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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

  • 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

  • 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

  • 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

  • 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

  • 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Buildings Improving IAQ through mechanical ventilation presents many challenges, especially in existing, and often outdated, buildings.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 (

  • 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,

  • 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

  • Energy Recovery: A Clear Solution for Improved IAQ In Existing Buildings

    As building occupancy continues to return to pre-pandemic levels in the wake of COVID-19, a heightened awareness exists to improve the quality and safety of the air we breathe. The most proven and longstanding method of doing this is by increasing the amount of ventilation, or fresh air, that we bri

  • 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

  • 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

  • Louver Fundamentals: A Breakdown of AMCA Louver Certifications

    The Air Movement and Control Association International or AMCA develops industry-related test standards for air movement and control products while independently certifying product performance to ensure reliable and accurate product performance. AMCA has several standards that pertain to louvers. AN

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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.

  • 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

  • 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

  • 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

  • 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

  • 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

  • Fans vs. Air Conditioners: Which Cools Better?

    Keeping an indoor space at a comfortable temperature is extraordinarily important. There are many options available to accomplish that task, and some are far better than others. The two basic methods are fans and air conditioners but figuring out exactly which works best for your particular situatio

  • 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

  • How to Cool a Building Without Air Conditioning

    When the weather warms up, an air conditioning unit can help keep large indoor spaces comfortable. But sometimes installing an air conditioning unit isn’t always possible or economical, so finding ways to cool the interior of a building without using AC is necessary. There are numerous benefits to k

  • 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.

  • 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

  • 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

  • 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

  • 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

  • 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).

  • 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

  • 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

  • Sign-Up for and Comment on Fresh Air Blog Posts

    Greenheck’s Fresh Air blog recently added new functionality to make your blog experience even better. Now, you can have notifications of new blog posts sent directly to your email inbox. We know your time is valuable and this notification can save you time. But that’s not all. Our intention has alwa

  • Redundant Lab Exhaust Systems: Are You Selecting the Best Option for Safety?

    Safety. Reliability. Ensure proper design and installation of systems to keep a laboratory open and operational. Laboratories must meet these requirements. However, labs have stringent ventilation needs when compared with other applications. Many labs work on critical research with potential for inf

  • How to Adjust Your HVAC System and Minimize the Spread of COVID-19

    Keeping people safe and protected from contagious viruses has reached unprecedented levels over the past few months. Leading organizations such as the Center for Disease Control (CDC) and medical professionals stress the need for common sense practices to slow the spread of COVID-19 and other contag

  • What You Need to Know About DOAS And the New Efficiency Ratings

    Dedicated outdoor air systems (DOAS) are gaining popularity in the commercial HVAC industry. These systems consist of ventilation units that dehumidify 100% outdoor air coupled with air handling units that heat or cool the space air. Figure 1 is a schematic of a typical DOAS. Figure 1: DOAS units pr

  • 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

  • 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

  • How Well do You know Your Industrial Isolation Dampers?

    Dampers can have many different functions within an HVAC or process application. One such function prevents or restricts the free flow of air, requiring the use of an isolation damper. Isolation dampers are generally two-position dampers and actuated to be fully open or fully closed. The degree of i

  • 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

  • How to Avoid Selecting the Wrong Ceiling Damper

    Ceiling dampers, also called ceiling radiation dampers (Figure 1), are crucial components of fire-rated floor/ceiling and roof/ceiling assemblies. However, confusion often occurs during the specifying and selection of these products. It is common to install the wrong damper, or worse, install each i

  • Understand the Energy Efficiency Codes Before Selecting an Inline Fan

    Are you in the market for an inline fan? Wonderful! Many energy-efficient options exist. But how do you know whether the inline fan you select offers the performance you want and complies with relevant codes and standards? Perhaps a better question is, do you know what codes and standards emphasize

  • Fresh Air for the HVAC Industry

    Welcome to the blog for air movement, control, and conditioning professionals that addresses your technical interests and needs. You will find valuable information on topics important to you and your work as it relates to heating, ventilation, and air conditioning (HVAC). No hype or hyperbole—just v

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