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  • Product of the Year Voting Underway

    The KSQ Mixed Flow Roof Supply Fan is a nominee for the Consulting-Specifying Engineer (CSE) Product of the Year awards in the HVAC category—and we need your vote to win! Only qualified Consulting-Specifying Engineer subscribers are eligible to vote. Only one vote per qualified subscriber. If more t

  • Greenheck Adds Model DM-3 To Overhead Fan Line

    The model DM-3 is a small-diameter architectural overhead fan that boosts occupant comfort while enhancing the interior design of commercial and institutional building spaces. Featuring curved polymer airfoils designed to maximize airflow, improve efficiency, and optimize coverage area, the DM-3 is

  • Overhead Fan with Northern Light® Wins 2022 Commercial Comfort Product of the Year Award

    Greenheck’s Overhead Fan with Northern Light® Technology earned the Engineered Systems’ 2022 Commercial Comfort Product of the Year award in the IAQ & Ventilation category. Established to honor excellence in HVACR product design, the contest is conducted annually by Engineered Systems magazine which

  • Greenheck’s eCAPS® Bridge To Revit® Adds More Content And Functionality

    Greenheck’s eCAPS® Bridge to Revit® plug-in allows users to seamlessly select and schedule Greenheck HVAC equipment without leaving the Revit® environment. The latest eCAPS Bridge release includes access to additional Revit® content and more functionality. Dedicated outdoor air systems (DOAS) LOD 30

  • Greenheck Introduces XG-TH-500 Series Air Terminal Units

    Greenheck’s XG-TH-500 Series Air Terminal Units (ATU) are zone-level air distribution devices that regulate airflow for maximum occupant comfort in variable or constant volume applications. The single-duct XG-TH-500 features a galvanized steel casing mechanically sealed for low leakage construction

  • Greenheck Expands BAER Belt Drive Sidewall Propeller Fan Line

    Greenheck has expanded its BAER belt drive sidewall propeller fan line to include supply airflow configurations and expanded sizes. Model BAER is now available in supply and exhaust configurations with propeller diameters from 24 to 48 inches and performance capabilities from 300 to 54,000 cfm or up

  • New Fan Filter Diffusers from Greenheck

    Fan filter diffusers have been added to Greenheck’s growing line of healthcare, laboratory, and cleanroom (HLC) air distribution products. Fan filter diffusers are unidirectional diffusers with integrated EC motors and high-efficiency filters that provide ultra-clean air necessary in critical applic

  • New BTDR-50 Bowtie Damper From Greenheck

    Greenheck introduces model BTDR-50, a cable-operated radial blade balancing damper, also known as a bowtie damper, that is designed for easy airflow adjustment at an air outlet or plenum neck. The BTDR-50 is available in steel in 6, 8, 10, 12, and 15-inch diameters, with pressure capacity up to 1 in

  • New Modular Open Array From Greenheck

    Greenheck’s new Modular Open Array, model MOA, provides a turnkey retrofit package that delivers certified performance, communication, and controllability. The MOA configurable fan array features lightweight, easy-to-assemble components that ship to the job site knocked down for field installation.

  • Greenheck Introduces Directional Destratification Fan

    Greenheck’s extensive product line continues to grow with the addition of model DDF, a directional destratification fan that improves comfort and reduces energy costs by efficiently mixing air from floor to ceiling for uniform temperature distribution. The high-performance direct drive model DDF is

  • Greenheck Offers AER Configurable Condenser Fan

    Regulates temperature and provides ventilation for equipment in demanding applications Greenheck’s new AER direct drive configurable condenser fan can help regulate temperature and provide proper ventilation for your equipment, even in the most demanding applications where elevated water and tempera

  • Greenheck Introduces Healthcare, Laboratory and Cleanroom Air Distribution Products

