Pressurizing Your Home With PAS HEPA Filtration Systems

The majority of most homeowners are not aware that if their HVAC system is not properly balanced, when the heating/cooling fan system comes on the house may be pulling in outside air into their environment. This is referred to as the house being negative. Since your home is not really air tight, anytime the HVAC fan comes on the system will pull air through the returns and push the cooled or heated air our the supply ducts and registers and if there is more return than supply outside air will come in and make up that difference. 

This is a significant challenge as the air being pulled in from the outside will contain fine airborne particulate and some gaseous pollutants especially if you are near a road or high traffic area. This airborne dust is usually not captured in any of the air filters that are part of your HVAC system so this particulate matter will usually settle out on your floors, furniture and counter tops.

In 1985 Pure Air Systems was created and it was one of the first companies to offer true fan powered, certified HEPA air filtration systems for the residential market. The first model, 600HS was designed to attach to the return air side of the ducted heating/cooling system and filter a portion of the air in the house constantly when the fan was running. In most cases it can filter all the air in the house 24 to 48 times per day. 

One of the other advantages of this system was the inclusion of both a ring panel prefilter and true carbon media filter so removal of fine sub-micron particulate and gaseous pollutants was also accomplished. In addition, it is possible to introduce a small amount of outside air into the 600HS, or whichever PAS unit you are using, and this will fill filter any of the air coming into the house and help to maintain a more balance house pressure while still cleaning all the air in the house. And because this small amount of outside air is being introduced prior to the HVAC unit. all of it will be both filtered and heated or cooled.

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

 

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Air Filtration For 3D Printing

The use of 3D Printers has grown 1000 % over the past few years. Many schools, businesses, entrepreneurs, hobbyists and individuals now own a 3D Printer. The majority of the printers used in the schools and homes are the smaller FFF or FDM filament style printers that print with various types of plastic or composites. These printers can print over 30 different materials and their tool head nozzles can reach temperatures at or above 300 degrees celsius ( 580 F ). When melting these materials during the printing operation, small amounts of sub-micron particulate are produced which depending upon the materials used for printing may create some health issues when inhaled by the user. Air filtration for 3D printing is now becoming a major concern.

Pure Air Systems, an Indiana based company, has been making HEPA based air filtration systems since 1985. Their fan powered units range in volume from 50 CFM to 2000 CFM and their systems all use commercial grade HEPA’s, variable speed drive motors, industrial fans and all metal housings.In the past year a number of the PAS Portable units ( 250 CFM ) and the 600HS ( 600 CFM ) units have been used to filter the air from one or more filament style printers to remove the less than 20 micron sized particles from the air. HEPA filters used in the PAS units are certified at 99.99% at 0.3 microns. Much of the particulate generated by the printers is in the 1 to 10 micron range which can be inhaled and trapped in the lungs. Over time this could create some significant lung problems and severe side affects. More studies are being done all the time to determine the cause and affect.

In many cases the Pure Air Systems units are attached to special enclosures that are used to cover the printers and confine the particulate to one area. One of the better 3D Printer Enclosures is made by LiteWorld LLC., http://www.liteworldllc.com . The PAS units are very powerful allowing one of them to be used to filter the air for multiple printers. 

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.

 

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How To Identify True HEPA Filters

The term HEPA means High Performance Particulate Absolute or Air. This type of filter is used in many applications where the reduction and/or removal of fine, sub-micron airborne particles is required at a much higher efficiency than standard media filters like the ones used in air handling systems or HVAC systems. In order to qualify as a true, certified HEPA filter it must pass be able to have a rating equivalent to a MERV 17 or higher. This means the filter can capture 99.97% of all particles 0.3 microns or larger. Compare this to a MERV 5 or 6 filter which has an efficiency of less than 20% on particles larger than 10 microns in size.

A true HEPA filter is normally a pleated media filter with large pleats with separators or a mini-pleat with glue type separators and is enclosed in a metal housing.and is sealed with an industrial sealant. The metal housing has a gasket on one end of the housing which is normally placed on knife edge seal to eliminate any air bypassing the HEPA filter. The HEPA paper or filter media is fairly fragile and it also enclosed in a housing to protect the HEPA. 

Because HEPA filter paper is very dense, the ability to pull air through the HEPA requires a larger motor/blower assembly as the pressure drop or resistance as measured in inches of water is much higher than the resistance through a standard throw-away furnace filter.Usually HEPA filters are mated with a blower/motor that is designed for this type of media, or they are enclosed is a housing like the ones Pure Air Systems makes that are stand-alone units with their own blower/motor and prefilters.

Pure Air Systems, located in Indianapolis, Indiana is one of a few companies in the U.S. that makes a high performance, certified HEPA, fan powered air filtration system that can be use in the residential, commercial, institutional, industrial and medical markets. These systems are designed to either be attached to any HVAC system in a partial by-pass configuration or as stand-alone units. They range in air flow from 50 CFM to 2,000 CFM.

