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cartridge filters with background image of industrial plant

Cartridge Filters in Gas Turbine Inlet Air Filtration Systems

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Canister, cartridge, conical, and cylindrical (round) industrial air filters help clean intake air of inlet air filtration systems for gas turbine power plants. Their media can be depth-loading or surface-loading.

Selecting the proper gas turbine inlet air filtration system and inlet air filters cannot be underestimated, as these systems drive turbine efficiency and output.

Importance of Gas Turbine Inlet Air Filtration Systems

Inlet air filters protect, optimizing efficiency and maximizing the turbine’s capabilities. Operational savings include decreased maintenance and parts replacement and minimum gas turbine downtime, ensuring greater, more consistent power and mechanical drive generation.

High-efficiency industrial air filters are typically part of the last stage of gas turbine inlet air filtration. Engineered Filtration Systems’ high-efficiency air filters clean the smaller particles from inlet air that lead to the following issues:

• Fouling: Particles 2 – 10 micrometers in size, such as sea salts, oil mists, smoke, and carbon, build up along low flow-rate locations in the airflow path and along compressor blades. Especially hot conditions can cause particle fusion. During fouling, clearance changes, cooling passages clog, and rotating balance is disrupted. Fouling can be corrected with washing or mechanical cleaning, but this will not restore the original condition of the gas turbine.

• Erosion: Larger solid and liquid contaminants change aerodynamic metal surface geometry by removing metal particles, changing smooth surfaces to rough ones. Cross-sectional metal areas cannot withstand stress as well. Air flow path deviates and clearance changes. Erosion damage is not reversible, so damaged components must be replaced.

• Corrosion: Hot and cold corrosion occurs when chemically reactive particles adhere to gas turbine surfaces. In hot or high-temperature corrosion, combustor and turbine components experience accelerated oxidation due to salts and sulfurs. In cold corrosion, salts, acids, and gases like chlorine and sulfides mix with air moisture and corrode the compressor. Corrosion can also creep into defects in other parts of the gas turbine, such as cracks, accelerating the defect. Corrosion requires parts replacement.

• Secondary Foreign Object Damage: Secondary Foreign Object Damage (FOD) occurs when debris that passes through the first stages of inlet air cleaning breaks apart into finer particles. These particles can then be passed in the airflow through filters. Pre-filters and additional air cleaning mechanisms of the inlet air filtration system also protect turbomachinery from these and from primary FOD.

An advanced gas turbine inlet air filtration system contributes greatly to slower turbine power and parts degradation. When inlet air quality is low, this degradation occurs sooner.

Filter Media and Loading

Gas turbine inlet air filtration systems for GE LM6000, as well as many GE Frames (i.e., 7EA, 7FA, etc.) incorporate canister or cartridge air filters; these can be static or self-cleaning.

Static and barrier gas turbine inlet air filtration requires consumable, depth-loading filters. For self-cleaning, if the concentration of dust is low or if particles are excessively sticky, cleaning of surface-loading air filters will not appreciably reduce drops in pressure.

Historically, self-cleaning inlet air filtration employing conical and cylindrical filters depended upon surface-loading filter media, because these types of filtration were originally created for high-dust environments. Today’s ideal cartridge filters must remove hygroscopic particles found in the high-humidity environments of most modern self-cleaning gas turbine inlet air
filtration, though.

Depth-loading media is the perfect solution for removing hygroscopic particles in humid or frigid environments, especially in coastal areas with greater ambient salt.

Conclusion

Gas turbine power plants depend on advanced, high-efficiency inlet air filtration systems to prolong GT lifespans and maximize output. Contact Engineered Filtration Systems online for more information on industrial air filters or call us at 1-800-796-4337. You can also view our products here to learn more.

Cartridge Filters in Gas Turbine Inlet Air Filtration Systems Read More »

bag and pocket filter

The Difference Between Pocket Filters and Bag Filters

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The terms bag filter and pocket filter are often used interchangeably – but there is a difference between these two industrial air filters.

Typically, a bag filter has a metal frame (galvanized steel or aluminum) with anywhere from 3-6 pockets of micro glass or synthetic filtration media. The ‘pockets’ of a bag filter are not ‘rigid’ and sometimes have a tendency to collapse in the air stream, especially under high airflow.