    Greenheck’s new line of healthcare, laboratory, and cleanroom (HLC) air distribution products are designed, engineered, and tested to meet or exceed today’s critical environment standards for performance and energy efficiency. This product line includes Laminar Flow Diffusers, Radial Flow Diffusers,

  • Greenheck Launches Air Distribution Product Line

    New Product Line Allows for Single-Source HVAC System SpecificationGreenheck recently added air distribution products to its industry-leading product line making it even easier to specify a complete ventilation system from one supplier. Greenheck’s air distribution products include an extensive sele

  • Greenheck’s eCAPS® Bridge To Revit® Streamlines Product Selection

    Software Plug-In Saves Time in Creating Schedules Greenheck’s eCAPS® Bridge to Revit® plug-in provides access to the most complete catalog of HVAC product content in Greenheck’s eCAPS® online product selection program and makes it easy to select and schedule HVAC equipment without leaving the Revit®

  • Greenheck Supports Healthy Indoor Air In Schools

    Proper Ventilation Contributes to Improved Learning Environment A recently released White House Fact Sheet, Back to School 2022: Giving Every School the Tools to Prevent COVID-19 Spread and Stay Safely Open All Year Long, cites improving indoor air quality across America’s school buildings through e

  • Greenheck Announces Model RVC Rooftop Unit with Enthalpy Core

    New Model RVC Provides Low Maintenance Energy Recovery Greenheck’s new model RVC (Rooftop Ventilator with Energy Recovery Core) is the latest addition to its dedicated outdoor air systems line for high percentage and 100% outside air applications. Model RVC incorporates a total enthalpy core that pr

  • Greenheck Vektor®-H Lab Exhaust Fan Receives High Wind Certification

    Vektor-H Direct Drive Reduces Power and Maintenance Greenheck’s Vektor®-H direct drive laboratory exhaust fan has received Miami Dade NOA and Florida Product Approval for high wind certification. All Vektor-H series models are now hurricane and high wind certified for wind-borne debris, impact resis

  • Greenheck Celebrates 75 Years

    Company continues to excel through values established by its founders in 1947 Greenheck, the global leader in engineering and manufacturing air movement, control, conditioning, and distribution equipment, is celebrating its 75th anniversary. Founded by brothers Bob and Bernie Greenheck upon their re

  • Greenheck MultiSPEC™ Exhaust Fans Deliver Industry-Leading Performance

    Greenheck’s new MultiSPEC™ SP-LP ceiling exhaust fans provide high efficiency, powerful performance, and quiet operation in a low profile design. Powered by an electronically commutated motor (ECM) with constant CFM adaptive, variable speed, the MultiSPEC SP-LP is programmed to overcome static press

  • Greenheck Adds Two New Industrial Control Damper Models Designed to Control Airflow in Lab Exhaust Systems

    Greenheck has expanded its line of industrial control dampers with two new models specifically designed for lab exhaust systems. Models HCD-130LE and HCD-230LE are heavy-duty flanged-style frame industrial control dampers with fabricated airfoil blades designed to control airflow and provide shutoff

  • Greenheck Introduces ABD-Z2 Automatic Balancing Damper For Zone Register Terminals

    The ABD-Z2 is the latest addition to Greenheck’s line of automatic balancing dampers that provide precise airflow regulation for energy efficient indoor air quality. The ABD-Z2 is an integrated automatic balancing damper (ABD) with an adjustable set point controlled by an electric actuator (24V or 1

  • Greenheck Expands Mixed Flow Square Inline Fan Line

    Greenheck’s SQ mixed flow fan line featuring a unique combination of high efficiency, low sound, and ease of installation in a square housing design now includes a new outdoor option along with additional accessories and sizes. The SQ mixed flow fan can now be specified for ducted horizontal-mount o

  • Greenheck Introduces Residential Energy Recovery Ventilators For Multifamily Buildings

