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David Richardson

David Richardson serves as a curriculum developer and trainer at the National Comfort Institute (NCI). NCI specializes in training focused on improving, measuring, and verifying HVAC and building performance. Contact him at 800-633-7058 or at davidr@ncihvac.com.

Articles

ARTICLES

A Guide to the Essentials of Building Pressure

Understand the entire building as a full ventilation system

David Richardson

December 16, 2019

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Many professionals are uncomfortable looking beyond the equipment and duct systems they install, which can affect their service to their customers.

Four Steps to Determine the Correct Mixed Air Temperature

How to predict what happens when outside air is added to the mix

David Richardson

November 18, 2019

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With a few measurements or design numbers and some quick math, you can estimate the influence outside air has on a system.

Three System-Sizing Superstitions The HVAC Industry Suffers From

“When you believe in things you don’t understand, then you suffer — superstition ain’t the way.” – Stevie Wonder

David Richardson

October 21, 2019

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Some beliefs often have hidden consequences that lead to long-standing issues and a lot of aggravation.

Skills to Add to Your HVAC Service Repertoire

Lions, Stools, and HVAC System Performance

David Richardson

October 7, 2019

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New skills and test instruments may look like a predator to employees if they don’t understand why they’re important.

An undersized, leaky, and poorly insulated duct system.

Five Reasons HVAC Systems Don’t Maintain Comfortable Conditions

Hidden reasons the system might not be working

David Richardson

September 9, 2019

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Let’s look at five hidden reasons HVAC systems might not keep up when the temperatures get hot, how to test for them, and potential repairs.

National Comfort Institute’s High-Performance Sales Excellence Award

Contractors Can Use Persuasion for HVAC Customers' Good

Positive persuasion can lead to profits and long-lasting relationships

David Richardson

August 12, 2019

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With the right conversation, customers get the HVAC system they expect, and you get a profitable sale that leads to a long-lasting relationship.

Lessons I Learned From Overcoming HVAC Adversity

Obstacles give us the opportunity to learn important lessons

David Richardson

June 17, 2019

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When faced with an obstacle, we decide to overcome it or quit and walk away. The consequences of those decisions mold us into the individuals we become.

10 Factors That Determine Duct System Performance

Here’s how to make sure duct systems are working at their highest potential

David Richardson

May 27, 2019

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Paying attention to these 10 factors will ensure that customers get the highest possible comfort and efficiency.

Larger-Tonnage Fans Diagram - The ACHR News

Watch Out for Larger-Tonnage Fans

David Richardson

April 29, 2019

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I made a comment about pairing larger-tonnage fans with smaller-tonnage outdoor units that has drawn a lot of interest.

Start Predicting Static Pressure Changes by Applying Fan Law 2

Air balancers have been using these formulas for years

David Richardson

March 18, 2019

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What if there were a quick and simple way to anticipate what would happen to static pressures if you increased or decreased airflow?

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ACHRNEWS

2019 December 16

Week 1: December 16
In this issue of The ACHR NEWS, we discuss indoor agriculture. Advances in high-end technology, coupled with the legalization of medical and/or recreational marijuana in more than half the country, have created an HVAC niche market that’s ripe for the picking.

Week 2: December 23
We also discuss tools and transportation, exploring how contractors get their equipment to the job site safely and on time.

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