Engineered Filtration Systems (EFS) has a soft pocket bag filters which is uniquely designed with an extruded aluminum frame for added durability. In addition, the seams of the pockets are ultrasonically sealed, as opposed to sewn like most bag filters, to prevent leakage and reduce tearing. Bag filters come in a range of efficiencies from MERV 8 to MERV 14.

Rigid Pocket Filters

A pocket filter, also known as a rigid pocket filter, on the other hand is made with a high-loft synthetic media so the ‘pockets’ stay rigid in the airstream and will not collapse. In addition, the frame (also known as the header) of most pocket filters is plastic which eliminates the possibility of corrosion.

Pocket filters can be used to remove both dust and fine particles and have a very high-dust holding capacity.

EFS’s rigid pocket filters come in two efficiencies; the F5 Rigid Pocket Filter is a MERV 8 and the F6 Rigid Pocket Filter is a MERV 11. Depth-loading, synthetic media provides exceptional dust holding capacity. The synthetic media consists of non-shedding fibers that are specially developed to resist moisture and chemicals making it resistant to bacterial growth.

The polyurethane header ensures leak-proof bonding of the pockets to header and eliminates the possibility of corrosion.

All EFS Rigid Pocket Filters are progressively structured and provide exceptionally low pressure drop at high efficiency levels. The air filter pockets are self-supported, stay rigid in any air stream and can withstand extreme humidity and high velocities as well as turbulence. This air filter is free of metal parts and that reduces the risk of corrosion and punctures.

Call Engineered Filtration Systems today for the best commercial rigid pocket air filters.

The Difference Between Pocket Filters and Bag Filters Read More »

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Increase Gas Turbine Output at Your GT Power Plant with Evaporative Cooling

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Evaporative cooling pads are a cost-effective solution to increasing the power output of gas turbines in warmer areas or during hot summer months. Other methods of cooling inlet air can prove prohibitively expensive or inefficient. In areas where the air is hot and especially humid, a combination of evaporative cooling and other cooling methods may be necessary.

Hot Weather and Power Output

Gas turbines can produce as much as 20 percent less energy on a hot day than on cold days. On hot days, air is less dense. Power output decreases, because the flow of mass through the turbine decreases with hotter air. Although the turbine may be moving the same volume of air at a certain shaft speed, the power output will depend on mass flow of air. Hotter, less dense air provides lower flow of mass through the turbine, thus decreasing power output.

Evaporative Cooling

Evaporation converts liquid water to vapor in what is called a phase change. During this change in phase from liquid to vapor, water will either absorb or release heat. A pound of water changing from liquid to vapor will consume 1160 BTUs of heat. A hot breeze on a scorching summer day will feel cooler due to the evaporation of perspiration off the skin, thus absorbing heat and cooling the body. This is evaporative cooling.

Evaporative Cooling Pads

Evaporative cooling pads utilize the principle of evaporative cooling and are the most commonly used method of cooling gas turbine inlet air. The media is made of a wetted, cellulose fiber pad in a honeycombed design. When hot inlet air enters the gas turbine system, the wetted, honeycombed surfaces of the media cools the inlet air.

In areas without relatively low humidity, evaporative cooling pads can increase power output of gas turbines by as much as 15 percent. In especially hot and very dry environments, power output can be increased by as much as 60 percent.

High humidity can decrease the cooling effect of evaporative cooling pads. Even with high humidity, though, evaporative cooling pads can increase power output by as much as 10 percent. In areas with very high humidity, operators may wish to employ a combination of evaporative cooling and another cooling method, such as high-pressure fogging.

Costs of Evaporative Cooling

Evaporative cooling is a cost-efficient solution to cooling inlet air compared to other methods like a chiller installation. Evaporative cooling pads are relatively inexpensive, but they do require lower air velocities than other cooling methods.

Some facilities may need to retrofit air ducts to lower air velocity so that water is not stripped from the cooling media, causing wetting of ducts and possible compressor blade fouling. Retrofitting for evaporative cooling is generally inexpensive though, and operating costs of using evaporative cooling are low compared to other cooling methods.

Conclusion

Evaporative cooling pads utilize natural processes to cool inlet air, thus increasing power output of gas turbines in high heat environments relatively inexpensively. Engineered Filtration Systems’ evaporative cooling pads are specially coated to resist deterioration and prevent algae and minerals from adhering to the pad.

