.

Min En writes on The Ionic Air Purifier Blog. His healthy cynicism about manufacturers' commercial claims is transformed into positive energy that drives him to do very thorough research before buying any product. The Ionic Air Purifier Blog at http://www.ionic-airpurifiers.com documents his hunt for the ideal ionic air purifier.