EFS

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Filters for Isolation Rooms and Gaseous Pollutants

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For isolation rooms in hospitals, the main goal is to keep airborne infectious diseases such as tuberculosis from entering the atmosphere. To accomplish that, the air from hospital isolation rooms is filtered on the exhaust side as well as on the incoming side, using a sophisticated exhaust fan system on the ceiling where the air has to go through a minimum of two stages: a pre-filter stage and a high efficiency particulate air (HEPA) stage.

Both particulate and gaseous pollutants cannot be removed by a single air filter. Particulate matter is removed by High Efficiency Particulate Air filters (HEPA). The HEPA filter is the most effective filter in removing 99.97% particulates 0.3 micron or larger.

Gaseous pollutants such as sulfur dioxide, carbon monoxide and nitrogen oxides are removed by using activated carbon filters. Carbon filters such as the carbon v4 bank filter which are used in commercial and industrial buildings, are designed to trap smoke, odors, chemicals and gases from the air. Activated Carbon filters are often used in conjunction with a HEPA filters in public commercial settings such as hospitals, museums and airports to remove the larger air particulates.

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Low Pressure Drop Air Filters

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The low-pressure drop is what equates to the amount of electricity it takes to push the air through the filter. The more electricity or power it takes to push the air through the filter, the higher the pressure drop. Energy is very important in regards to filters because the lower the pressure drop, the less amount of power it’s going to take to push the air through the filter. EFS conducts as much research and development as possible in order to get the pressure drop of high efficiency air filters as low as possible while still being able to effectively filter the air.

When selecting low pressure drop air filters as an upgrade to the HVAC system, decision makers should evaluate total system costs. In addition, a life cycle cost analysis should be conducted, which takes into account initial product cost, operating cost (energy consumption), installation cost (labor), and product replacement cost. Higher efficiency filters, while typically more expensive than commonly used low-med efficiency products, are found in most HVAC systems today.

Most HVAC systems are equipped with filters designed to keep equipment components—such as coils, compressors, fans, and ductwork—clean in addition to creating a cleaner air environment. Higher efficiency air filters typically run at a higher airflow pressure drop than lower efficiency filters . Today, however, technology is emerging to increase filtration efficiency while reducing energy consumption. Although higher efficiency filters have higher initial costs, their benefits offset those costs, and pay for themselves within a year or less. Delivering cleaner air throughout the building has the additional benefit of keeping HVAC system components operating at peak energy efficiency, saving still more in energy and maintenance expenses.

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HEPA Compliant Filters

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HEPA filters are deemed compliant based on the way they are tested. They’re tested by third parties; no manufacturer can test their own filters. In the United States, there are specific labs to send filters to that are government regulated, and they have to test the filters under ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) standards. These standards are constantly being worked on based on the medias that are available.

The filters themselves are regulated and tested, not the manufacturer. For HEPA-grade filters have to be tested through ASHRAE standards in addition to a DOP test. It’s the third-party that is regulated by ASHRAE standard, not the manufacturer.

By definition all HEPA filters are individually certified as to conformance with their target efficiency. The data from the testing is provided on a label on every filters stating test airflow, resistance to airflow and penetration (the inverse of efficiency). Originally HEPA filters were tested using dioctylphthalate, a known carcinogen, as prescribed in the original military testing standard authored to address HEPA filter performance.

Today, manufacturers test each HEPA filter according to methodologies as outlined in Recommended Practices (RP) as published by the Institute of Environmental Sciences and Technologies (IEST). Filters are challenged with particles of specific size and the penetration of each filter is so recorded.

The minimum level of HEPA filter performance is an efficiency of 99.97% when tested on particles 0.3 micron in size. As technology has advanced, and the need of ultra clean air in industries such as microelectronics and pharmaceutical has evolved, filters have become available that can provide a performance of 99.999995% efficiency on particles 0.12 micron is size. Because a HEPA manufacturer cannot be responsible for transportation of the filters to the user or handling and installation, many applications require additional in-place testing to ensure the installed integrity of the HEPA filter.

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Who Is a Good Fit To Become an Air Filter Distributor for EFS?

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Virtually any distributor who’s looking for a good filter brand is a fit for EFS; however distributors who have the ability to stock are going to benefit the most. Distributors with the warehouse space to stock large quantities of filters enjoy being able to provide their customers with short lead times to help ensure their customers experience minimal (if any) downtime which is a very positive selling point.

Distributors with the capacity to stock also enjoy a larger, faster return on their investment since their per-filter cost is lower. In addition this provides distributors with the option to offer their filters at a reasonable, cost-effective price point equating to greater sales and faster ROI.

We’re currently looking for stocking distributors to cover the East Coast of the United States, Texas, and pretty much anywhere in the United States other than Chicago and the West Coast which are already covered.