For more information about increasing power output with evaporative cooling, contact Engineered Filtration Systems online. Or, call us, at 1-800-796-4337.

Increase Gas Turbine Output at Your GT Power Plant with Evaporative Cooling Read More »

clean room with worker using equipment

Why Cleanrooms can Benefit from High Efficiency V-Bank Filters

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A ‘clean room’ is a controlled environment generally used in the pharmaceutical industry for scientific research. As the term suggests, a clean room maintains a very high level of air quality, free of pollutants such as dust particles, airborne organisms and chemical vapors.

The ambient air outside in a typical city environment contains around 35,000,000 particles per cubic meter. According to ISO standards, an ISO1 clean room permits no more than 12 particles per meter cube. Many organizations high-efficiency V-Bank filters to create this controlled environment.

High-Efficiency V-Bank Filters

V-Bank filters usually come in the same size as box filters. However, there is a big difference between the two in terms of usage and material. The V-shaped pleat pack is installed into a V-Bank filter; hence the label ‘V’ is attached to the name.

The state of the art V-Bank filter technology allows organizations such manufacturers of electronic components and pharmaceuticals to trap particles that are 0.3 microns or larger in size. V-Bank filters resist moisture, have a long life, and provide a minimal drop in air pressure. The V-Bank filter is corrosion-proof as it does not include any metal parts in the whole assembly. The filter is lightweight and can be transported conveniently without any hassle.

Key Benefits

– Since the V-Bank filter is designed for low-pressure drop in airflow, it allows organizations to reduce energy consumption.
– The air that passes through the V-Bank filter contributes to maintaining Indoor Air Quality (IAQ).
– Owing to their light weight designs, V-Bank filters are easy to carry and install at any location.
– Since the V-Bank filter is made of synthetic material and does not use any metal component, it is corrosion free and has a long life.
– The V-Bank filter is designed in such a way that it is able to tolerate any turbulence or change in air velocity ensuring optimum performance even under significant load changes.

Industries using V-Bank Filters

V-Bank filters are ideally used for helping to create a clean room environment for microelectronics and pharmaceutical manufacturers.

High-Efficiency V-Bank filters can help provide good indoor air quality for a clean room environment. The efficient use of plastic and synthetic material in their design makes them an ideal filtering device for sensitive environments such as scientific and microelectronic clean rooms.

Contact Engineered Filtration Systems for the most efficient V-Bank air filters on the market today.

Why Cleanrooms can Benefit from High Efficiency V-Bank Filters Read More »

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Understanding HEPA Filter Standards

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One type of high-efficiency air filter that was commercialized in the 1950s is the HEPA filter, an acronym for High Efficiency Particulate Air.

These air filters must satisfy a certain standard of high efficiency such as those developed by the US Department of Energy (DOE). A critical role is played by these filters for facilities in such industries as medical, automobile and aircraft.

What does a HEPA Filter do?

HEPA filters fibers are typically comprised of entwined, randomly arranged fibers typically composed of fiberglass. Key factors affecting its functions are: fiber diameter, filter thickness, and face velocity. A HEPA filter is specifically designed to target much smaller pollutants and particles that become trapped to fibers. These air filters are normally between 0.5 and 2.0 micrometers.

It is important to note that HEPA filters work to capture fine particles but do not filter out gasses and odor molecules. To filter volatile organic compounds, chemical vapors, cigarette smoke etc. it is best to use an activated carbon (charcoal) filter in addition to the HEPA air filter. Note that the majority of Engineered Filtration Systems (EFS) HEPA filters run at 99.99″ efficiency @ 0.3 micron.

HEPA ClassRetention TotalRetention Local
E10> 85%—
E11> 95%—
E12> 99.5%—
H13> 99.95%> 99.75%
H14> 99.995%> 99.975%
U15> 99.9995%> 99.9975%
U16> 99.99995%> 99.99975%
U17> 99.999995%> 99.9999%

A common misconception is that HEPA filters act like a sieve where particles smaller than the largest opening can pass through. Unlike membrane filters at this pore size, HEPA filters target much smaller pollutants and particles that stick to fibers through mechanisms including Interception, Impaction and Diffusion.

Interception
Interception means particles follow a line of flow in an air stream and adhere to fibers within one radius.

Impaction
Impaction is when larger particles cannot avoid fibers by following a curving contour in the air stream and are forced to embed; an effect that is increased with higher air flow velocity.

