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Duct Products

Duct Dynasty: Understanding the Coanda Effect

Considering the Traffic of Airflow Within a Duct System

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

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

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

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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2014 AHR Expo: IAQ + Ventilation

The NEWS was very busy at the AHR Expo in New York City, visiting as many booths as possible in search of new products. Below is a comprehensive list of all the IAQ and ventilation products we found on the show floor.


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Greenheck Fan Corp.: Insulated Control Dampers

Available with a thermally broken frame, the ICD Series of insulated control dampers consists of ultra low-leakage dampers with thermally broken insulated blades. 


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Chemical Systems Services Inc.: Duct Fittings, Dampers, and Blast Gates

A line of chlorinated polyvinyl chloride (CPVC) duct fittings, blast gates, and dampers for use in ventilation systems offers standard sizes from 6-24 inches; custom sizes or variations can be fabricated with quick turnaround.


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Aeroseal LLC: Duct-Sealing Equipment, Program

A new program lowers the barriers for HVAC businesses, duct-sealing professionals, and others looking to enter the home energy-efficiency market, the company said. 


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Duct Dynasty: Using Duct Surface for Leakage Testing?

Simple Testing Isn’t Always the Most Accurate

Are we using the most accurate metrics for determining duct leakage in a residential duct system? Would this be the best metric to use for quantifying duct leakage in residential duct systems?


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TruTech Tools Ltd.: Capture Hood

Lightweight and easy to handle, the Kanomax TABmaster™ capture hood Model 6710 allows users to take accurate supply and return airflow measurements. 


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2014 SMACNA Annual Convention

Views from the 2014 SMACNA Annual Convention in San Antonio.

Podcasts

NEWSMakers: Chris Mathis

Chris Mathis, president of Mathis Consulting Co. and vice chair of ASHRAE’s residential ad hoc committee, talks about ASHRAE’s exploration into the residential market. Posted on Oct. 17.

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ACHRNEWS

NEWS 10-20-14 cover

2014 October 20

Check out the weekly edition of The NEWS today!

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EFFICIENCY STANDARDS

DOE has denied AHRI’s petition for reconsideration of walk-in standards. Is it getting harder to reach consensus on efficiency standards?
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HVACR INDUSTRY STORE

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2015 National Plumbing & HVAC Estimator

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

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