Blog Category: Product Information

Making micro chips is a very challenging and expensive process. The cost of building these chip plants is enormous and there are only a handful of companies that are currently making these chips. The manufacturing process includes clean room assembly areas where the chips are fabricated and to keep the environment very clean they use very high end clean rooms.

The chips are made in layers and if any airborne particulate gets in between these layers it will short out the chip. And these chips are not cheap to make so if they have any issues with contamination in the manufacturing area it is possible to lose the entire run of chips. To ensure this does not happen these Clean Rooms use HEPA filtered air in a positive pressure mode to keep the rooms extremely clean. 

Clean Rooms have a specific classification each Class having a performance demand issue. A Class 100,000 means that the room has a maximum of 100,000 particles per cubic foot in the room at 0.3 microns. As a comparison the amount of sub micron airborne particles in your home range from 200,000 to 1,000,000 particles per cubic foot. In chip manufacturing Class 100, Class 10 and Class 1 clean rooms are utilized. This means a class 100 can only have 100 particles per cubic foot in the room. These are rooms with a minimum number of personnel that are usually completely gowned head to foot. In Class 10 and Class 1 clean rooms there are no people just robots. 

Pure Air Systems has been manufacturing HEPA and Carbon based air filtration systems fan powered, metal framed air filtration systems since 1985. Today, after 41 years, PAS is one of the leaders in this technology and offer up to seven different combinations of filtration units to meet any application, from medical, institutional, manufacturing, and residential.

For more information on the complete line of HEPA based filtration systems please go to our website at: http://www.pureairsystems.com   or call us on our toll free number at;  800-869-8025.

Smoke, no matter how it is generated, is made up from very tiny particles that usually have a sticky or tacky component to them. This tacky substance will stick to any surface and then release the smoke odor for a period of time. This is why you have that smoke odor on your cloths after being encased in smoke from a grill, wood fire or cigarette. Smoke is perhaps the most difficult of airborne contaminants to remove due to these issues. The tacky material clogs up the openings of most particle filters and unless you are using an open mesh filter media which has virtually no capacity to collect much if any of the smoke particulate.

In order to remove a very large percentage of the smoke particles and help reduce the odor that continues to release from the smoke coatings, you need to utrase a multi-stage filtration unit. This would include a prefilter ( medium duty air filter ) carbon adsorption material and a HEPA filter. These three stages are used in commercial applications where smoke removal is required. This type of system design is not often used in the residential market but it is available for homeowners from Pure Air Systems, inc.

PAS has been making commercial grade, HEPA based, fan powered air filtration systems since 1985. These units come in a metal framed housing and use variable speed controlled motors that can be operated remotely with an app. The systems come in a wide variety of sizes and air flow capabilities from 50 CFM up to 2,000 CFM. They can be attached to an existing HVAC system or use as stand-alone units. 

For more information on the complete line of HEPA and Carbon based air filtration systems please go to our website at: http://www.pureairsystems.com    or call us on our toll free number at; 800-869-8025.

The fires in the US West and Canada have been making life very difficult for millions of Americans who live near to or down wind from the forest fires. Smoke from Canadian fires has found its way into the New England states and many states in the Midwest are seeing smoke from the Western states fires. 

Smoke from burning wood and leaves is very dense and acrid and can create significant respiratory issues especially for those individuals with Asthma or lung issues. Senior citizens are often the most affected. But there are some remedies that allow for reduction and/or removal of the smoke and odor. 

Smoke from burning wood and leaves carries a series of chemicals in the smoke that can cling to any surface and release that odor for a long period of time. The use of general duty furnace filters will not really help much as the smoke particles are very tiny and will pass through these media filters. Only HEPA or HEPA type filters are designed to capture up to 99% of these particles and the additional use of Carbon media for odor adsorption is necessary to remove the smoke odor.

Pure Air Systems has been manufacturing HEPA and Carbon based fan powered air filtration systems since 1985. They make a wide variety of sizes and performance units that can be adapted to any HVAC system or used as stand-alone units. These units incorporate variable speed programmable motors and they can be fitted with both prefilters, HEPA and Carbon media all in one unit. These are commercial grade systems that are identical the ones used in surgery suites, clean rooms, industrial chip manufacturing and more. The systems are easy to install and are all metal housing fabrication. They are made in the U.S. and are very reliable and will run for a long period of time before filters need to be changed.

For more information on the complete line of HEPA and Carbon media filters please go to our website at: http://www.pureairsystems.com   or call us on our toll-free number at;  800-869-8025.

It has always been a challenge trying to stay healthy while traveling in large groups, going on vacation and being cooped up with hundreds of people on a plane or thousands of people on a cruise. You always find friends and neighbors who have jus t returned from a trip only to have some kind of bug. This is why more people wear masks when traveling in confined quarters with lots of people for extended periods of time. 