Diffusion
Diffusion results from the collision of gas molecules by small particles that are delayed on their path through the filter. This reaction raises the probability that either interception or impaction stops particles.

HEPA filter ratings apply to highly efficient air filters that can attain minimum performance standards equivalent to the National Institute for Occupational Safety and Health N100 rating for respirator filters.

Using the help of professionals such as EFS who follow the required standards safeguards your facility and ensures you meet government requirements for air filtration.

More information on the EFS brand of HEPA air filters can be found here

Understanding HEPA Filter Standards Read More »

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The Next Level of Filtration: Carbon Media

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True to our value for innovation, EFS is excited about our new commercial filtration solution. Whether you need a casino air filtration product or you require an air filter for industries involved in manufacturing or preserving the quality of your product, our newest carbon blanket media filtration will be of significant benefit.

Carbon filtering is a method of purification that uses a piece of activated carbon to remove odors and pollutants utilizing chemical adsorption. The large surface area of activated charcoal air filtration roll media allows it to ‘adsorb’ numerous odors, gaseous pollutants and particles.

When certain odors or gaseous pollutants pass through the activated carbon media, they are adsorbed which prevents the odors from entering the airstream. Carbon-activated air filtration media can help reduce/eliminate odors; particularly diesel fumes from loading docks, wildfire smoke fumes, fumes from helipads, cigarette smoke, roofing tar, outdoor air pollution and more. Carbon filters are a quick solution for improving indoor air quality especially after emergencies (i.e. wildfires), even for non-standard air handling systems.

Each square foot contains 105 grams of activated carbon in our AC105 media. The normal thickness is 0.40” and the standard roll size is 48”x 66’ with initial resistance (300 FPM) of 0.54” w.g. We offer either rolls or pre-cut pieces to fit your precise size and shape needs.

Activated carbon air filtration media is a low-air resistance, non-bypass, disposable media for light-, medium- or heavy-duty applications – all good reasons to choose this new resource. The new AC105 is perfect for hospitals, food manufacturing facilities, commercial kitchens, plus commercial as well as industrial installations.

Air cleaners, either electronic or mechanical, are another ideal candidate for this upgrade. Also consider air intakes on rooftops, near loading docks, heliports/ground level operations. Plus, commercial appliances, ductless range hoods, bath fans and over-the-range (OTR) microwave ovens can all benefit from the AC105 product.

Have a question? Engineered Filtration System can be reached at 323-832-8316 or online at EngineeredFiltrationSystems.com.

The Next Level of Filtration: Carbon Media Read More »

tailpipe and exhaust of vehicle

Gas Phase Filters for Odor Control

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Gas-phase air filters remove gases and odors by using a material called a sorbent, such as activated carbon, which adsorbs the pollutants. Typically, these can remove one or more gaseous pollutants from the airstream that passes through them.

The EFS Carbon V-Bank (GPC.V) filter is designed to efficiently remove particulates that contaminate the indoor air as well as a wide range of odors at high air flows.

Gas Phase Filtration Media

The material installed inside an air filter is referred to as the gas phase filtration media. Substances found in small, porous pellets such as sodium permanganate and activated carbon are widely used in filtration media.

Sodium permanganate is used as media because it boosts the absorption rate for a longer duration and targets contaminants such as sulfur oxides, hydrocarbons, formaldehyde, volatile organic compounds (VOCs) and nitric oxide.

Gas phase filtration media such as activated carbon purifies the air and serves as an agent to remove odors from such materials cigarette smoke, smoke/ash from wildfires, diesel fumes and gasoline, among others.

Activated carbon is one of the strongest absorbents of these kinds of contaminants and creates superior indoor air quality.

The type of media you choose for your industrial air filtration system will depend upon the nature of chemical concentration in the air of any given area of your facility. As you can tell, it is best to consult a professional manufacturer or reseller who can not only do a site survey at your facility, but also install the air filtration system for you as well as maintain it.

Volatile Organic Compounds

VOCs include gases such as formaldehyde, methylene chloride, benzene and perchloroethylene that can be emitted from multiple sources including adhesives, carpeting, paints, copy machines, pesticides, and cleaning products, among others. Not all VOCs cause odors but can still be objectionable to people as well as can damage equipment.

