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Number of Results: 109
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Understanding the basic Operation of a Variable Volume Lab Exhaust System
Lab ventilation systems are traditionally high users of energy based on the objectives of: Safely exhausting fumes and odors from the lab space Expelling fume and odor contaminants above the facility to prevent entrainment back into the lab or neighboring facilities Supplying 100% fresh make-up air
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Considerations for Warehouse Summer Ventilation Systems
Heat builds up in warehouses and distribution centers in the summer months without proper ventilation. Summer ventilation systems exhaust heated air from the warehouse and replaces it with fresh outdoor air. These systems replace the air in the building 1 – 3 times per hour, which minimizes the diff
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Elements of motor sizing
What size motor best suits a fan? It is a common question that is more complex than one would imagine. Many variables exist based on an application. Different technologies also affect the fan selection. The following will discuss torque, horsepower and fan laws. Here is an example. “My direct drive
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Energy Efficiency and Indoor Air Quality Help Transform 94-Year-Old Building
Older buildings have many qualities, such as architectural features not seen on many newer structures. However, few have the energy efficiency required to attract tenants. Learn how Greenheck’s solution improved energy efficiency and indoor air quality (IAQ).
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How to Select the Best Kitchen Hood for a Residential Kitchen in a Commercial Building
Selecting a kitchen hood is a relatively straightforward decision for a restaurant or commercial kitchen. The decision is equally straightforward when purchasing a kitchen hood for your house. One simply selects the features needed and desired that meet the various building codes for the location an
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Be Confident In Your HVLS Fan Selections
High volume, low speed (HVLS) fans are large diameter ceiling fans that circulate large volumes of air at low operational speeds. These fans are increasingly popular because of two main uses-- thermal comfort and energy efficiency. Several companies currently manufacture HVLS fans, providing end-use
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How to Avoid the High-Temperature (and Odorous) Exhaust Associated with Diesel Generators
Electricity. Practically everyone uses it. We power everything from a children's toy to hearing aids using some form of electrical power. Electric power makes life productive and comfortable. Sometimes, it even saves lives. However, what happens when the power is interrupted? For most, it's an irrit
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Why is My Bathroom Mirror Foggy?
Bath Fans and the Importance of Certified Airflow Should a company manufacture products that perform as tested in ideal conditions or conditions based on real-life experiences? This conundrum is an age-old debate. For example, would you buy a new vehicle that advertised its fuel efficiency based on
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When is Make-Up Air Required for Kitchens?
When is Make-Up Air Required for Kitchens? Have you ever left a restaurant smelling like you’ve been cooking burgers for hours? If you have, it could be that the restaurant has a make-up air/exhaust system not working correctly. Selecting the correct make-up air solution for your kitchen can be the
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Provide correct air changes to laboratory, office and warehouse.
Providing a 100% outdoor air ventilation solution can be challenging when a rooftop installation will not work. Learn how Greenheck’s solution allowed for the installation of dedicated outdoor air systems units without costly plenum curbs.
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Dollar Per CFM - Why is it Important
Many options exist for building ventilation. Most options depend on the building’s use. For example, warehouses, distribution centers, and manufacturing buildings often use a combination of gravity and powered fan equipment to ventilate the facility. This method is popular because it offers effectiv
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Certifications, Regulations, and Codes—What are they and why should I care?
Why do some HVAC products have several certifications depending on the application? Why do HVAC projects have some regulatory or code requirements that vary by equipment type and building, and are even specific to each system in a building? Shouldn’t similar products from competing manufacturers hav
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How Many Blades Should Your Ceiling Fan Have?
Upgrading to an overhead high volume low speed (HVLS) fan is one of the most affordable changes you can make in your office, commercial space, or industrial building to improve occupant comfort. They are far more effective in providing comfortable air movement than a pedestal fan and much cheaper th
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A healthier, more comfortable, environment for employees and plants.
A typical outdoor greenhouse can reach 110ºF inside making conditions uncomfortably warm and humid especially during summer months. Air movement is critical to lowering the temperature as well as moisture evaporation to help keep plants healthier.