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

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Installing Pure Air Systems Filtration Systems On Horizontal HVAC Units

Pure Air Systems has been manufacturing fan powered, HEPA based, commercial grade air filtration systems since 1985. With seven models to choose from PAS offers a system for any application in the residential, commercial, institutional, medical or industrial markets. Their systems can be attached to any type of ducted HVAC system or used in a stand-alone configuration.

Traditionally, the 600HS Plus L version was used on only up-flow HVAC systems located in a garage or basement. In some parts of the country, specifically areas of the South where there are no basements ( i.e. Florida ) a horizontal air handler is utilized. This makes is somewhat challenging to install the 600 HS L version as it can not connect to the return air side of the air handler due to the configuration. The PAS “S” version is a straight thru unit that could be mounted above the or to the side of the horizontal air handler or even in the attic area where space is available. 

Like the L version of the 600HS, the “S” version is split into two symmetrical sections so you can rotate the discharge and inlet access doors to one of four positions thus allowing for installation anywhere so you always have access to the blower/motor and filter sections. The 600HS model produces 600 CFM of HEPA filtered air using a 1/3 HP variable speed drive motor. There is also a 1200HS Plus version, producing 1200 CFM of air and a 2000HS Plus version, producing 2,000 CFM of air. All of these units come in either the L or S versions. And, they can be wired to either connect to the HVAC system or use a digital speed controller to run the units manually from 1% to 100% in 1% increments for specific air flow requirements.

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

        

 

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Airborne Bacteria Removal and Reduction

For those individuals who live along the South West coast of Florida, this year has been especially challenging with the long last issues caused by Red Tide. This algae bloom is a common occurrence during the summer months and often begins out in the Gulf of Mexico. This year the Algae bloom has been larger and extends from Naples up to Tampa Bay. In addition, the blooms are toxic and kill sea life and produce an airborne bacteria that is harmful and potentially fatal to humans.

In 1985, Pure Air Systems was founded to bring true HEPA based air filtration systems to the residential market. These fan powered, metal housed units, are capable of providing surgery suite environments in all types of buildings and for all types of airborne contaminant applications. These true, commercial grade, scanned HEPA filters can remove up to 99.99% of all particles 0.3 microns and larger.

In the case of the Florida Red Tide issue, there are many days when the number of dead fish on the shore which produce a significant odor and also a release of toxic bacteria into the air which is blown onto shore and into the populated areas when the prevailing winds are out of the West. By applying the HEPA based technology used in the Pure Air Systems air filtration units, businesses and home owners along this stretch of shore line could effectively and safely remove a very high percentage of this airborne particulate and protect the health of those that live and work in this area.

The HEPA based air filtration systems offered by Pure Air Systems consist of small portables with volumes up to 350 CFM to large commercial units with volumes up to 2,000 CFM. PAS also utilizes variable speed drive motors so they can control the air volumes for 1 to 100% in 1% increments to provide the correct amount of air flow for the application. PAS units are used in the residential, commercial, institutional, medical and industrial markets.

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. 

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Getting The Lead Out

In the industrial market there are a number of companies that produce batteries that contain components manufactured from lead. While the technology of producing batteries is changing rapidly there are still many operations that use lead.

Lead is still widely used for car batteries, pigments, ammunition, cable sheathing, weights for lifting, weight belts for diving, lead crystal glass, radiation protection and in some solders. It is often used to store corrosive liquids.

To produce the lead or when shaping or casting the lead, the particulates that are emitted are extremely dangerous when ingested into the body either through contact with the skin or inhaled.

Plants that make or use lead have their employees wear special clothing and wear respirators whenever they are in areas of lead production. These precautions are necessary as lead dust is very fine and will find its way to any part of the building or structure.

Pure Air Systems, a manufacturer of commercial grade HEPA filtration systems since 1985, has installed many of their 2000HS Plus units in plants where lead is made or utilized in production. In many cases the fan powered HEPA units are located in employee changing rooms or offices within the manufacturing complex.

These filters remove 99.99% of all particles .3 microns and larger and the use of variable speed drive motors allows for finite control of air volume from 50 CFM to 2000 CFM in one percent increments. This provides the correct movement of air for the application.

For example, when the changing rooms or offices are unoccupied the units can run at 30% of volume. When the employees are in the rooms changing out of their protective garments the fans will run up to 100% of volume so that any dust that is thrown into the air during changing is quickly removed.

For more information on the complete line of HEPA and Carbon filtration systems please go to our website at: www.pureairsystems.com or call us on our toll-free number at: 800.869.8025.

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Air Filtration 33 Years Later

Pure Air Systems has been in the Air Filtration business since 1985 and has successfully kept its position in the HEPA based air filtration market by continuing to make advancements in its product line.

Since its’ beginning, Pure Air Systems has pushed the envelope in bringing HEPA based air filtration technology to the residential and commercial markets. It was the first company to develop the partial by-pass concept allow us to attach very large, fan-powered true HEPA systems to any forced air ducted heating/cooling systems.

In the later part of the 1990’s we were one of the first companies to use the new variable speed drive, ECM motors from GE. These motors were digitally controlled and they were rated 120/240 v 50/6h0Hz. So we could sell our filtration systems anywhere in the world. This opened up a whole new market for Pure Air Systems.

