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  • Greenheck Introduces BAER Belt Drive Sidewall Propeller Fan

    Greenheck’s new model BAER belt drive sidewall propeller fan is designed for expanded performance and improved efficiency in wall-mounted clean air applications. The BAER features cast aluminum airfoil blades and hubs, an AC induction motor, and an automatic belt-tensioning system that minimizes reg

  • Greenheck SQ Mixed Flow Square Inline Fan Recognized in Consulting-Specifying Engineer 2021 Product of the Year Awards

    Greenheck’s SQ mixed flow square inline fan received bronze level recognition as a Consulting-Specifying Engineer (CSE) 2021 Product of the Year. The award, voted on by the publication’s readers, was selected as one of the best new products of 2021 in the HVAC category. Model SQ will be highlighted

  • 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

  • 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

  • Greenheck Expands SQ Mixed Flow Inline Fan Line

    New smaller sizes, side discharge and insulation options now availableGreenheck’s line of SQ direct drive mixed flow inline fans offering a unique combination of high efficiency, low sound, and ease of installation in a square housing design continues to expand and add enhancements. With the additio

  • What goes into motor sizing?

    Motor sizing is more than a simple selection. Part one of this discussion explained fundamentals about horsepower (HP), torque and the fan laws. That information will aid in selecting a fan and determine the motor size. Fan Selection The fan criteria used for this post was for a direct drive fan wit

  • 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

  • Understanding FEI; the new Fan Energy Index

    As the saying goes “The only thing that is constant is change.” As we all know, change isn’t always good. However in this case, changing to the new Fan Energy Index (FEI), replacing the much criticized and flawed FEG (Fan Efficiency Grade) metric, is great! FEI replaces existing fan energy metrics i

  • 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

  • What you need to know about ASHRAE 90.1-2022, FEG, and FEI - Part I

    ASHRAE 90.1 revisions over time have reduced HVAC energy consumption in nonresidential buildings by 50% since the standard's introduction in 1975. Like software updates that incorporate improvements and bug fixes, so it is with standards and code revisions. Hence this is the reason to update your 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

  • Ventilation Fundamentals for Indoor Air Safety

    The National Education Association cites that nearly 57.5 million students and school employees enter the doors of our nation’s schools every day. According to estimates from the U.S. Environmental Protection Agency, half of these adults and children spend their school days breathing air polluted wi

  • 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

  • New XG-AFL Series Linear Diffusers from Greenheck

    Greenheck's XG-AFL Series of architectural high-capacity linear slot diffusers are designed for ceiling and sidewall installation in variable volume or constant volume air distribution systems. Available in single-section lengths up to 96 inches with one or two slots, versatile XG-AFL Series diffuse

  • 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

  • New KSQ Mixed Flow Untempered Roof Supply Fan From Greenheck

    Greenheck’s new KSQ mixed flow roof supply fan provides energy-efficient building supply or untempered make-up air in applications where heating and cooling are not required. Model KSQ is available in direct drive sizes 7 through 33 with performance up to 16,750 cfm and 2.75 in. wg in multiple confi

  • Fire Dampers 101 – Types, Testing, and Ratings

    Fire dampers play a very important role in protecting buildings and saving lives in the event of a fire. Building codes require fire dampers to maintain the fire-resistance ratings of walls, partitions, and floors when penetrated by air ducts and transfer openings. (Figure 1) Upon detection of eleva

  • 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

  • How to Adjust Floor-Mounted Isolators for Noise and Vibration-free Operation

    Your HVAC equipment is making unusual sounds and vibrating. Time to call maintenance, right? Well, yes, but maybe not for the reason you thought. It could be nothing more than a simple adjustment of fan isolators. Installing fan isolators on your HVAC equipment reduces the transmission of vibration

  • Greenheck Expands Tubular Inline Fan Line

    Greenheck has expanded its tubular inline fan product offering with the addition of the AX 200 Series tubular inline and upblast fans. Featuring medium-duty welded construction, a cast aluminum prop, and integral flanges for airtight duct connections, the direct drive AX 200 can be utilized in a wid

  • 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

  • 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’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 Modular Air Distribution Systems for Operating and Imaging Rooms

    Greenheck’s new modular air distribution systems accommodate the specialized medical, mechanical, and electrical considerations of operating and imaging rooms. Incorporating laminar diffuser arrays that simplify coordination during design and installation, these modular systems maximize diffuser cov

  • Greenheck Introduces AFL-601 Wind-Driven Rain FEMA Louver

    Greenheck’s line of FEMA 361 tornado louvers has expanded with the addition of model AFL-601, the first wind-driven rain FEMA louver to be listed for AMCA 550 High-Velocity Wind-Driven Rain. Constructed of extruded aluminum with a 6-inch frame depth, the unit’s dual module design incorporates front

  • 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

  • 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 Redesigns USF Centrifugal Utility Sets

    Greenheck has redesigned model USF single-width centrifugal utility sets in sizes 4 to 24 to incorporate more features and options. The USF now offers expanded direct drive selections with Vari-Green® motors up to 10 hp. Factory- mounted or ship-loose controls with VFDs are now available with belt o

  • 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 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

  • 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

  • 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 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 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 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 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 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 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 Introduces QEID Upblast Fan

    Now available in a roof-mounted configuration Greenheck’s QEID direct drive mixed flow fan is now available in a roof-mounted exhaust or upblast configuration ideal for discharging clean air or fume exhaust up and away from a building. The QEID Upblast’s mixed flow wheel offers higher efficiency ope

  • 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'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

  • 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

  • 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 Difference Between Energy Codes and Energy Regulations in the HVAC Industry

    Energy codes and regulations have a significant impact on the HVAC industry, however, confusion exists between the two, not only about where they apply but who they apply to and how they are enforced. Energy codes are generally a set of minimum requirements regarding energy efficiency that must be m

  • 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

  • Podcast: Understanding Fan Energy Index (FEI)

    Consulting Specifying Engineer: Understanding Fan Energy Index (FEI)In this Consulting Specifying Engineer podcast, Greenheck Principal Application Engineer, Tyler Mancl P.E., discusses how FEI is a true energy efficiency metric and explains how an understanding of FEI can help engineers with code c

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