Research has shown that some VOCs can also cause chronic and sometimes acute health effects when people are exposed to them at high concentrations. Often health effects include: eye, nose and throat irritation, headaches, fatigue, dizziness, and nausea.

Environments that Benefit from Gas Filtration

  • Hospitals, Medical Facilities
  • Schools, Universities
  • Museums and Libraries
  • Commercial, Office Buildings
  • Microelectronics, Cleanrooms
  • Pharmaceutical, Laboratories
  • Hotels, Casinos
  • Airports and Transportation
  • Manufacturing and Industrial Complexes
  • Gas Turbine Inlet Air Filtration
  • Waste, Water and Sewage Treatment Facilities
  • Paper and Pulp
  • Food Processing Plants
  • Petroleum and Oil Refineries
  • IT/Server rooms, Data Centers
  • Storage Facilities

Gas Phase Filters for Odor Control Read More »

light bulbs being manufactured

Industrial Air Filtration Market

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According to several current industry reports, the demand for high-performing, energy-efficient air filtration products is expected to increase exponentially. Grand View Research, Inc., states that the global industrial air filtration market will reach $6.08 billion by 2025. In addition, Global Market Insights, Inc. has this same market exceeding $7.12 billion as early as 2022.

One reason driving this growth are the strict government norms related to health and safety. Product penetration is also projected to increase with high efficiency and performance features expected to propel demand for the next six years. Environmental consciousness has increased among consumers and has spurred strong industrial and infrastructure investments.

Technological advancements have manufacturers creating new filter media to meet the demands of energy-efficient products. New and innovative raw materials are being developed, such as small fibers that are also anticipated will provide new avenues for revenue growth.

Industrial air filters are used to protect sensitive manufacturing processes and reduce the risk of molecular or microbiological contaminations as well as eliminate  hazardous emissions. They are a critical answer for companies required to meet multiple regulations governing this global industry.

Global Industrial Air Filtration Market: Overview

Industries which utilize industrial HVAC air filters include: GT power generation, hospitals, healthcare and medical facilities, pharmaceuticals and laboratories, automobile and industrial manufacturing, microelectronics and cleanrooms, airports, hotels and casinos, to name a few.

By product, air filtration covers several segments such as: HEPA filters (high efficiency particulate air), carbon/gas phase air filters, cartridge filters, dust collectors, mist eliminators and baghouse filters. This market can be further segmented to include food, power, metals, agriculture, woodworking and paper & pulp, plastic, cement and pharmaceuticals.

Reduction in pressure drop, as well as the biological contaminant reduction in filter media, are expected to have a positive impact on demand. Food handling and sanitary regulations are projected to increase demand in the next seven years.

Regional Analysis

Geographically, the air filtration market can be segmented into North America, South America, Europe, the Middle East and Africa and Asia Pacific. Europe is likely to account for a large market share and will continue to do so.

In Europe the food industry is vast and due to the presence of several small-scale businesses, the market is expected to grow even further. Because of environmental policies and the rise in number of manufacturing, healthcare, power generation, as well as oil and gas industries, the market of Asia Pacific is also expected to grow rapidly.

Industrial Air Filtration Market Read More »

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Pleated Filters Estimated To Be Worth 14.9 Billion by 2022

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Thе size оf рlеаtеd fіltеrѕ mаrkеt іѕ аntісіраtеd to tоuсh USD 14.9 bіllіоn unіtѕ till 2022 аѕ рrеdісtеd bу Glоbаl Mаrkеt Inѕіghtѕ. It іѕ rising аt a соmроund аnnuаl growth rate (CAGR) оf 7.5% bеtwееn years 2015 to 2022. Consumers аrе lіkеlу to hаvе аn іmрасt оn thе market tо іnѕtаll thе latest air соndіtіоnіng systems іn rеѕіdеntіаl аnd commercial buіldіngѕ. These fіltеrѕ are аlѕо іmроrtаnt іn HVAC іnѕtаllаtіоn ѕуѕtеmѕ.

Strісt rеgulаtіоnѕ оf еnvіrоnmеnt bесаuѕе оf degradation іn thе quality оf аіr along wіth rіѕіng dеmаnd оf еnеrgу saving are lіkеlу tо boost thе рlеаtеd filter mаrkеt trend. Effоrtѕ fоr rеѕtrісtіng the grоwth of air borne іnfесtіоn аrе аlѕо expected tо fuеl uр thе mаrkеt.

