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Home » Duct Dynasty

Articles Tagged with ''Duct Dynasty''

duct hood

Obstacles to Air Balancing Residential HVAC Systems

Consider using a residential pre-balancing checklist
David Richardson
David Richardson
May 15, 2017
Being accountable for proper airflow delivery causes a tech to examine every portion of an installation differently. Airflow is no longer assumed since test instruments now measure it. Let’s look at some of the most common obstacles to achieving a successful air balance on a residential HVAC system.
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duct takeoffs

The Scoop on Branch Duct Takeoffs

How to overcome the most common problems
David Richardson
David Richardson
April 24, 2017
A few months ago, I wrote a Duct Dynasty article on the ideal duct system. The most frequent comments and questions I received about this article were regarding branch takeoffs. So, I thought it would be fun to take a deeper look at branch duct takeoffs and how to overcome some of the most common problems associated with them.
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measuring duct pressure

Hunting for Airflow Restrictions with Static Pressure

You have to identify the location of the airflow problem
David Richardson
David Richardson
March 6, 2017
How good are you at hunting airflow restrictions? Do you have a game plan or is it just guesswork? Let’s take a look at some ways you can more effectively hunt down pesky airflow restrictions that could be plaguing your customers’ HVAC systems.
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indoor coil

Five Important Factors Influenced by Proper Airflow

Don't be an airflow phony
David Richardson
David Richardson
January 30, 2017
Just because our industry talks about proper airflow, it doesn't mean we’re doing much to address it. Airflow must be measured, plain and simple. Duct design and duct tightness won’t assure proper airflow.
Read More
static pressure

Technicians Should Address Static Pressure Readings like a Doctor

Much like blood pressure tests, static pressure tests offer definitive diagnoses
David Richardson
David Richardson
January 9, 2017
A simple method National Comfort Institute Inc. (NCI) teaches to explain static pressure is a blood pressure analogy.
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DUCT DESIGN:

Duct Dynasty: Designing the Ideal Duct System

An outline of how duct systems should be designed, fabricated, and assembled
David Richardson
David Richardson
November 28, 2016

Instead of focusing on the poor work our industry has been plagued with, we decided to dream about how an ideal duct system could be built.


Read More
HIDE AND SEEK:

Duct Dynasty: The Unintended Influences of Airflow on Combustion Safety

Altered airflow can influence the safe operation of fuel-fired equipment
David Richardson
David Richardson
November 7, 2016

Combustion safety can be sacrificed when fuel-fired appliances needing interior air for combustion are not carefully considered. Many appliances depend on a consistent supply of air from inside the building to operate safely. If this fact is ignored, the results can be deadly.


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David Richardson

Duct Dynasty: Increase Comfort with Performance-grade Registers and Grilles

Registers and grilles provide profitable opportunities for contractors
David Richardson
David Richardson
September 26, 2016

Registers and grilles provide opportunities for you to easily solve comfort issues and make upgrade accessory sales that may have been overlooked previously. By understanding the impact these accessories have on HVAC systems and the air distribution in rooms, you create a win-win for you and your customers.


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David Richardson

Duct Dynasty: Plotting Fan Airflow Using Manufacturer Fan Tables

David Richardson
David Richardson
August 29, 2016

If you’re in doubt about how a fan was rated, dig a little deeper into the footnotes and a lot of questions will be answered. As you become a student of fan-performance tables, you begin to see truths about airflow that enable you to solve issues beyond the skill level of your competition.


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Airflow will always take the path of least resistance.

Duct Dynasty: Five Rules to Know About Airflow

Airflow is one of the most misunderstood aspects of an HVAC system
David Richardson
David Richardson
July 18, 2016

To understand airflow, one must have a firm grasp of the rules driving its characteristics and behaviors. Many of the most complicated issues a tech encounters often tie to an airflow problem, so let's look at five airflow rules that can help anyone in the industry master the airside of the profession.


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