It is important that distributors the EFS line carry additional brands in order to offer customers many types of air filters. The right distributor can also help to ensure that your equipment is protected from damage while ensuring maximum production with less downtime. By choosing a professional pocket filter distributor, we expect that our business will be better positioned for meeting production goals.

Who Is a Good Fit To Become an Air Filter Distributor for EFS? Read More »

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Carbon V-Bank Filter for Air Purification

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Carbon V-bank filters are most commonly seen in various industrial applications. They can be used in existing HVAC systems, specified for new construction or easily retrofitted. Carbon V-bank filters are helpful to remove different kinds of particles, impurities or bad odors present in the air or its surroundings. These filters bear immense significance especially for air pollution or odor from commercial industries which are higher than normal. Since most of the industries such as chemical, pharmaceutical, construction, fertilizers, use various hazardous raw materials, installation of carbon V-Bank filters is vital for ensuring workers’ health and eco-friendly settings.

Carbon V-bank filters are considered as one of the most absorbent filters as the filtration media has tiny absorbent pores that trap the pollutants when they pass through the filter. The same happens with gaseous odors such as diesel fumes, tobacco smoke, cooking odors, auto exhaust, etc. Odors get trapped in the carbon that is embedded within the filtration media as soon as they enter the filter. Carbon V-bank filters are also highly effective for removing contaminating gases from acetone, paint fumes, gasoline, SOx, NOx, VOCs and Ozone–gasses that are harmful to human health and products.

The carbon V-bank filters are sometimes seen working alongside other filters such as HEPA filters where they work in combination to trap and remove smaller particles or pollutants.
One of the greatest features of carbon V-bank filter is that it doesn’t deposit the air contaminants back in the air, as do some other air filters. This makes them particularly effective in hospital and healthcare settings. As per the latest researches, it has been revealed that carbon V-bank filters are best suitable for removing odors. However, carbon V-bank filters when used in conjunction with other filters like HEPA filters, become highly effective for removing allergens, mold, dust, pet dander, and other contaminants from the air.

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Leading The Commercial Filter Industry

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The #1 commercial filter manufacturer Engineered Filtration Systems (EFS) is one of the most innovative air filter brand in the industry. At EFS, we are determined to always improve and innovate our products to exceed, not only our competition but our own expectations.

With our V-Bank filter for example, when we first came out with this filter it was the highest efficiency on the market and the lowest pressure drop at the time. First and foremost developing break through filtration processes and using the highest quality materials was, and is, our highest priority. However, through the years filter manufacturers have done their due diligence progressing their techniques, but EFS standards soar above market expectations.

Another example of our tenacious pursuit for quality is our reverse pocket filter. They work well as a pre-filter, but other manufactures encountered some difficulty where many systems don’t allow for the depth of a pocket filter. The shortest version pocket filter available is 12 inches deep and in the pre-filter areas of many handlers, there is a limitation in depth which is why the largest pre-filter you find in many standard HVAC air handlers is a 4 inch deep pleat. 

There were many hospitals, for example, that could not upgrade to a standard pocket filter which helps them in regards to filtration and reduces the pressure drop, and last up to 4 or 8 times longer than a standard pleated filter. So we developed a reverse-pocket filter which is installed in a reverse configuration which doesn’t require the depth (12″ or greater) necessary for a standard pocket filter which is just another example of our attention to detail. In addition, the EFS filters have 100% synthetic filter media with non-shedding fibers that resists moisture, chemicals, and bacterial growth. We also have the only bag filter with an extruded aluminum frame which gives the filter enhanced stability, and ultrasonically sealed pocket seams prevent leaks & tears. We consider each facet of the air filtration industry and leave no stone unturned in providing a clean and healthy environment for our customers.

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Which industries Use Commercial Air Filters ?

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Our filters serve numerous applications such as hospitals and health care facilities, bio-tech and electronics manufacturers, gas turbine power plants, clean room facilities, museums, schools and universities, commercial and government buildings, industrial manufacturers and many others. There aren’t many locations that wouldn’t benefit from the application of air filtration because clean air is clean living.

When deciding if it’s absolutely necessary however, there are a few questions you should ask yourself. Is your destination near any industrial polluting plants? Are the products or machinery in your building susceptible to damage from particulates? Is there any children or elderly in your building? Do your customers or tenants complain about a lack of air quality? These are all basic examples of industry traits that would make air filtration imperative.

Where filters are truly relied upon are places such as:

Hospitals: The highest priority for filtration in hospitals should be maintaining clean and healthy air for its patients and staff. Providing an environment using competent air filtration equips patients, staff and visitors with an added degree of protection from airborne microorganisms that can cause infection, disease and even death.

