Duct Products

DuctSox Corp.: Oval-Shaped Fabric Duct

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


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Milwaukee Electric Tool Corp.: Ductwork Saw Blade

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The blade has been engineered to specifically address the frustrations encountered when installing ductwork takeoffs. 


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Knowledge is Power in HVAC Zoning

Education is Paving the Path to Zoning Prosperity
By Matt Bishop
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Zoning manufacturers are taking the initiative to make zoning an attractive option for contractors.


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Sheet Metal: More than Measure and Snip

Contractors Saving Time and Material with New Technology and Equipment
By Matt Bishop
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While the use of new technology has created a few issues for contractors, it’s a necessary adaptation sheet metal contractors must make.


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Zoning Success Requires Time and Financial Commitment

Contractors Believe Zoning Market is Ripe
By Matt Bishop
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If done correctly, adding zoning services can be a worthwhile investment for HVAC contractors.


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What Happened to Sick Building Syndrome?

SBS Has Faded from Headlines, But Is It Still a Problem?
By Joanna R. Turpin
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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
By David Richardson
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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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Balancing Home-Performance Demands with Ventilation Needs

Properly Ventilating Tight Homes a Priority for Home-Performance Contractors
By Jen Anesi
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As contractors seal up homes, they also need to consider proper ventilation, avoid common mistakes, and follow industry protocols to ensure occupant health and safety.


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Duct Dynasty: Do Your Tuneups Perform?

Properly Diagnose System Performance Using These Simple Measurements
By David Richardson
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Are your customers really getting better performance as a result of your performance agreement, or are you just insinuating they are? 


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Duct Dynasty: Measuring Static Pressure with a Magnehelic

Defining, Measuring, and Explaining Static Pressure with an Analog Manometer
By David Richardson
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The analog manometer, commonly referred to as a Magnehelic®, is a test instrument that has been around the HVAC industry for decades. 


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NEWSMakers: Mark Satterfield

Mark Satterfield, founder and CEO of Gentle Rain Marketing Inc. and author of “The One Week Marketing Plan” talks about his book and the importance of HVAC blogging. Posted on Sept. 19.

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2014 September 15

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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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