On planes and cruise lines, the cabins have little or no real air filtration systems other than light duty filters to keep the air handling equipment clean. The removal of airborne allergens and pathogens is not accomplished by these filter systems and the tiny viruses that are floating around the airspace you occupy are breathed in continuously. This is how colds, flu, and other respiratory infections occur. Your bodies immune systems cannot always protect you from catching one of these illnesses.

In hospitals, surgery suites, micro chip manufacturing, clean rooms and any manufacturing application where keeping the air very clean the only type of filters that are used are HEPA filters. These highly efficient, somewhat expensive, media filters are specifically designed to remove up to 99.995% of all particles 0.3 microns and larger. There are a variety of these HEPA filters that have even better particulate capture rates with some up to 99.99955 of all particles 0.1 microns and larger. 

To give you an idea of micron size range, your hair is about 100 microns in diameter. You can only see down to about 20 microns with the naked eye. Viruses are as small as .001 microns in size. The standard duty air filters you use in your home are designed to capture large particles only and do almost nothing to remove the more harmful sub-micron airborne viruses. 

Pure Air Systems has been making HEPA based, fan powered, commercial grade HEPA based air filtration systems since 1985. They are one of the leaders in high volume stand alone HEPA filtration systems using programmable, variable speed motors for finite control of air flow and particulate capture. These systems range in air volume from 50 CFM to 2,000 CFM with the ability to control air volume in 1% increments. These units can be used as stand-alone units or attached to existing HVAC units, are designed for commercial, industrial, institutional and residential applications.

For more information on the line of PAS HEPA systems please go to our website at:   http://www.pureairsystems.com  or call us on out toll-free number at: 800-869-8025.

For many commercial and residential HVAC systems, air filters and/or carbon media adsoprtion media filters, are located on the downstream side of the air handler ( fan ) section. These filters see all of the air from the return air system. Over time, these filters will get very dirty and start to load up and create some additional resistance across the air handler fan. This additional static load will actually reduce the amount of air flow since the higher resistance will create an issue for the fan and motor and thus reduce air flow. This means it will take longer to heat and cool the building structure using more power.

If you are using a high efficiency filter like a HEPA media filter, these filters have an extremely high resistance when clean and the pressure drop across the filters gets very high as the filters load up. In addition, you really need a medium duty air filter ahead of the HEPA filter as the HEPA is really designed to remove very tiny (sub micron ) particles ( think Bacteria and Viruses ). Therefore, putting this combination of high efficiency filters and HEPA filters in line in the air handler is very difficult.

To resolve this issue, Pure Air Systems, uses their fan-powered HEPA based air filtration systems that are incorporated into the return air side of the HVAC system. By taking only a portion of the air from the main return air duct and then putting that back into the air handler upstream of the fan, the PAS units can filter a portion of the air through very highly efficient HEPA filters without affecting the pressure drop across the main air handler fan. While this approach only takes a portion of the return air, over a 24 hour period, this concept will filter all the air in the home or office 24 to 48 times per day. 

For more information on the PAS complete product line please go to our website at: http://www.pureairsystems.com or call us directly at: 800-869-8025.

For the past 40 years the use of UV lights in HVAC ducted systems has been promoted as a way to eliminate mold and bacteria from the inside of the HVAC air handler. These UV light systems are normally located in or near the fan coil area where moisture is most present. These light systems are often used in-lieu of air filters or specifically HEPA air filters. One of the main reasons for using the UV lights is that they do not create any additional static pressure across the fan so that the air flow remains constant and stays at the correct air flow for maintaining proper heating and cooling of the indoor environment.

While it is true that HEPA filters or high density filters will create additional static loads on the air handler fan and can reduce air flow, the HEPA filters are much better at removing the airborne mold, bacteria and other contaminants, especially the smaller sub-micron particles that can truly affect your respiratory systems.  

The challenge with using UV lights, is that fact that the air flow from the fan passes by the UV at a very high rate of speed, and they airborne contaminants are not seeing the UV light rays for very long and in many cases the UV light does not destroy or kill the mold, bacteria or viruses. Even after multiple passes, the overall efficiency of the UV lights is minimal. As a comparison, if you are passing all the air all the time through HEPA or high efficiency air filters, all the air all the time is being filtered and the air filters will actually capture the particulate and keep it from re-entering the air stream.

One reason that people tend to stray toward using the UV light systems is the fact that HVAC contractors find that installing the UV light systems is easier and requires virtually no maintenance and most people have little knowledge of particle removal or efficiencies of air filters vs UV light systems. It is important to understand the differences between these two processes and remember that air filters are always a better option than using light as a means of minimizing the levels of harmful bacteria in the indoor environment.

For more information on our HEPA based product line, please go to our website at;  http://www.pureairsystems.com  . Or, you can call us on our toll-free number at 800-869-8025.

Pure Air Systems was founded in 1985 with the specific intent of bringing commercial grade HEPA based air filtration systems to the residential and industrial markets. Over the years PAS developed 7 different system configurations that could either be attached to an existing HVAC system or used as stand-alone units. 

