Air Filters For Residential HVAC Systems

In today’s fast paced society we often don’t think about common products or processes. We assume that anything we buy or use will operate as indicated and that we should be able to utilize the product with a minimum of effort and retraining. Our home heating/cooling system fits into that category. We turn on the heating or cooling cycle from our thermostat and expect the temperature in the home to match the temperature setting. We do this without much thought. 

When the heating or cooling doesn’t cool or heat adequately we automatically contact our local HVAC contractor rather than even attempt to diagnose the problem by ourselves. While the problem maybe a major malfunction of a component, often times the reason for the lack of cooling or heat is a plugged air filter. 

The blower/motor assembly on your HVAC system is rated at a certain motor horsepower and air flow, as measured in CFM. These are matched systems for the cooling coil and heating system based upon the size of the home. This includes the static pressure the fan sees to pull and push the air throughout the duct system. If the filter is plugged it will take more energy to pull the air through the filter and since the motor/blower assembly is designed to handle a limited amount of static pressure for the CFM it moves. 

If the static pressure capability for the blower/motor is 1.5 ” at rated CFM capacity and the plugged filter adds another .5 to 1.0″ of static load ( which it can do ) it will significantly reduce the air flow through the system as much as 50%. That means it takes much longer to heat or cool your home and it also puts a strain on your system in total. And, it will significantly reduce the ability to remove humidity from the home. Checking the condition of your air filter on a regular basis should be part of your routine.

Pure Air Systems makes a complete line of fan powered HEPA based air filtration systems. We can help you choose the right filter or filtration system for your home to ensure you always have your HVAC system working at its full capacity and that the air in your home is always well filtered.

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 contact us on our toll-free number at 800-869-8025.

 

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Pure Air Systems HEPA Filtration System Rescues California Home During Fires

As everyone knows, being around smoke from a forest fire is extremely difficult and dangerous as smoke inhalation can be deadly. For California this past year, the forest fires have been nothing short of horrific. Many homes were lost and smoke hung in the air for weeks in many areas of California.

Pure Air Systems, an Indiana based company, has been making fan powered, HEPA based air filtration systems since 1985. Their systems are capable of being used either in conjunction with an existing HVAC system or as stand alone units. The partial by-pass configuration of the units allow for complete filtration of the home environment while also adding the ability to introduce outside, filtered fresh air to pressurize the home.

A homeowner in the San Francisco area purchased a PAS Model 600HS HEPA Plus system to do just that. His ability to bring in outside air through the 600HS unit and pressurize his home allowed him to stay inside and almost eliminate any smoke or odor from coming into his home. In fact, many of his neighbors also came to his house to escape from the smoke that was everywhere in the SF Bay area.

The 600HS unit has three filters. A dual layer ring panel filter to capture large particles and keep the HEPA clean, a 10 lb carbon filter to remove odors and a scanned 99.99% commercial grade HEPA filter to remove sub micron particulate. Pure Air Systems also makes larger versions of this filtration system ranging from 50 CFM to 2,000 CFM. These systems have been on the market for over 34 years and are the best performing HEPA based air filtration systems on the market today.

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 Moves Into 34th Year Of Selling HEPA Air Filtration Systems

In 1985, Don Musilli founded a company to sell high end HEPA air filtration systems to the residential market. HEPA filtration at that time was somewhat limited to the micro-chip manufacturing industry, asbestos abatement companies, medical operations and some industrial applications. The residential market was using standard pleated, card board box framed general duty filtration media filters or electronic air cleaners. These air filters were located either in the main return air grills or at the point where all the return air entered the main air handler ( HVAC unit ) and were designed primarily to remove very large airborne particles and to keep the cooling coils and fan blades clean.They did little to remove the smaller, respirable sized particulate that could create health issues for many homeowners.

Whether we are indoors or outside, we are breathing air that contains various sizes of particulate. The larger particles. those that you can see with the naked eye, are usually 20 microns in size of larger. ( for comparison, your hair is 100 microns in diameter ). These larger particles are aspirated into our lungs and the majority of them are exhaled out. The smaller, sub-micron particles however, ( those less than 20 microns in size ) tend to stay logged in the lung linings and mucus membranes. These smaller particles may represent a wide range of organic and inorganic materials including pollen, pet dander, ragweed, bacteria, viruses and industrial pollution. For those individuals that suffer from allergies many of these airborne particulate are the primary cause of their respiratory dysfunctions.

Pure Air Systems pioneered the use of HEPA filtration systems with their first model 600H unit.that included a true, scanned HEPA filter rated at 99.99% removal of all particles 0.3 microns and larger, a wire framed ring panel prefilter ( to keep the HEPA clean ) and a true carbon filter to remove odors and gases. These systems were designed to attach to the return air side of a ducted HVAC system using the partial by-pass concept. This unique concept allowed homeowners, for the first time, to use a true HEPA filter system on a residential HVAC unit. These HEPA systems cleane all the air in the house up to 24 times a day and remove a very large percentage of the sub-micron, airborne particulate. 

Thirty Four years later, PAS has added 6 more HEPA, fan powered, air filtration systems to its stable and over 10,000 of these units have been installed in homes and offices across the U.S. and Canada. 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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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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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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