Ventilation

Duct Dynasty: The Building Side of the Duct System

Considering Airflow Outside of Sheet Metal
June 9, 2014

If you’re reading this article in a building that has a forced-air HVAC system in it, you’re sitting inside the duct system right now.


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Air Curtains Keep Milk Cold — Not Frosty

Air Curtains Help Neutralize Subfreezing Wisconsin Winters
June 9, 2014

Dairy farmer Hans Griesen was losing product and productivity due to freezing wintertime temperatures at his Madison, Wisconsin, milking parlor until he installed two air curtains.


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Greenheck Fan Corp.: Backward-Inclined Utility Fan

June 2, 2014

Powered by a Vari-Green® motor, Model SWD achieves the performance of the Model SWB belt-drive centrifugal utility fan, including higher operating efficiencies and higher-pressure capabilities. 


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NEWS Hosts Free Fan Engineering Webinar

Lau Industries' Michael Brendel to Host Online Event
June 2, 2014

The webinar offers HVAC equipment engineers a basic review of fan engineering from an energy perspective. 


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DuctSox Corp.: Oval-Shaped Fabric Duct

May 26, 2014

OvalSox™ fabric duct is designed for low-clearance HVAC ventilation in industrial and commercial building applications. 


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Knowledge is Power in HVAC Zoning

Education is Paving the Path to Zoning Prosperity
May 19, 2014

Zoning manufacturers are taking the initiative to make zoning an attractive option for contractors.


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Zoning Success Requires Time and Financial Commitment

Contractors Believe Zoning Market is Ripe
May 19, 2014

If done correctly, adding zoning services can be a worthwhile investment for HVAC contractors.


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Panasonic Eco Products Div.: Ventilation Fans

May 19, 2014

The WhisperGreen Select™ models are modular all-in-one fan and fan/LED light combination ventilation fans. 


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What Happened to Sick Building Syndrome?

SBS Has Faded from Headlines, But Is It Still a Problem?
May 12, 2014

SBS is far from being eradicated and is still a concern that many HVAC professionals grapple with every day.


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Duct Dynasty: Understanding the Coanda Effect

Considering the Traffic of Airflow Within a Duct System
May 12, 2014

The Coanda Effect is named in honor of Henri Coanda, a Romanian aerodynamics pioneer and aircraft inventor. This phenomenon is sometimes referred to as the surface effect.


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2014 ACI Home Performance Conference

The 2014 ACI National Home Performance Conference & Trade Show was held in Detroit.

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NEWSMakers: Michael Willburn

Michael Willburn, president, Infloor Heating Systems, joins the program to discuss his company, radiant heating, industry trends, and whether contractors are becoming more interested in radiant heating. Posted on July 11.

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2014 July 21

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R-22 PHASEOUT POLL

Some in the industry are calling for the EPA to halt production of R-22 as of 2015. What do you think?
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2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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