Particles settle out of the air at different rates depending on the size of the particle. These tests show the relative exposure from particles at different distances from the source. To determine what happens to aerosol particles at various distances we did some tests using an atomizer and 4 particle counters. We created an imitation … More
Articles
All MERV 8 Air Filters are not Created Equal – Performance Varies Greatly by Particle Size
Different MERV 8 Filters do not perform in the same way on all particle size ranges. Pleated filters have far higher efficiency on medium sized and small sized particles than polyester pads or ring panels. The ASHRAE 52.2 test method is designed to measure the fractional efficiency of a filter by particle size. One would … More
Tex-Air Filters Austin Facility Grand Opening
Over 120 people attend the Grand Opening of the new Tex-Air Filters Austin Facility It was a packed house at 2209-A Rutland Drive at the Tex-Air Filters Austin Grand Opening. Over 120 people enjoyed a Bar-B-Que lunch and participated in prize drawings throughout the afternoon. It was a great opportunity for Tex-Air Filter customers to … More
Are Air Filter Tests Representative of Indoor Particle Counts?
A great deal of effort has been expended analyzing filter test results and procedures. Are these results consistent with indoor particle counts? The ASHRAE 52.2 filter tests are designed to provide a measure of the efficiency of filters by particle size. While the MERV numbers determined by the tests give an indication of how a … More
Tex-Air Filters Opens New Office and Warehouse in Austin
Austin Facility is conveniently located and fully stocked to supply Austin area filter customers. The new office and warehouse facility of Tex-Air Filters has opened and is ready to serve customers at 2209-A Rutland Drive, Suite 150. The office is under the direction of Patrick Rosenthal, Central Texas Manager for Tex-Air Filters. The Office Manager … More
Study Finds HEPA Filters Reduce Cardiovascular Health Risks Associated with Air Pollution
Using HEPA filters in the home is an easy and accessible way to curb heart disease say researchers. Exposure to fine particles in the home can lead to blood vessel inflammation that leads to heart disease. In a recent study Canadian researchers found that HEPA filters can reduce fine particle concentrations inside homes by 60% … More
The Effect of Particle Removal Effectiveness on Particle Levels in an Office Environment
Particle removal effectiveness is a function of filter efficiency and the air exchanges per hour but also of outdoor to indoor particle transfer, particle size and indoor activity. The purpose of this paper is to analyze the effect of air cleaning on particle counts in an office environment attached to a manufacturing facility. A 10′ … More
Are Portable Air Purifiers Effective for Reducing Indoor Allergens?
A study by researchers at Johns Hopkins provides some interesting insight into the use of air purifiers at reducing indoor allergens. At a recent meeting of the American Academy of Allergy, Asthma and Immunology (AAAAI) Johns Hopkins researchers presented findings of tests conducted with three air purifiers in reducing mouse allergens from the air. The … More
Children in Neighborhoods Near Highways and Railroad Intersections at Risk for Asthma
A study by Mayo Clinic shows that children living near traffic intersections at greater risk of developing asthma. Mayo Clinic researchers recently released data showing children who lived near major highway or railroad intersections have a higher risk of developing asthma. The researchers used this study to show how neighborhood environment is a risk factor … More
Study of Particle Counts in School with Mechanical Ventilation Produces Surprising Results
This study shows that a school with mechanical ventilation and a variable volume make-up air system using MERV 8 pleated filters has significant reductions in small particles but lower than expected reductions in particles in the 3 to 10 micrometer range. Health professionals often recommend that asthmatics and others with respiratory diseases stay indoors during … More