NCI Article Library

High-Performance HVAC Resources

Breaking Down The Barriers

Member of the Month, Charlie’s Tropic Heating & Air, Charlie Marks.

Changing Fan Speed with an Adjustable Pulley

Changing Fan Speed with an Adjustable Pulley by Rob "Doc" Falke Adjustable pulleys are the most commonly used method for changing fan speed in commercial balancing. Let’s take a look at how adjustable pulleys work and learn how to adjust them. We’ll also learn how to...

Central Valley Building Solutions, Mariposa, CA

Terrell Estes, owner of Central Valley Building Solutions as June’s NCI Member of the month.

Central City Air Conditioning – Houston, TX

David Debien of Central City Air in Houston Texas receives honors as this month’s NCI’s Performance-Based Contractor of the month.

Carl Godwin, Northstar Heating & Air Conditioning, Newington, VA

Carl Godwin, President of Northstar Heating and Air Conditioning of Newington, Virginia is November’s NCI Contractor of the Month.

Carbon Monoxide- When It’s Hot, It’s Hot

Two questions that come up quite often in our seminars is "why take CO or Combustion readings in summer?," and "why take diagnostic training in the spring?" The thinking is "the heating season is over and by the time we use the information from class next fall, it...

Carbon Monoxide Goes to the Amusement Park

If you've been through an NCI CO seminar, you've been taught that when performing carbon monoxide analysis on equipment, CO should be stable and that rising CO is the most dangerous of all CO patterns. On the other hand there are isolated cases where CO is not stable...

Capture Fall IAQ Opportunities

Fall and spring seasons lack the extreme temperatures that usually keep our services in high demand. You're required to dig down deep and focus on new ways to generate business. Let's take a look at several approaches you can use in your marketing and daily...

Can Your Fan Really Afford That Filter?

The air filters we use in our heating and cooling systems are becoming more and more efficient every year. Filter marketing brochures compete to raise our awareness of the legions of dreaded unseen airborne enemies that threaten the peace and security of our homes....