NCI Article Library

High-Performance HVAC Resources

Henry Sterling of Sterling’s Heating and Air Avon, OH

July 2003 Contractor of the Month

Hammond Services

2010 August Member of the Month

Getting a Diagnostic Test From a Service Call

Besides the valuable information the reading provides to help resolve the service call issue, it can be a prime lead-in to selling a complete system diagnostic and potential duct renovation work. To provide your customers with air conditioning systems that perform as...

Do You Know How External Filter Racks Impact Total External Static Pressure?

Do You Know How External Filter Racks Impact Total External Static Pressure? A few weeks ago I was asked a question about finding the proper location to obtain the entering static pressure reading on an upflow gas furnace using an external filter rack. This is one of...

Farris Electric, LLC

Chris Farris, Farris Electric, LLC in Durant, Oklahoma is NCI’s November Member of the Month.

Estimating Heating Equipment Size and Airflow

An essential part of diagnostic testing is communicating your findings to your customers. Your success will be in direct proportion to your ability to help them understand the impact of system performance on their comfort, pocketbook, health and safety. Back when...

Enhance Revenues With Commercial Air Conditioning Diagnostics

How would you like to generate additional revenue using Air Diagnostics with your existing commercial customers? If you currently have service agreements with commercial accounts, consider contacting property owners and managers to offer them a service that enhances...

Empire Heating & Air Conditioning, Atlanta, GA

Martin Hoover, owner of Empire Heating and Air Conditioning of Decatur, Georgia, NCI Member of the Month.

Duct Loss Test Methods – Which to Use When?

Duct Loss Test Methods - Which to Use When? By: Rob "Doc" Falke, NCI President NCI has a number of duct loss test methods that can help identify defects in duct systems. But when it's time to test in the field, you have to quickly determine what test will be most...

Duct Leakage in Mechanical Rooms and CO

Mechanical rooms housing heating equipment are required to maintain a neutral or slightly positive pressure to prevent combustion gasses from being pulled back down the flue into the room. The only appliances that this would not affect would be sealed combustion or...