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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

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

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

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

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

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.

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

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

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

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).

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

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

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

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

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 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

Exploring the Benefits of Factory-Installed Ceiling Radiation Damper—Bath Exhaust Fan Combination

Bathroom exhaust fans are the most common way to properly ventilate and control moisture in residential bathrooms. Along with providing effective ventilation, bath fans with a ceiling radiation damper (CRD) are one of many components used to mitigate the spread of fire in many multi-family residenti

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

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

Leading Causes of Coil Failures Explained

Whether you own a large commercial building or are homeowner, you rely on heating, ventilation and air conditioning (HVAC) equipment to maintain the comfort level of your building. While this equipment is reliable, it inevitably fails. Then, if you find the culprit is a heating or cooling coil, you

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

Apply energy recovery to ventilation systems -- It's the Law!

Recovering energy sounds pretty good, right? But how many realize it is possible to recover energy from HVAC equipment that is ventilating a space? An energy recovery ventilator (ERV) consists of a supply fan, exhaust fan, and an energy recovery device. The ERV takes spent/stale conditioned air from

Aspirus Wausau Hospital Medical Surgical ICU Remodeling

The intensive care unit of a hospital requires a unique approach to ventilation to protect against contaminated air and pathogens, and still maintain patient comfort. Learn how Greenheck provided the right solution.

How to Survive a Retrofit Fan Installation in a Tight Space Location

Specifying and installing a [physically] large fan and its related housing in new construction frequently is quite easy. Exposed openings allow contractors to move it to the required location. However, that same installation to replace the existing equipment becomes far more difficult years after th

The Impact of Poor Indoor Air Quality in Multifamily Buildings

According to the United States Environmental Protection Agency (EPA), the concentration of some pollutants is often 2 to 5 times higher indoors than outdoors. The average American spends approximately 90% of their time indoors, so indoor air quality (IAQ) is extremely important to everyone’s health.

Improved Indoor Air Quality Raises Math/Science Scores

tbd Indoor air quality is a concern in schools across the country. It affects health and the ability to learn. Yuma High School in Yuma, Arizona solved its air quality challenge and eliminated another common issue. Read about Greenheck’s solution.

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

How to Adjust Air Performance in the Field without Sheave Changes or VFDs on Adjustable Blade Fans

Air performance adjustments in the field are sometimes necessary for a variety of reasons. For example, the system’s design looks perfect on paper, but the realities of installation can require airflow changes. Other factors include unaccounted or overestimated pressures, or building renovations. It

The Energy Savings Revolution in Make-up Air

A mechanical ventilation system provides fresh, outdoor air, as well as heating and cooling to the space in most commercial buildings. The system design varies depending on the application and uses various components such as air-handlers, make-up air units, and energy-recovery ventilators. Each prod

Improved Thermal Comfort and Aesthetics Make the Journey Enjoyable

TBD Central Wisconsin Airport in Mosinee, Wisconsin serves as a gateway for leisure and business travel. More than 280,000 people use the airport annually. Read about Greenheck’s solution to improve thermal comfort with using stylish fans that complements the airport’s newly remodeled concourse.

How to Design Laboratory Ventilation

The COVID-19 pandemic exposed the need for more information in fighting contagious diseases. Research on its causes, controls and cures spiked and continue still as the world attempts to protect against such viruses. Of course, laboratories work on a variety of projects in addition to contagious dis

Understanding the Differences Between Backdraft and Relief Dampers – Application and Selection

A successful HVAC system installation requires the correct components. Selecting most components is pretty simple. However, some can create problems. Backdraft and relief dampers, because of subtle differences and uses, can fall into that category. (Figure 1) Figure 1 Backdraft dampers, also known a

Protecting Ventilation Openings for Storm Shelters and Tornado Safe Rooms; FEMA Louver Requirements

Springtime in many parts of North America ushers in many changes. Snow melts, temperatures rise and the land starts producing again. These are welcome changes for many, but these changes do not come without some challenges. Spring is a volatile season and is often known for violent weather. Tornadoe

Understanding LODs and its Use in Building Information Modeling

Building information modeling (BIM) in its most simplistic form is all about data; specifically, the data contained in individual BIM elements. These elements – e.g., walls, windows, doors, fixtures, etc. – are the building blocks of any building information model, and can each contain information t

Does Your HVLS Fan Perform As Advertised?