Education: A classroom environment requires quality air filtration. Protection against atmospheric particulate matter which consists of microscopically small solid/liquid particles suspended in the air that can penetrate the respiratory system and damage students lungs over time.

Hospitality industry: most air pollutants comes from foot traffic, open and closing doors, visitors carrying particulates from around the globe and the production of food. These impurities include bacteria, fungus, atmospheric dust etc.

Which industries Use Commercial Air Filters ? Read More »

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What is a HEPA Filter?

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High-efficiency particulate arrestance (HEPA) is a type of air filter. When a Filter meets HEPA grade requirements they have several possible applications including clean rooms, medical facilities, aircraft and homes. The filter must appease certain standards of productivity set by the United States Department of Energy. To qualify as HEPA by US government standards, an air filter must remove (from the air that passes through) 99.97% of particles that have a size of 0.3 µm.
HEPA filters are composed of a mat of randomly arranged fibers. The fibers are typically composed of fiberglass and possess diameters between 0.5 and 2.0 micrometers. Key factors affecting its functions are fiber diameter, filter thickness, and face velocity. These particles are trapped (they stick to a fiber) through a combination of the following three mechanisms:

Interception: Where particles following a line of flow in the air stream come within one radius of a fiber and adhere to it.

Impaction: Where larger particles are unable to avoid fibers by following the curving contours of the air stream and are forced to embed in one of them directly; this effect increases with diminishing fiber separation and higher air flow velocity.

Diffusion: An enhancing mechanism that is a result of the collision with gas molecules by the smallest particles, especially those below 0.1 µm in diameter, which are thereby impeded and delayed in their path through the filter; this behavior is similar to Brownian motion and raises the probability that a particle will be stopped by either of the two mechanisms above; this mechanism becomes dominant at lower air flow velocities.

What is a HEPA Filter? Read More »

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Who uses V-Bank filters?

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A V-Bank filter is what we call a mini-pleated filter; it’s a high-efficiency filter with a higher media area than a standard box filter. The standard size is still 24 x 24 x 12, like the box filter, but there’s a big difference between the mini-pleated V-Bank filter and a box filter: most box filters have a metal frame and don’t have a large amount of filtration media. The actual pleat packs, which is what the media is manufactured into, are installed into the V-Bank filter in a ‘V’ shape – hence the term V-Bank. The majority of ours are 4 V’s.

The frames of those V-Banks are plastic, and though the majority of EFS V-Bank filters have both synthetic and a glass-laid media available, we see much more use for the synthetic media as it does not respond to moisture, which is important due to our work in high-humidity areas. Hospitals, gas turbine power plants, clean rooms, universities, data centers, airports, hotels, micro-electronics or pharmaceutical manufacturers, and pretty much any application that has a true air handler could use a V-Bank filter as their final filter. “We see in many instances where the V-Bank filter is the final filter and a standard pleat is a pre-filter”.

It is especially crucial in hospitals and cleanrooms to maintain a sterile environment and remain confident that airborne diseases or toxins are being filtered correctly and efficiently. Making the V- Bank filter the perfect fit using its high efficiency, low-pressure drop, long filter life and synthetic filter media that resists moisture. They are also designed to withstand high velocities and turbulence making them durable in most air handling systems. In any case, the V-Bank filter possesses very few cons in its application for air handing units.

Who uses V-Bank filters? Read More »

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What are evaporating cooling pads?

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EFS primarily uses what would be considered evaporative cooling pads. Evaporative cooling pads are used to cool the air and keep moisture out of it. Their applications are primarily in gas turbine power plants, but there have been requests for them to be used in pig and mushroom farms, presumably for the same purpose.

Cooling through evaporation is a natural occurrence. The most common example we all experience is perspiration, or sweat. As perspiration evaporates it absorbs heat to cool your body. The principle underlying evaporative cooling is the fact that water must have heat applied to it to change from a liquid to a vapor. When evaporation occurs, this heat is taken from the water that remains in the liquid state, resulting in a cooler liquid. Evaporative cooling diverges from ordinary air conditioning setups which use vapor-compression or absorption refrigeration cycles.

Evaporative cooling works by utilizing water’s large potential of vaporization. The temperature of dry air can be depressed extremely through the transition of water to vapor (evaporation), which can cool the environment using less energy and proving to be much more efficient than refrigeration. In significantly dry climates, evaporative cooling of air has the extra benefit of modifying the air with added moisture for the convenience of present occupants. The cooling possibilities for evaporative cooling is dependent on the wet bulb rule, the difference between dry-bulb temperature and wet-bulb temperature. In barren climates, evaporative cooling can slim energy consumption and reduce equipment needed for conditioning as a substitute to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still gain favor of the evaporative cooling process without effecting humidity. Passive evaporative cooling strategies offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.

What are evaporating cooling pads? Read More »

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