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Leverage Employee Comfort and Make it a Critical Part of Your Hiring Strategy
“How do I attract and retain employees for my distribution centers?” That’s a great question because the warehousing and storage market segment is growing exponentially. From 2010 through projections for 2022, CAGR for the Warehouse segment have come back at nearly 25% (Dodge Data & Analytics) with
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3 Reasons to Work with a Greenheck Rep
Many in the HVAC industry have a go-to-market model using manufacturer’s representatives as the sales force. Finding every niche in a geographical market requires a large sales team, more than most companies can afford. The manufacturer’s reps provide tremendous value to customers in their local mar
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Podcast: Amplifying UV-C performance for better IAQ
Newsmaker’s Coverage of AMPLIFY™ Overhead fans with Northern Light® Technology Listen as Tyson Sargent, segment manager for Greenheck’s overhead HVLS products, shares valuable information on AMPLIFY™ overhead fans with Northern Light® technology. Once you've listened to the podcast, read more about
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Three Tactics to Improve Indoor Air Quality (IAQ) in Schools and Commercial Buildings
The COVID-19 pandemic has opened the eyes of many regarding the importance of indoor air quality (IAQ) in schools and commercial buildings. Poor IAQ causes illness and other health problems. The impact of poor IAQ becomes worse when you consider this key statistic: The Environmental Protection Agenc
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5 Ways to Create and Maintain Perfect Building Temperature Using the Right Equipment
If you've ever worked when it's too hot or too cold, concentrating, being productive, and getting the job done is tough. Sweat dripping into your eyes or tensed up muscles from the chill can make life exponentially harder. That’s why maintaining a relatively stable and comfortable temperature is so
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EC Motor Fundamentals: What is an EC Motor and the Benefits it Offers
The demand for highly efficient and reliable HVAC equipment continues to grow. Rising energy costs and pressure to minimize downtime have caused the HVAC industry to find better motor solutions to power fans. The electronically commutated (EC) motor is one solution, offering improved reliability and
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Five Reasons to Work with Greenheck
Of the many HVAC equipment manufacturers in the marketplace today, only one manufacturer makes the claim of being the easiest company to do business with: Greenheck. In our 75th year, Greenheck has grown to become a global leader in engineering and manufacturing air movement, control, distribution a
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Effective Strategies for Healthier Indoor Air
The importance of indoor air quality (IAQ) has continued to grow as we focus on improving societal health. Of course, the COVID pandemic has reinforced the need for well-designed ventilation systems that provide improved IAQ. If you are focused on improvement, particularly by reducing the efficacy o
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Exhaust System Stack Design and Plume Rise
One of the critical features of a properly designed laboratory or industrial exhaust system is the exhaust stack. The exhaust stack helps ensure polluted exhaust is dispersed into the atmosphere before it can be re-entrained into building air intakes or settle on occupied areas such as building entr
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HVAC Energy Recovery Technologies: Wheel versus Core
Energy recovery technology is commonly used in industrial, commercial, and institutional applications to provide comfort ventilation. Utilizing energy recovery allows for the supply airstream to be pre-conditioned by the return airstream, effectively reducing the amount of mechanical cooling or heat
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Louver Fundamentals: Form Meets Function
What exactly is a louver? What is its function in a building and an HVAC system? Simply, a louver is a device comprised of blades that permit the flow of air but inhibits the entrance of water or other elements. But simple doesn’t truly get at the form and function of louvers. Selecting the correct
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Fire Dampers 102: Application, Installation, Options, and Accessories
In our Fire Dampers 101 blog post, we discussed the different types of fire damper products and the associated testing and rating requirements. In this post, we will examine the correct application and installation of fire dampers, and review some of the available options and accessories. Applicatio
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How to Improve HVAC Systems by Making a Fraction of an Inch Change
The impact HVAC grilles and registers have in a total ventilation system may seem small compared to the system overall. However, a fraction of an inch in the spacing of the grille or register blades makes a big difference. Most supply and return grilles use 3/4" blade spacing, but evidence suggests
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Podcast: Improving Indoor Air Quality And Energy Efficiency In Schools
Schools in Focus: Greenheck School Ventilation Solutions Mike Wolf, Director of Industry & Regulatory Relations, and Tyler Mancl, Principal Application Engineer, talk about improving indoor air quality and energy efficiency in both new and retrofit school facility applications in Spaces4Learning’s S
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Louver Fundamentals: Understanding Louver Performance Criteria
The proper selection of louvers can be complex as many variables determine how they will perform. An understanding of basic louver performance criteria including free area, air volume, the beginning point of water penetration, and pressure drop can help guide your louver selection process. These per
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What are the Top Questions Engineers and Contractors Ask about Life-Safety Dampers?
Greenheck manufactures several hundred different damper products. Each offers variations to customize the product to specific applications. This large number of dampers and variations can create a little confusion. We receive many questions regarding life-safety damper products. The following are am
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Choosing the Right Air Distribution Partner for Data Centers
Choosing the right air distribution partner is essential to the success of data center projects. Power costs are a critical element of data center operations. With the constant need to keep servers cool, energy-efficient air movement must be an integral part of the core strategy to reduce overall po
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Changing the Narrative: From Indoor Air Quality to Indoor Air Safety
Before the pandemic, the majority of us took for granted that the air we breathe indoors is safe, just as we trust the water we drink is safe. Since the pandemic, we’ve learned that this is not always the case. Indoor Air Quality (IAQ) suddenly became a hot topic due to airborne viral transmission,
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Podcast: Energy Recovery: A Clear Solution for Improved IAQ in Existing Buildings
Energy Recovery: A Clear Solution for Improved IAQ in Existing Buildings Improving IAQ through mechanical ventilation presents many challenges, especially in existing, and often outdated, buildings. Listen as Tyler Mancl, P.E. of Greenheck talks with ACHR News about how Energy Recovery Ventilators (
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How Recent Changes in UL Standards Affect Fans
You may have been familiar with fans meeting UL Listing criteria that aligned under three UL Standards: Power Ventilators (UL 705), Power Ventilators for Smoke Control, and Power Ventilators for Restaurant Exhaust (UL 762). As of June 2021, UL made changes to these standards. Here’s a breakdown of w
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Data Center Energy Efficiency
According to the Department of Energy, data centers are one of the most energy-intensive building types, consuming 10 to 50 times the energy per floor space of a typical commercial office building. Collectively, these spaces account for approximately 2% of the total U.S. electricity use and will con
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EC Motor Fundamentals: Choosing the Right Motor—EC versus Belt Drive
New developments in EC motor technology and a growing list of benefits make EC motors attractive options in fan applications. But do these benefits make traditional belt drives obsolete? Let’s consider why customers select EC motors. All motors in fan equipment have two magnetic fields located in th
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The Importance of Handing - Air Terminal Units with Hot Water Coils
Air terminal units (ATUs) are essential to the air distribution system within commercial buildings. These units are responsible for delivering conditioned air from an air handler to the occupied space. ATUs are often equipped with reheat capabilities, either electric or hot water coils, for fine-tun
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Will the Energy Crisis Choke the Lifeblood Out of Data Centers?
