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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

Set Outside Airflow with Fan Law Two

Adjusting outdoor duct just requires a little math

David Richardson

July 2, 2020

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With two airside measurements and a little math, you can test and even adjust an outside air duct in a few minutes.

Add the Airside to Your Start-Ups

Don’t forget vital steps in haste to get job done

David Richardson

June 10, 2020

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Adding the airside to an equipment start-up doesn’t have to be hard.

Estimate Required Gas Heating Airflow in Four Steps

Contractors don’t need to rely on temperature rise to assume correct airflow

David Richardson

April 29, 2020

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Instead of relying on temperature rise to assume you have the right airflow, you can determine airflow requirements upfront.

Five Steps to Teaching Technicians Proper Static Pressure Testing

Static pressure helps measure an HVAC system's overall health

David Richardson

April 17, 2020

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A challenge that many companies face is getting technicians to consistently measure static pressure.

Creating Comfort in HVAC Requires An Awareness of Sound

Sound (or Lack of It) Is Comfort, Too

David Richardson

March 30, 2020

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Let’s review some basic principles and how you can use them to diagnose and solve sound-related HVAC issues.

Four Skills You Need to Optimize a Duct System

Add these abilities to your HVAC repertoire to exceed expectations

David Richardson

February 24, 2020

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This article is a summary of the skills you need to test, diagnose, and optimize an existing duct system.

Static Pressure Test a Building to Expand Your Diagnostics

These tips will improve your offerings to customers

David Richardson

January 13, 2020

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Let’s look at some helpful “static” pressure tests you can use on the building side of the duct system to diagnose common problems.

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.

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ACHRNEWS

2020 July 13

In this issue, we look at the trends impacting the Internet of Things market, and how contractors can improve system performance by upgrading motors and drives extends across all HVACR sectors.

Check back for additional content throughout the week.

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