High volume, low speed (HVLS) fans are large diameter ceiling fans that have gained significant popularity in the HVAC industry over the last several years. Like your ceiling fan at home, HVLS fans are a great way to circulate air and make the places that we live and work more comfortable. But, unli

Balancing Dampers - Automatic, Manual, Remote

Greenheck Balancing DampersFour Main Types of Balancing DampersRemote BalancingRBD-10RBD-15RBDR-50Manual BalancingMBD-10MBD-15MBDR-50Cable OperatedBTDR-50Sold as AccessoryAutomatic BalancingABDABD-FDABD-TABD-RBABD-Z1ABD-Z2PurposeRegulate flow of airLow-cost optionManual quadrant to set blade positio

QD Model Replacement Parts List: SP-B50, 70, 80, 90, 110, 150, 200 Replacement Part Numbers Size Motor 115V Power Pack SP-B50-QD 315037 873436 SP-B70-QD 315038 873437 SP-B80-QD 1039948 873438 SP-B90-QD 1039440 873439 SP-B110-QD 1039437 873440 SP-B150-QD 1039438 873441 SP-B200-QD 318872 873442 * Part

QD Model Replacement Parts List: SP-A50, 70, 90, 110, 125, 190 Access Door 878053 Plastic Wheel 473303 Standard Grille 484516 Shock Mount Ring (3) 370109 Motor See Chart Venturi Ring 653222 Connector Cover - 656734 Mounting Angle 656912 Duct See Chart Replacement Part Numbers Size Motor 115V Power P

Roof Mounted Fans and Gravity Ventilators

April 2024 Selection Guide for Fans  Catalog: Motor Starters (00.F&V.1021 R3 4-2024 SN) CENTRIFUGAL EXHAUST Catalog: G and GB (00.F&V.1000 R9 11-2019 IP) CENTRIFUGAL UPBLAST SIDEWALL EXHAUST Catalog: CUBE, CUE, CWB, CW and USGF (00.F&V.1003 R6 8-2019 IP) PROPELLER UPBLAST EXHAUST Catalog: RBU, RBUM

Technical Sheet: Northern Light

PRIMARY APPLICATIONS Education Facilities | Automotive Garages or Dealerships Police and Fire Stations | Retail Stores | Restaurants and Bars | Fitness Centers Office Spaces | Warehouses | Distribution Centers | Aviation Facilities Airports Greenheck DC-5 with Northern Light® technology combines the

Energy Recovery, Make-Up Air, Air Handlers, Fan Coils, Coils

 Indicates new or revised literature April 2024 Selection Guide for Energy Recovery, Make-Up Air, Air Handlers, Fan Coils, Coils ENERGY RECOVERY VENTILATORS PRE-CONDITIONERS Catalog: MiniVent, ERV, ERVe, MiniCore, ECV, and ERM (00.TAP.1041 R13 11-2022 SP) WITH COOLING HEATING Catalog: ERCH (00.TAP.

Fume Exhaust and Vektor Laboratory Exhaust

 Indicates new or revised literature April 2024 Selection Guide for Fans Catalog: AMCA and Greenheck (00.LAB.1000 R3 10-2011 RG) FUME EXHAUST PRODUCTS  Catalog: FumeJet™ Exhaust Systems (00.LAB.1019 R4 4-2022 SP) Catalog: GreenJet® Transfer Fans (00.LAB.1020 R1 4-2018 RG) VEKTOR® LABORATORY EXHAUS

SYNC and ASSURE Dual Hood (#435250 IOM)

® Dual Hood #435250 Models SYNC and ASSURE Assembly Instructions Please read these instructions carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could resu

Model AFL-601

Standard Construction Frame Heavy gauge extruded 6005-T5 aluminum, 6 in. (152 mm) x 0.188 in. (5 mm) nominal wall thickness Blades Front: Chevron design, heavy gauge extruded 6005-T5 aluminum, 0.188 in. (5 mm) nominal wall thickness, positioned 45º on approximately 1.625 in. (41 mm) centers Back: Ve

EACA-601

EACA-601 Combination Louver/Damper, Airfoil Blade Extruded Aluminum Standard Construction Frame Heavy gauge extruded 6063-T5 aluminum, 6.2 in. (156 mm) x 0.125 in. (3 mm) nominal wall thickness Blades Stationary blade: drainable design, heavy gauge extruded 6063-T5 aluminum, 0.081 in. (2mm) nominal

Blade Replacement Seal (HCD Series)

Blade Seal Replacement Instructions for HCD series These instructions address either replacement or initial installation. Silicone or EPDM Seal with Pressure Sensitive Adhesive • Open blades. Use scraper to remove any existing seal or adhesive. • Surface must be free from dust, dirt, oil and moistur

Sample email for you to send to your customersTo: From: Subject: Greenheck’s Virtual HVAC University Classes We are excited to inform you that Greenheck is offering virtual HVAC University classes. Several one-hour classes on different topics are presented monthly. The classes are presented live by