Aраrt frоm іnfrаѕtruсturе, Asia Pасіfіс соuntrіеѕ nаmеlу Indіа, Chіnа, Japan and MEA аrе observing great dеmаnd іn vehicles. Thіѕ dеmаnd wіll bring a bооm іn fіltеrѕ, аѕ thеу рlау a pivotal rоlе  оf keeping air clean in many buildings and other places of work and school. In addition, thе demand оf better energy efficiency and cleaner air іn all іnduѕtrіеѕ іѕ lіkеlу tо boost uр the market.

 Lеt’ѕ take a look on some оf thе еуе-саtсhіng figures, іndісаtіng thе futurе оf рlеаtеd fіltеrѕ.

•          Market of оіl fіltеrѕ еnjоуеd grеаtеr thаn 10% оf оvеrаll dеmаnd in the уеаr 2014 аnd is аntісіраtеd tо rise аt an annual growth rаtе of 7% till 2022.

•          Commercial ѕесtоrѕ whісh соmрrіѕе оf schools, buіldіngѕ and оffісеѕ hаvе noticed 20% оf оvеrаll dеmаnd іn the уеаr 2014 аnd аrе likely to grоw оvеr 6% till 2022.

•          Asia Pacific mаrkеt оf рlеаtеd filters dоmіnаtеd іn the year 2014 аnd hence rеасhеd up to USD 3 billion.

•      Induѕtrіаl applications nоtісеd mаxіmum іnѕtаllаtіоn, thuѕ еаrnіng ѕіgnіfісаnt rеvеnuе of USD 3.5 bіllіоn in the уеаr 2014. Thіѕ ѕесtоr has bееn еmеrgеd аѕ a thriving segment bесаuѕе оf demand in іnfrаѕtruсturе dеvеlорmеnt оf power and cement іnduѕtrіеѕ. Lіmіtаtіоnѕ in еmіѕѕіоn along with HEPA ѕtаndаrdѕ аrе еxресtеd tо drive thе need fоr industrial аррlісаtіоnѕ.

 The glоbаl market оf рlеаtеd filters hаѕ got аn uрѕurgе bесаuѕе of national аѕ well аѕ international participants. Thіѕ mаrkеt is аntісіраtеd tо аttrасt mоrе business in near future duе tо emerging іnduѕtrіеѕ аnd есоnоmіеѕ.

Pleated Filters Estimated To Be Worth 14.9 Billion by 2022 Read More »

rooftop hvac unit fans

HVAC Global Market Trends

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New research has shown the HVAC market will be dealing with major issues including indoor air quality and ecofriendly construction. The latest research report published by Technavio, on the topic of global warming as it pertains to the air conditioning, ventilation and air filtration market, has demonstrated a thorough analysis of the expected trends that are going to impact the industry until at least 2020. According to Technavio, increasing construction projects and demand for more HVAC air filtration replacements in developed economies like the UK and the USA have become major triggering forces in the market. The top three rising market trends that are driving the global HVAC industry include:

Increasing concerns about IAQ within buildings

 Pollution is affecting the indoor air quality and outdoor air quality. Recent developments in construction materials have led to more usage of composites and synthetics. Radiations from devices like copiers and computers are also causing pollution. Poor indoor quality is becoming a leading source of health issues like sick building syndrome, related illnesses, environmental illness or multiple chemical sensitivity (MCS).

costs, while maintaining the quality of products and services provided by them. Green systems are being more popular within the commercial sector, which are continually promoting a productive and healthy environment. The financial advantages gained from such moves are expected to lead towards continuous development

Increasing eco-friendly spending

 The global construction industry is adopting energy efficient and green methods for tacking increasing energy costs, while maintaining the quality of products and services provided by them. Green systems are being more popular within the commercial sector, which are continually promoting a productive and healthy environment. The financial advantages gained from such moves are expected to lead towards continuous development in energy saving technologies. Green building associations and different councils worldwide are also emphasizing the need of having efficient air conditioning and filtration systems for ensuring healthy IAQ and reduced emissions.

Efficient services and maintenance of the HVAC systems

 Maintenance will be one of the top concerns. The well maintained HVAC air filtration reduces energy costs by up to 40 percent, based on equipment and system involved. The HVAC systems contain over 100 components including air filters. 

HVAC Global Market Trends Read More »

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