In 2001 we began working on the HPS portable HEPA unit. This small HEPA system used a four-speed EBM combination blower/motor and had a 12″ square housing that was 21″ long. It was designed for Laboratory applications as well as small rooms and offices. This was the first portable to use a scanned HEPA filter rated at 99.99% at 0.3 microns. It also included a carbon media filter like all of our other systems utilized.

The addition of the ECM motors also allowed us to develop some digital speed controllers that would give our customers the ability to use the systems in a stand-alone configuration and control fan speed from 1% to 100% in 1% increments. This opened up the door for applications where customers wanted to control the air flow for positive and negative room conditioning or where the application required a specific volume for proper ventilation or contaminant capture.

Pure Air Systems continues to use all metal housings for their Air Filtration systems and these powder-coated housings are designed to last up to 20 years and longer. We still have systems in the field that have been running since the late 1980’s.

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

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Positive About Negative Pressure

The word negative is always associated with something bad or the lack of something good. It is the opposite of the word positive.

In the world of minimizing contact with harmful airborne contaminants the word negative is often used in conjunction with negative air pressure, or making a specific room or area negative.

Hospitals have rooms where they isolate a patient that has a highly communicable disease where the air in the room is constantly being filtered through a HEPA based air filtration system and air handler. The pressure in the room is slightly lower than the air outside the room so when the door to the room is opened all the air moves into the room thus keeping any airborne pathogens from escaping the room.

Negative pressure rooms are common at the CDC in Atlanta and in R&D labs around the world where highly toxic or corrosive chemicals and materials are used for product development. These rooms use both HEPA and Carbon or other adsorptive materials to remove airborne particulate as well as gaseous pollutants.

Pure Air Systems, based in Indianapolis, Indiana manufactures high end, commercial grade HEPA and Carbon based, fan-powered air filtration systems which are used in many of these negative room applications. Their systems can move from 50 CFM up to 2,000 CFM of air through the scanned HEPA filters where in many cases the units themselves are the only air moving device creating the negative pressure.

These systems can also be attached to or be part of the air handling units working in conjunction with cooling and heating systems.

In many instances homes can be under negative pressure when the HVAC system is not properly balanced making the home slightly negative which in this case is bad. That means every time the air handler fan comes on the house tends to draw some air in from the outside which means you are bringing in warm, moist or cold air all the time. Getting your HVAC systems balanced is recommended.

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.

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Pure Air Systems Website Update

In 1995 Pure Air Systems purchased its existing URL. At that time there were few companies with a URL and most people had little knowledge of this digital process and even less of an understanding of what to do with the URL. Back in that era there were few websites and only Windows as a major operating system. IOS was still in its infancy.

By 1996 the internet was beginning to show some power in providing real information to a growing computer savvy public. By 1997 about 10% of all new customers for PAS were linked to our very new website that had a few photos and some text.

By 2000 almost 63% of our business was derived from customers viewing our website. We started to ask for their feedback on the information we provided in the site and made those changes accordingly. Over the years we added more products to the website then in 2007 we made a major change to the entire site.

Now, 2018, we are making another major change to the site. This will incorporate more photos and graphics with more bullet points and easy to understand information on how the filtration systems work and their applications including our Pure Air University section that provided a wealth of information on everything “air filtration.”

The website re-design should be in place sometime in May, 2018. The site is being modified by a very experienced team that has created some of the more impressive sites on the internet.

One of the main issues that will be addressed with the new website is the fact that Pure Air Systems only makes one grade of air filtration device. And that is commercial grade. There is no residential grade systems so everyone who buys one of our systems gets the same units we sell to the commercial world.

For more information on our product line please go to: http://pureairsystems.com or call us on our toll-free number at: 800-869-8025.

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Pure Air Systems Made In The USA

There is a long history of issues with much of manufacturing moving out of the US. For the most part a lot of the reasons were high  labor costs and corporate greed. In many cases the Asian markets had developed more companies that did injection molding and machining processes that were considerably less expensive with the ability to change product parts almost over night.

For many items imported into the US there will be little change of manufacturing venue. Technology has afforded countries around the world to make products faster and cheaper than the US. Even countries like Cambodia, Vietnam, and Thailand are now major exporters to the U.S. And, many of the companies that own these operations are U.S. corporations.

Pure Air Systems has been making HEPA based, fan powered air filtration systems in the US since 1985. Everyone of these systems has a made in the USA label on it and all the components are also made in the USA. Knowing that one would think that customers would not consider purchasing any other filtration systems. But that is and was not the case. The PAS line of high end, commercial grade filtration systems is more expensive than the closest competitor but the units are designed to run for 15 to 20 years and they perform exactly as promised. Most of the competitors use cheaper, off shore components and are not made of steel or use the high end ECM variable speed drive motors.

After 32 years PAS has proven that if you make a great product, consistently and deliver what you promise, people and companies will continue to come back and order more. PAS now offers a line of 7 different HEPA systems ranging from the small portable HPS series to our 2000HS Plus units that can move up to 2000 CFM of HEPA filtered air.

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

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