SEWING MACHINES & VACUUMS UNLIMITED INC. of Rockville, Maryland

      (301)424-1200

Hours of Operation 
Monday - Friday 10-7 
Saturday 10-6 
825-H Rockville Pike Rockville, Maryland 20852 
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Particle Scan

If you have allergies, a HEPA filtration vacuum and/or air purifier could help you breath easier, however not all HEPA filtering machines clean the air, some actually pollute the air! 

Our particle scanner can help you select a HEPA Read More...

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Allergy Filtration:

If you have allergies, a HEPA filtration vacuum and/or air purifier could help you breath easier and may reduce medical problems, however not all HEPA filtering machines clean the air, some actually pollute the air! 

Not all HEPA filters are created the same, while most vacuums today have a HEPA filter, they are not designed around the filter. Most vacuums are designed, then a filter is then put in place. Plus the filter in the vacuum may not be a well designed HEPA. 

Note: there are no laws in America requiring companies to use a certain grade of media or to have their filters tested to ensure levels of claimed filtration. This creates a gray area involving HEPA filtration, some call their filters "HEPA Type"," HEPA Style", "True HEPA" and some even call them "HEPA". Don't be misled, THESE ARE NOT REAL HEPA FILTERS!

There are only a few vacuums with certified HEPA filters. Miele Vacuums (S500-S600) are the worlds first certified HEPA vacuums and the IQ Air is the worlds first HEPA certified Air Purifier (Certified by the European Norm (EN 1822)) .

EN 1822, which was released in the year 2000 is the world's most advanced and stringent air filter standard for particulate filters. Many high-tech manufacturers such as Intel already require their filter suppliers to supply them with EN 1822 certification.

To demonstrate how well these products perform, and also to expose the machines with HEPA filters that do not have any benefit, we invested in a laboratory particle scanner.

This scanner will show at the HEPA level (.3 microns) how many particles per cubic foot are in the air. While some machines expel levels that are unbelievable, in the tens of millions (Yes this is true, even of thousand dollar machines with HEPA's), the certified HEPA units we offer expel levels in the hundreds and below!

If you have allergies and/or asthma and your looking to clean the air in your home or office, you need to have the machine your interested in tested.

To schedule a appointment to have your vacuum or air purifier tested, and to have new machines we offer tested, please CONTACT US.