    Greenheck’s new high-performance residential energy recovery ventilators (ERVs) provide balanced ventilation that improves energy efficiency and ensures multifamily projects meet code and exceed indoor air quality expectations. Four models are available with a variety of options and accessories and

  • Greenheck Introduces High-Performance Ventilation Package For Healthier Indoor Air In Multifamily Buildings

    Greenheck, the global leader in air movement and provider of the most comprehensive selection of products for commercial HVAC systems, is expanding its product offering in multifamily construction. Greenheck’s new package of specification-grade exhaust ventilation fans and energy recovery ventilator

  • Greenheck's QEI Mixed Flow Fan Offers New Construction Options For Corrosive Or Flammable Environments

    Greenheck’s QEI mixed flow fans are now available with aluminum and spark resistance Type A material construction options. The expanded construction material offering combined with the QEI’s high efficiency mixed flow wheel makes it a great solution for challenging exhaust air applications. The alum

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

    As building occupancy has shifted and changed in many sectors since the COVID-19 pandemic, a heightened awareness remains 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 b

  • How to Specify HVAC Equipment to Attain LEED Certification

    Leadership in Energy and Environmental Design (LEED) is nearly 30 years old. The voluntary rating and certification program has had a profound impact on the direction of building design and construction. More than 93,000 projects and more than 19 billion square feet of space have qualified (register

  • Louver Requirements for the Hurricane-Prone Region

    Nearly 40 hurricanes and tropical storms have made landfall in the United States (U.S.) and its territories in the past 10 years. These storms pose an extreme risk for inhabitants of the areas affected. This risk includes injury and loss of life. Risk also extends to damage incurred to property—home

  • What You Need to Know about the Refrigerant Transition

    The transition to low global-warming refrigerants in the HVAC/R industry has been making headlines as the EPA deadline for most HVAC/R products to conform to the new refrigerant regulation is January 1, 2025. The following provides the basics on refrigerants and the impacts of the new regulation. Wh

  • The Basics of Fan Performance Tables, Fan Curves, System Resistance Curves, and Fan Laws

    Product Application Articles: The Basics of Fan Performance Tables, Fan Curves, System Resistance Curves, and Fan Laws Knowledge of fan performance tables, fan curves, system resistance curves, and fan laws is vital for fan selection. Many fan and HVAC product manufacturers offer computerized select

  • 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

  • Benefits of Heating Warehouses with Direct Gas-Fired Equipment

    Direct gas-fired equipment has been used for many years in industrial make-up air applications. Benefits including 92% thermal efficiency, low first cost, and compact footprints make direct gas-fired equipment the ideal choice. For these same reasons, direct gas-fired equipment is also a great fit f

  • 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

  • Benefits of Air Balancing and Commissioning for Make-Up Air Units

    Make-up air unit commissioning for new projects or pre-existing buildings is a quality assurance process to verify and document that HVAC systems function as specified and meet the operational needs of the building. The value of the initial commissioning is represented by operating savings, unit per

  • How to Select and Apply Balancing Dampers

    It is more important than ever for a building’s HVAC system to be adjusted and balanced correctly to achieve the required indoor air quality at the lowest possible operating costs. Pressure imbalances within an HVAC system can make it more difficult to maintain a given condition within a room (i.e.,

  • How to Prevent Condensation in HVAC Grilles, Registers, and Diffusers (GRD)

    Finishing a newly constructed building is a moment of great satisfaction and excitement for everybody involved. However, what if, after all the hard work and dedication, occupants begin to notice water dripping from the metal HVAC grilles when the air gets too cold? Or what if you hear clicking or p

  • 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

  • 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

  • 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

  • Addressing Two Trends that will Strain Efficiency in the Warehouse

    The COVID-19 pandemic will continue to shape our world for years to come. Two trends—growth in e-commerce and the need for improved indoor air quality (IAQ)—have increased in significance because of the pandemic. Interestingly, these trends place added pressure on warehouse operations to meet growin

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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 (

  • 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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