Over the years PAS has improved its air filtration systems by incorporating programmable variable speed drive motors that can now be operated with an app on your cell phone. This allows for infinite air flow adjustment for best filtration efficiency and performance. This process provides a unique advantage of using the PAS line of HEPA filters over all the other competitors in the market. In fact, Pure Air Systems, Inc, is one off only 3 companies in the world that make this type of air filtration system.

The PAS HEPA systems use all metal housings and can incorporate a variety of filter types in their units. These include the scanned 99.995% HEPA filters, carbon media filters and ring panel pre-filters. The system range in air flow capacity from a low of 50 CFM up to 2,000 CFM for the larger units. The systems can be used strictly as odor or gaseous removal systems by using just the pre-filter and carbon media filters without the HEPA. This makes these systems extremely flexible as they can be modified in the field with different filter arrangements in a matter of minutes.

For more information on the complete line up of HEPA based and Carbon based fan-powered air filtration systems please go to our website at;  http://www.pureairsystems.com      or call us on our toll-free number at, 800-869-8025.

HEPA filters have been around for a long time and they are used in a wide variety of applications including hospital surgery suites, commercial air filtration applications, cars, homes and in AI chip manufacturing. These filters are unique, in that they are made from special fibrous paper and extremely good at removing particles in the air is sizes down to .01 microns with efficiencies approaching 99.99999%. 

There are various grades of HEPA filters. The standard HEPA filters are effective down to 0.3 microns at 99.99% and are capable of removing all bacteria and some larger viruses. There are ULPA HEPA filters ( Ultra Low Particulate Air ) and SULPA  HEPA filters( Super Ultra Low Particulate Air ). These HEPA filters are normally used in Clean Rooms where the elimination of 99.99995% of all particles .01 microns and larger are required. To give you an idea of how small this is, your hair is about 100 microns in diameter. Also, you can only see down to about 20 microns with the naked eye. So .01 microns is very small. 

Over the past 30 years, HEPA filters have been incorporated into many air filtration devices and systems. Pure Air Systems, Inc. developed a fan powered, HEPA based air filtration system in 1985 that used the standard HEPA as its base filter. The company has seven different systems with air flows in the range of 50 CFM to 2,000 CFM. These are all metal housings using programmable variable speed motors that can compensate for the increase of static pressure across the HEPA filter and automatically maintain the required air flow for the applications. These are also capable of being operated by an app on your cell phone.

For more information on the complete line of HEPA systems available please go to our website at:  http://www.pureairsystems.com   or call us on our toll-free number at: 800-869-8025.

Activated carbon has been used in a multitude of applications to reduce and/or remove odors and gaseous pollutants from organic and inorganic materials. Carbon pads or granular carbon is often included in water filtration systems as well as air filtration units in both residential and commercial applications.

Activated Carbon is usually made from cocoanut shells and then heated to high temperatures to expand the material to allow for a high capacity of adsorption of gases and odors. Carbon can usually adsorb ( with a d rather than a b ) 100 times its weight in gaseous pollutants and will eventually release these odors once it has reached its adsorption capacity. 

There are specific formulas that are used to determine how much carbon ( in lbs ) will be required to handle a level of gaseous pollutant at  cubic foot/minuet flow rate. The higher the flow rate in CFM ( ie:  500 CFM ) the larger the amount of carbon needed. It is also possible to determine the frequency of replacement of the carbon in time based on these calculations. 

Pure Air Systems has been making HEPA and Carbon fan powered, commercial grade air filtration systems since 1985 and offers seven different sizes and configurations that can include all Carbon media or a mixture of Carbon media and HEPA filtration. For more information on these units please go to our website at:  http://www.pureairsystems.com  or call use on our toll-free number at:  800-869-8025.

Since it’s beginnings in 1985, Pure Air Systems has strived to push the limits of available technology to continue to improve its HEPA based air filtration systems and offer more operational flexibility for its commercial and residential customer base. During the early years of operation PAS used the common induction motors for their systems. These were limited to one speed and limited the amount of volume adjustment in the filtration systems. 

In 1999, GE produced a new variable speed drive motor known as an ECM motor. This motor was a total departure from the wound copper induction motors as it use magnets for its drive mechanism. It could run forward or backwards and could be controlled digitally to operate in 1% increments from % of volume to 100% of volume. PAS was one of the first companies in the US to test this motor and eventually incorporate it into all of our systems. Additionally, these motors could be used in 120/240 50/60 Hz applications, making them perfectly suited for use overseas where most electrical systems are 240 volt/50Hz. This allowed us to open up new markets in Europe and Asia.

In the past year the the 2nd generation of these motors now allows us to operate them using Bluetooth apps on any smart phone. This gives the customer complete control of the HEPA systems no matter where they are located. And, the new motors can be programmed for different HP requirements from 1/3 HP up to 1 HP and run at full speed even when the pressure drop across the HEPA filters gets as high a 3.3 inches of static pressure.

For more information on the complete line of HEPA and Carbon based air filtration systems please go to our website at:  http://www.pureairsystems.com  or call us on our toll-free number: 800-869-8025.