Articles Tagged with ''Duct Dynasty''

Duct Dynasty: A Closer Look at Combustion Air

Verifying installations is the key to combustion air performance

July 31, 2017

To understand the operation of combustion air openings, it’s a good idea to review some airflow basics. For airflow to move through a duct, there must be a pressure difference across it created by an external source. Traditional installations depend on natural forces to create this pressure difference.

Ducts in a Conditioned Space: To Insulate or Not?

Have HVAC contractors been ignoring a problem for decades?

David Richardson

June 26, 2017

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Is it possible there are negative effects caused by uninsulated ducts in conditioned spaces we may have overlooked for decades? Let’s look at some problems you might encounter due to this practice and how you can determine the impact on the performance of your systems.

Obstacles to Air Balancing Residential HVAC Systems

Consider using a residential pre-balancing checklist

David Richardson

May 15, 2017

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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.

The Scoop on Branch Duct Takeoffs

How to overcome the most common problems

David Richardson

April 24, 2017

No Comments

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.

Hunting for Airflow Restrictions with Static Pressure

You have to identify the location of the airflow problem

David Richardson

March 6, 2017

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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.

Five Important Factors Influenced by Proper Airflow

Don't be an airflow phony

David Richardson

January 30, 2017

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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.

Technicians Should Address Static Pressure Readings like a Doctor

Much like blood pressure tests, static pressure tests offer definitive diagnoses

David Richardson

January 9, 2017

One Comment

A simple method National Comfort Institute Inc. (NCI) teaches to explain static pressure is a blood pressure analogy.

Duct Dynasty: Designing the Ideal Duct System

An outline of how duct systems should be designed, fabricated, and assembled

David Richardson

November 28, 2016

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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.

Duct Dynasty: The Unintended Influences of Airflow on Combustion Safety

Altered airflow can influence the safe operation of fuel-fired equipment

David Richardson

November 7, 2016

No Comments

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.

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

Registers and grilles provide profitable opportunities for contractors

David Richardson

September 26, 2016

No Comments

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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Articles Tagged with ''Duct Dynasty''

Duct Dynasty: A Closer Look at Combustion Air

Ducts in a Conditioned Space: To Insulate or Not?

Obstacles to Air Balancing Residential HVAC Systems

The Scoop on Branch Duct Takeoffs

Hunting for Airflow Restrictions with Static Pressure

Five Important Factors Influenced by Proper Airflow

Technicians Should Address Static Pressure Readings like a Doctor

Duct Dynasty: Designing the Ideal Duct System

Duct Dynasty: The Unintended Influences of Airflow on Combustion Safety

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

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