What happens when you combine a fragile supply chain, a pandemic, and a wildly unexpected rapid economic rebound? The answer most often is short-term shortages. However, because the combination of events covered the entire world, the short term is lasting longer and causing more challenges. The ener
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Static Pressure, Throw, NC Level, and Other GRD Terms (Get to Know the Language of GRD)
Anyone who works in the HVAC industry knows it has its own language. Heating, ventilation and air conditioning (HVAC) language contain words and acronyms that, outside of the industry mean little to the average person. Subsets of the HVAC industry also use specialized terms to describe the function
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How Do Thermally Actuated Diffusers Conserve Energy in Commercial Buildings?
With HVAC systems and fans comprising over 35% of a building’s overall energy consumption, it’s imperative to incorporate energy-saving devices into the HVAC system design. Thermally Actuated Diffusers are useful devices to help conserve energy while creating more comfortable environments. What are
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What You Need to Know About Fire Ratings to Select the Correct Ceiling Radiation Damper
Selecting the correct ceiling radiation damper (firestop flap for our friends in Canada) requires a solid understanding of the testing and expected damper performance. This understanding guides the selection based on the protection needed and shows the importance of proper selection and installation
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What Are the Effects of Increasing Air Filtration Requirements on Fan Performance?
The Centers for Disease Control and Prevention have recently released guidance for improving air quality in buildings. In addition, the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has recently published ASHRAE Standard 241P, Control of Infectious Aerosols. Thes
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Understanding GRD Performance Data and Applications
Grilles, Registers, and Diffusers (GRDs) are designed to enable the efficient distribution of conditioned air within a given space. Each type of GRD product offers unique advantages and disadvantages, making them suitable for specific applications. When it comes to selecting GRD products, engineers
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Understanding High Wind and Seismic Approval Programs
When designing a building, design engineers must consider building resiliency and the types of natural events the building must withstand, including high wind and seismic events. In doing so, engineers should be aware of these two approval programs to aid in proper HVAC product selection: Miami-Dade
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Bubble-Tight Damper Performance Requirements
In today’s world of harmful chemicals, particulate matter, and noxious gases, bubble-tight dampers are more important than ever. A bubble-tight damper is an isolation damper designed to meet the performance requirements for zero leakage in critical leakage applications such as clean rooms, medical f
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Product Application Articles: Fan Sound
Product Application Articles: Fan Sound Sound is a critical consideration in the selection and application of fans. Despite this, fan sound remains one of the least understood topics in the air handling industry. This series of articles provides a better understanding and point of reference on how f
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Save Time and Money with True Round Life Safety Dampers
Building codes require life safety dampers to protect openings in walls, ceilings, floors, and/or partitions to prevent the spread of fire and/or smoke. The four types of life safety dampers are: Fire dampers Smoke dampers Combination fire smoke dampers Ceiling radiation dampers Round ductwork requi
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Addressing the Challenges of Operating Room Air Distribution
What differentiates critical environments from regular commercial construction is the necessity for very carefully controlled parameters for the quality of air. These parameters could include specific temperatures, humidity, pressure, velocity, particle counts, oxygen content, etc. In addition to th
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Achieve Long-Term Indoor Air Quality with These DOAS Fundamental Features
Investing in dedicated outdoor air systems (DOAS) for your building can ensure lasting indoor air quality (IAQ) for the life of the equipment. This assumes the DOAS units receive regular maintenance and that the DOAS equipment you purchase has the fundamental features designed to protect the unit. T
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How to Prevent Thermal Expansion and Contraction in HVAC Grilles, Registers, and Diffusers (GRD)
What if the occupants of a newly constructed building hear clicking or popping noises coming from the linear diffusers as the air conditioning is cooling the space? This issue can be frustrating, and it's important to understand why this situation can occur and how to prevent it from happening. In t